TW201819531A - Slab track repairing materials, cured products, slab track repairing methods, slab tracks and resin compositions - Google Patents

Abstract

The invention provides a resin composition and a slab track repairing material which can give cured products having a high Young's modulus, a cured product thereof, a method for repairing slab tracks using the repairing material, and a slab track which has the cured product. The slab track repairing material includes a polyfunctional polyol (A) having a functionality of more than 2, a difunctional polyol (B) and an isocyanate compound (C).

Description

 Repair material for hard track, hardened body, repair method of layout track, layout track and resin composition  

The present invention relates to a repair material for a layout track, a hardened body thereof, a repair method of a plate track using the repair material, a plate track, and a resin composition.

In the past, the following rails have been widely used: as a roadbed (such as "subgrade side structure"), an elevated structure, an underground structure, or a bridge constructed by concrete or the like is used as a roadbed (hereinafter, these structures are also referred to as "subgrade side structures"). A filling layer composed of a cement asphalt mortar (hereinafter also referred to as "CA mortar") obtained by mixing cement, asphalt emulsion and fine aggregate, and a track type of concrete or the like is fixed on the roadbed side structure, and the track plate is locked A track made of tight track rails.

The layout track 10 is specifically provided with a track plate 24 on the surface of the roadbed side structure 20 via the filling layer 22, and a pair of track rails are disposed on the upper surface of the track plate 24 as shown in FIG. 30, 30. Further, the track plate 24 is provided with notch portions 26 and 26 at both end portions, and the projection portion 28 provided at a predetermined interval on the road base side structure 20 is aligned with the notch portion 26 of the track plate 24.

The filling layer 22 is, for example, previously lifted the track plate 24 to a predetermined position on the roadbed side structure 20, and is filled in the space formed between the track plate 24 and the roadbed side structure 20 through the filling of the track plate 24 in advance. A CA mortar as a filler is filled with a hole (not shown) or the like, and is formed by hardening.

Further, the filling layer 22 may be lifted to a predetermined position on the roadbed side structure 20 in advance, and a CA mortar may be preliminarily injected in a space formed between the rail plate 24 and the roadbed side structure 20. The bag body such as non-woven fabric is formed by curing in a gap.

The filling layer 22 composed of such a CA mortar may, for example, be stretched by the temperature change of the rail rail 30, or may be subjected to a force applied by the vehicle traveling on the rail rail 30, and may be infiltrated into the filling layer 22. The alkaline component is eluted by water or the like, and the packed bed 22 is gradually hollowed out (porous) and gradually deteriorates. In particular, the water infiltrated into the packed bed 22 causes deterioration of the packed bed 22 due to repeated freezing and dissolution, and the influence is remarkable in cold regions.

When the filling layer 22 is deteriorated, defects such as cracking, peeling, and falling off occur from the exposed portion of the deteriorated filling layer 22. Therefore, when the deteriorated portion is confirmed, it is required to repair as early as possible.

As a method of repairing the layout track, it has been proposed to remove the deteriorated portion of the filling layer, and then arrange the mold frame so as to surround the removal portion. After the mold frame is filled with the repair material and hardened, the mold frame is removed to repair the filling. The method of the layer (hereinafter also referred to as "the frame repair method") (Non-Patent Document 1). In the repairing material used at this time, a resin repairing material such as a vinyl ester resin or a polyurethane resin can be used from the viewpoints of workability, hardenability, and durability.

Further, as a repairing material for a filling layer of a plate track, a polyester acrylate which is a radical curable property is used as a substrate, and a small piece of a polymer elastic material and an inorganic aggregate are mixed, and a hardener is added thereto. Repair material (Patent Document 1).

 [Previous Technical Literature]    [Patent Literature]  

[Patent Document 1] Japanese Patent Laid-Open No. Hei 11-256504

 [Non-patent literature]  

[Non-patent document 1] "Handbook for repairing each part of the slab track", the Railway Research Institute of the Corporation, May 1, 2010, the second edition, p.21-35

However, in the hardened body of the repairing material used in the aforementioned documents, the Young's modulus is lower than that of the CA mortar, so that the track cannot be sufficiently supported by the repaired portion when the train travels (for example, relative to the CA mortar) The modulus is about 2000 N/mm ² , and the cured body composed of the conventional vinyl ester resin or polyurethane resin has a Young's modulus of about 15 to 70 N/mm ² ). In the repairing of the general layout track, the deterioration width of the filling layer (the length of the end portion of the filling layer which is removed at the time of repairing) is short, so that the repairing portion has less mechanical influence on the track plate, and can be used by the conventional Yang. Repair of repair materials with a small modulus. However, according to recent studies, in the extremely cold regions such as Hokkaido, the deterioration of the packed bed is severe due to freezing damage, and the deterioration width is 100 mm or more, and sometimes 200 mm or more. Therefore, when the filler layer is repaired by using a conventional repairing material, The repaired portion cannot fully support the track plate, and the dynamic displacement of the track plate generated when the train travels obviously has a problem of a bad feeling such as a ride feeling. Therefore, it is highly desirable to develop a repair material that can form a hardened body having a high Young's modulus equivalent to CA mortar.

The present invention has been made in view of the above problems, and an object thereof is to provide a repairing material for a plate track capable of forming a hardened body, and a repairing method for a plate track using the same, wherein the hardening system has a high Young's modulus, and Can be used for patching of the track.

The inventors of the present invention have studied intensively to solve the above problems. As a result, it has been found that the above problems can be solved by a specific repairing material, and the present invention has been completed. Aspects of the invention are as follows, for example.

[1] A patch material for repairing a track comprising a polyfunctional polyol (A) having more than two functions, a bifunctional polyol (B), and an isocyanate compound (C).

[2] The repairing material according to [1], wherein the polyfunctional polyol (A) is a tetrafunctional or higher polyhydric alcohol.

[3] The repairing material according to [1] or [2], wherein the content of the polyfunctional polyol (A) is 150 parts by mass or more based on 100 parts by mass of the bifunctional polyol (B).

[4] The repairing material according to any one of [1] to [3], further comprising an inorganic pigment (D).

[5] The repairing material according to [4], wherein the content of the inorganic pigment (D) is 450 parts by mass or less based on 100 parts by mass of the bifunctional polyol (B).

[6] The repairing material according to any one of [1] to [5], which satisfies the following conditions; the condition: the Young's modulus of the hardened body of the repairing material of the above-mentioned rail is 700 to 2,700 N /mm ² .

[7] The repairing material according to any one of [1] to [6] wherein the polyfunctional polyol (A) is a bifunctional oil-based polyhydric alcohol.

[8] The repairing material according to any one of [1] to [7] wherein the bifunctional polyol (B) is a bifunctional castor oil-based polyol.

[9] The repairing material according to any one of [4] to [8] wherein the inorganic pigment (D) comprises cerium oxide and/or calcium carbonate.

[10] The repairing material according to any one of [1] to [9] wherein the isocyanate compound (C) is an aromatic polyisocyanate and/or an aromatic aliphatic polyisocyanate.

[11] A hardened body, which is a hardened body of the repairing material according to any one of [1] to [10].

[12] A method of repairing a layout track, comprising: filling a repairing material according to any one of [1] to [10] in a repairing layer of a filling layer between a track plate and a roadbed side structure and It hardens to form a hardened body.

[13] A layout rail in which a roadbed side structure and a track plate are disposed via a filling layer, and a track rail is disposed on the track plate, wherein at least a part of the filling layer is [1] The hardened body of the repair material according to any one of [10].

[14] A resin composition containing a polyfunctional polyol (A) having more than two functions, a bifunctional polyol (B), and an isocyanate compound (C).

According to the present invention, a hardened body having a high Young's modulus can be formed. When such a hardened body is used as a filling layer between the track plate and the roadbed side structure, the track plate can be sufficiently supported, so that it is possible to suppress the dynamic displacement of the track plate generated when the train travels, and to provide a comfortable ride. The typographic track of the seat.

Moreover, since the repairing material of the present invention has sufficient fluidity even if the plasticating agent is not formulated, the plasticizer can be eliminated or reduced to the environment, and the repairing material as a plate track can be suitably used, and is particularly suitable. The use of the material flowing between the track plate and the roadbed side structure makes it easy to repair the plate track, and since it is hardened in a state of being in close contact with the filling layer composed of the existing CA mortar, it may not be A hardened body of the repair material is formed by a gap between the track plate and the roadbed side structure. If the packed bed has voids, the water penetrating into the packed bed will remain and is susceptible to freezing damage, so that the voids in the repaired filled layer are less preferred. Since the filling layer of the plate rail repaired by the repairing material of the present invention can reduce the voids, it is less likely to be affected by the freezing damage, and is excellent in durability.

10‧‧‧ format track

20‧‧‧Subgrade side structures

22‧‧‧ fill layer

24‧‧‧ Track Edition

26‧‧‧Gap section

28‧‧‧Protruding

30‧‧‧ Track rails

Fig. 1 is a perspective view showing an example of a structure of a layout track in a partial cross section.

Repair material and resin composition of ≪ 轨道 track

The patch material of the present invention contains more than two functional polyfunctional polyols (A), bifunctional polyols (B), and isocyanate compounds (C), and the resin composition of the present invention contains more than two functional groups. A functional polyol (A), a bifunctional polyol (B), and an isocyanate compound (C). Hereinafter, the repairing material and the resin composition are also collectively referred to as "this material".

The present material exerts the aforementioned effects by containing such compounds, and in particular, even if a hard body having a high Young's modulus can be formed, it has sufficient fluidity, so that the plasticizer can be eliminated or reduced to the environment, and It is suitable to use a repair material as a plate track, and it is particularly suitable as a material which flows between the track plate and the roadbed side structure.

Further, conventionally, there has been no repair material for a plate track having a high fluidity and capable of forming a hardened body having a high Young's modulus. For example, in order to form a hardened body having a high Young's modulus, it is considered that a material having a large amount of pigment components such as inorganic pigment (D) to be described later is used, but the fluidity of the material is poor, so that it flows into the track plate and the roadbed side structure. The work between them becomes difficult, or since the material does not flow sufficiently, there is a gap in the filled layer after the repair. Therefore, the use of such a material as a repair material for a plate track is not preferable.

On the other hand, the present material can be formed by using a bifunctional polyfunctional polyol (A) and a bifunctional polyol (B) which does not bleed out as a general plasticizer as a polyol component. A hardened body of Young's modulus, and has sufficient fluidity.

This material may be a one-component type composition, but it is preferable to use a two-component type composition from the viewpoint of excellent storage stability. In this case, the above-mentioned polyol (A) and (B) are usually blended in a main component, and the isocyanate compound (C) is blended in a curing agent, and the main component and the curing agent are mixed to prepare the material.

<More than 2-functional polyfunctional polyol (A)>

The bifunctional polyfunctional polyol (A) (hereinafter also referred to as "component (A)") is not particularly limited, but from the viewpoint of obtaining a hardened body having a higher Young's modulus, etc., A polyfunctional polyol having 2.7 or more functional groups is preferable, and a polyfunctional polyhydric alcohol having 3 or more functional groups is more preferable, and in particular, from the viewpoint that a hardened body having a Young's modulus equivalent to that of CA mortar can be easily obtained, More preferably, a polyfunctional polyol having 4 or more functional groups is more preferred, and a polyfunctional polyol having 5 or more functional groups is particularly preferred.

In the present specification, the number of functional groups refers to the number of average hydroxyl groups present in one molecule. For example, a polyfunctional polyol having more than two functions means a polyol having more than two hydroxyl groups in one molecule.

The component (A) may be used alone or in combination of two or more.

Specifically, the component (A) may be a castor oil-based polyol, a polyether-based polyol, or a polyester-based polyol. Here, the castor oil-based polyol also includes a castor oil-based polyether polyol having a polyether structure, a castor oil-based polyester polyol having a polyester structure, and a castor oil-based polyester having a polyether structure and a polyester structure. Polyether polyols and the like.

The component (A) is a castor oil-based polyol or a polymer, from the viewpoint of obtaining a material having excellent low-temperature hardenability, a high curing rate, and a reduced environmental load, and a hardened body having a higher Young's modulus. An ether polyol is preferred, and a castor oil-based polyester polyol or a castor oil-based polyester polyether polyol is more preferable.

Castor oil is a pale yellow-viscous, non-drying oil obtained from the seeds of the plant of the Ricanus communis of the Euphorbiaceae family. About 90% of the fatty acids in castor oil are ricinoleic acid, which has a hydroxyl group, a double bond and an ester bond in one molecule, and thus has unique characteristics different from other vegetable oils and fats. Advantages thereof include excellent stability, flexibility, electrical insulation, water resistance, and impact resistance. By using this castor oil-based polyol having such a special castor oil as a starting material, it is excellent in resistance to mechanical stress such as friction and punching, and excellent in heat resistance, hydrolysis resistance, acid resistance, and the like. Hardened body.

Further, by using a castor oil-based polyol, a hardened body which is less likely to cause thermal deformation and hardening shrinkage can be formed.

The castor oil-based polyol is not particularly limited, and examples thereof include at least one of castor oil and castor oil alkylene oxide adduct, and among alcohols, polyester polyols, and polyether polyols. At least one transesterification; castor oil fatty acid (a fatty acid obtained from castor oil, generally a mixture of ricinoleic acid and oleic acid), and an alcohol, a polyester polyol, and a polyether polyol At least one ester compound; a partial dehydrated or partially thiol compound of a glycol type castor oil; a hydride of the foregoing transesterified product, the aforementioned ester compound, and each of the foregoing partially dehydrated or partially sulfhydryl compound; After polymerization, a compound obtained by reacting the obtained transesterified reaction product of the castor oil with caprolactone after obtaining the castor oil is obtained.

From the above, component (A) can be used by selecting a compound having more than two functions.

The polyether polyol may, for example, be at least three or more of a polyhydric alcohol compound such as glycerin, trimethylolpropane, neopentyl alcohol, sorbitol or sucrose, or an aliphatic amine compound such as diethylenetriamine. The active hydrogen group-containing compound is used as a starting material, and a polyhydric alcohol obtained by adding an alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide or polyoxytetramethylene oxide is added thereto.

The polyester-based polyol may, for example, be an alcohol having 3 or more members such as glycerin, diglycerin, trimethylolpropane, pentaerythritol, sorbitol or sucrose, and glutaric acid, succinic acid, oxalic acid, or the like. A polyester-based polyol obtained by condensing a diproton acid such as phthalic acid, isophthalic acid, adipic acid, sebacic acid or sebacic acid.

The hydroxyl value of the component (A) is not particularly limited, but the lower limit is preferable from the viewpoint of obtaining a material having a predetermined viscosity and being excellent in the filling property, the ease of repair of the plate track, and the low-temperature hardenability. It is 40 mgKOH/g, more preferably 140 mgKOH/g, and the upper limit is preferably 500 mgKOH/g, more preferably 400 mgKOH/g.

The viscosity of the component (A) is not particularly limited, but an Ubbelohde viscometer is used in accordance with JIS Z8803:2011 from the viewpoint of obtaining a material which is more excellent in the ease of repairing the filling property and the layout track. The viscosity measured at 25 ° C is preferably from 200 to 10,000 mPa ‧ s, more preferably from 500 to 6,500 mPa ‧ , and particularly preferably from 500 to 2,000 mPa ‧ s.

The number-average molecular weight (Mn) of the component (A) is not particularly limited, but from the viewpoint of obtaining a material having a predetermined viscosity and being excellent in the filling property, the ease of repair of the plate track, and the low-temperature hardenability, It is preferably from 400 to 3,000, more preferably from 700 to 1,100.

The component (A) can be synthesized by a conventionally known method, and a commercially available product can also be used. Commercial products include, for example, URIC H-30, URIC H-52, URIC H-57, URIC H-73X, URIC H-81, URIC H-102, URIC H-420, URIC H-854, URIC H-870 , URIC H-1824, URIC H-368, Polycastor # 10, Polycastor # 30, URIC Y-406, URIC AC-009, URIC F-15, URIC F-25, URIC F-40, URIC F-60 (above , Ito Oil Co., Ltd., TLM, LAV, LM-R, ELA-DR, HS 3P-255, HS PPE-12H, HS 6G-160, HS CM-025P, HS CM-075P, HS 3G-100M , HS 3G-500B, HS 2T-1208 (above, manufactured by Toyo Corporation), EXCENOL 410NE (Asahi Glass Co., Ltd.).

The material (solid content) is obtained from the point of obtaining a material having a predetermined viscosity and being more excellent in the ease of repairing the filling property and the layout track, and a hard body having a high Young's modulus can be easily obtained. The content of the component (A) is preferably 20 to 40% by mass, and particularly preferably 27 to 34% by mass from the viewpoint that a hardened body having a Young's modulus equivalent to that of the CA mortar can be easily obtained. .

In addition, from the viewpoint of obtaining a material having a predetermined viscosity and being more excellent in the ease of repairing the filling property and the pattern track, and obtaining a hardened body having a high Young's modulus, etc., it is relative to the bifunctional polyol. (B) 100 parts by mass, and the content of the component (A) is preferably 150 parts by mass or more, and more preferably, from the viewpoint that a hardened body having a Young's modulus equivalent to that of the CA mortar can be easily obtained. 170 parts by mass or more, more preferably 190 parts by mass or more, and particularly preferably 230 parts by mass or more. When the content of the component (A) is less than the above range, the Young's modulus of the obtained hardened body becomes low. In addition, the content of the component (A) is preferably 550 parts by mass or less, more preferably 450 parts by mass or less based on 100 parts by mass of the component (B).

<2-functional polyol (B)>

The bifunctional polyol (B) (hereinafter also referred to as "component (B)") is not particularly limited as long as it is a polyol having two hydroxyl groups in one molecule.

Ingredient (B) adjusts the viscosity of the material as a reactive diluent to improve the workability (fillability) when repairing the track. Further, since the component (B) is cured by the reaction with the isocyanate compound (C), it is preferably different from the conventional plasticizer and does not bleed out from the cured body.

The component (B) may be used alone or in combination of two or more.

Specifically, the component (B) may be a castor oil-based polyol, a polyether-based polyol, or a polyester-based polyol. Here, the castor oil-based polyol also includes a castor oil-based polyether polyol having a polyether structure, a castor oil-based polyester polyol having a polyester structure, and a castor oil-based polycondensate having a polyether structure and a polyester structure. Ester polyether polyols and the like.

The component (B) is preferably a castor oil-based polyol from the viewpoint of obtaining a low-temperature hardenability, a high curing rate, and a reduced environmental load, and obtaining a hardened body having a higher Young's modulus. It is more preferable to use a castor oil-based polyester polyol or a castor oil-based polyester polyether polyol.

Specific examples of the castor oil-based polyol include, for example, the same polyol as the castor oil-based polyol described in the above section (A). Component (B) can be used by selecting a bifunctional compound from among these.

The polyether-based polyol may, for example, be a starting material using a divalent alcohol such as propylene glycol or ethylene glycol, and then add ethylene oxide, propylene oxide, butylene oxide or polyoxytetrazol. A polyol obtained by using an alkylene oxide or the like such as an alkyl oxide.

Examples of the polyester-based polyol include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, and neopentyl Alcohol, 1,5-pentanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 2-methyl-1,3-propanediol, 2,2-diethyl- a diol of 1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, with glutaric acid, succinic acid, oxalic acid, terephthalic acid, isophthalic acid, hexan A polyester-based polyol obtained by condensing a diproton acid such as an acid, azelaic acid or sebacic acid.

The hydroxyl value of the component (B) is not particularly limited, but from the viewpoint of obtaining a material having a predetermined viscosity and being more excellent in the filling property and the ease of repairing the plate track, it is preferably 20 to 1,000 mgKOH/ g, more preferably 120 to 200 mgKOH/g.

The viscosity of the component (B) is not particularly limited, but a Ubbelohs viscometer is used in accordance with JIS Z8803:2011 from the viewpoint of obtaining a material having a predetermined viscosity and being more excellent in the ease of repairing the filling property and the layout track. The viscosity measured at 25 ° C is preferably from 150 to 5,000 mPa ‧ s, more preferably from 150 to 3,000 mPa ‧ s, and particularly preferably from 150 to 1000 mPa ‧ s.

The Mn of the component (B) is not particularly limited, but it is preferably from 400 to 10,000, more preferably from the viewpoint of obtaining a material having a predetermined viscosity and being more excellent in the filling property and the ease of repairing the plate track. 500 to 3,000, especially for 500 to 1,200.

The bifunctional polyol (B) can be synthesized by a conventionally known method, and a commercially available product can also be used. Commercial products include, for example, "URIC Y-403", "URIC Y-202", "URIC Y-332", "URIC H-62" (Ito Oil Co., Ltd.), "HS 2G-120", " HS 2G-160R", "HS 2G-270B", "HS 2B-5500", "HS KA-001" (豊国制油(股)), etc.

The material (solid content) is obtained from the point of obtaining a material having a predetermined viscosity and being more excellent in the ease of repairing the filling property and the layout track, and a hard body having a high Young's modulus can be easily obtained. The content of the component (B) is preferably from 5 to 25% by mass, and particularly preferably from 8 to 18% by mass, from the viewpoint that a hardened body having a Young's modulus equivalent to that of the CA mortar can be easily obtained. .

<isocyanate compound (C)>

The isocyanate compound (C) (hereinafter also referred to as "component (C)") is not particularly limited as long as it has an isocyanate group and can be cured by reacting with the above components (A) and (B).

The component (C) may be used alone or in combination of two or more.

The component (C) may, for example, be diphenylmethane diisocyanate (hereinafter also referred to simply as "MDI". [Example: 2, 2'-MDI, 2, 4'-MDI, 4, 4'-MDI]) , polymeric MDI (crude MDI), toluene diisocyanate (hereinafter also referred to as "TDI" (eg, 2,4-TDI, 2,6-TDI)), aromatic polyisocyanate such as naphthalene diisocyanate Aliphatic polyisocyanates such as aromatic aliphatic polyisocyanates such as xylene diisocyanate, hexamethylene diisocyanate and isophorone diisocyanate; carbodiimide modified and polyisocyanate compounds of the above polyisocyanate A polyurethane prepolymer obtained by reacting with a low molecular weight polyol or the like.

Among them, the storage stability is excellent, the workability when mixing with the main component is moderately adjusted, the workability at the time of patch rail repair is excellent, and the low-temperature hardenability is also excellent, and since it is inexpensive and economical, An aromatic polyisocyanate or an aromatic aliphatic polyisocyanate is preferred, and diphenylmethane diisocyanate and a polymeric MDI are more preferred.

Commercial products of the component (C) include, for example, "Lupranate M20S" (BASF INOAC Polyurethanes, crude MDI), "Millionate MR-200" (TOSOH (manufactured by the company), crude MDI), "Cosmonate T-80" (Mitsui Chemical Co., Ltd., TDI), "Millionate MTL" (TOSOH system, carbodiimide MDI).

In the present material, the component (C) is preferably formulated to have an isocyanate group of the component, and an equivalent ratio of the hydroxyl groups to the total of the components (A) and (B) is NCO/OH = 0.8 to 1.2, more preferably 1.0. To 1.1. When the equivalent ratio is within this range, it is preferred because it is less likely to cause hardening failure, foaming, cracking, and expansion.

<Inorganic Pigment (D)>

The present material preferably contains an inorganic pigment (D) (hereinafter also referred to as "component (D)") from the viewpoint of reducing hardening shrinkage and easily obtaining a cured body having a higher Young's modulus. In the present material, since the components (A) and (B) are used, even if the component (D) is contained, the fluidity is sufficient, and the material is excellent in the ease of repair of the plate track. Further, since the component (D) is inexpensive compared to the resin components such as the components (A) and (B), the use of the component (D) is economically advantageous.

When the material is a two-component type composition, the component (D) may be blended in a curing agent, but it is preferably formulated in a main component from the viewpoint that a hardened body having uniform physical properties can be easily obtained.

The component (D) may be used alone or in combination of two or more.

The component (D) may, for example, be cerium oxide, calcium carbonate, barium sand, mica, potassium feldspar, apatite, kaolin, clay, bentonite, titanium oxide, zinc oxide, magnesium carbonate or barium sulfate. Among them, from the viewpoint of obtaining a material excellent in storage stability and economy, and obtaining a hardened body having a Young's modulus equivalent to that of CA mortar, it is preferable to use cerium oxide or calcium carbonate. It is preferable to increase the use time of the repairing material and obtain a hardened body having a lower residual stress, and it is preferable to use cerium oxide.

The weight average particle diameter measured by the 14th sieve residue of the JIS K5101 pigment test method according to the component (D) is not particularly limited, but it is excellent in the ease of repairing the filling property and the pattern track from a predetermined viscosity. From the viewpoint of materials and the like, it is preferably 100 μm or less, more preferably 45 μm or less. In addition, the lower limit of the weight average particle diameter is not particularly limited, but is, for example, 1 μm from the viewpoint of excellent handleability and the like.

Commercial products of the component (D) include, for example, "silica TK-1" (Tohoko Powder Mining Association, yttrium oxide), "Tanka Super SS" (Maruo Calcium, calcium carbonate), "Northeast矽砂8" (Northeast 矽砂(股), 矽砂), "Mica powder 200 mesh" (Fukuoka Talc Industrial Co., Ltd., mica), "R-5N" (堺Chemical Industry Co., Ltd.) , titanium oxide) and so on.

In addition, from the viewpoint of obtaining a material having a predetermined viscosity and being more excellent in the ease of repairing the filling property and the layout track, and obtaining a hardened body having a high Young's modulus, etc., relative to the material (solid The content of the component (D) is preferably from 0 to 40% by mass, more preferably from 10 to 35% by mass, particularly from the point that a hardened body having a Young's modulus equivalent to that of the CA mortar can be easily obtained. In view of the above, the special system is 14 to 33% by mass.

In addition, it is possible to obtain a hardened body having a predetermined viscosity and having excellent repairability (fluidity) in filling property and layout track, and a hard body having a high Young's modulus can be easily obtained. (B) 100 parts by mass, and the content of the component (D) is preferably 450 parts by mass or less, and more preferably, from the viewpoint that a hardened body having a Young's modulus equivalent to that of the CA mortar can be easily obtained. 370 parts by mass or less, more preferably 320 parts by mass or less, and particularly preferably 280 parts by mass or less. When the content of the component (D) exceeds the above range, the Young's modulus of the obtained cured body may become too high, and a material having excellent fluidity may not be obtained. In addition, the content of the component (D) is preferably 50 parts by mass or more, and more preferably 80 parts by mass or more based on 100 parts by mass of the component (B).

<Other ingredients>

The material may contain other components than the above components (A) to (D) as needed within the range not impairing the object of the present invention. Examples of other components include an antifoaming agent, a dispersing agent, a catalyst, a moisture adsorbent, a surface conditioner, a rheology modifier, a leveling agent, a plasticizer, a solvent, and the like.

The other components may be used alone or in combination of two or more.

When the material is a two-component type composition, the other components may be formulated in the hardener, but it is preferably formulated in the main agent.

[antifoaming agent]

From the viewpoint of obtaining a hardened body or the like which maintains a high Young's modulus during the length of the energy, it is preferred that the hardened body obtained from the material has no bubbles. Therefore, it is preferred to formulate an antifoaming agent in the present material.

The type of the antifoaming agent may, for example, be a polyoxymethylene-based antifoaming agent or a mineral oil-based antifoaming agent.

As the antifoaming agent, any of a water-based, solvent-based, and solvent-free type may be used. However, in order to suppress the hardening and shrinkage at the time of forming a hardened body, a solvent-free polyoxynoxy-based antifoaming agent is preferable. A commercially available product of a solvent-free polyoxygenated antifoaming agent is, for example, "Dow Corning Toray SAG-47" (manufactured by Dow Corning Toray Co., Ltd.).

The content of the antifoaming agent is preferably from 0 to 1% by mass based on the material (solid content).

[Dispersant]

When the present material contains the component (D) from the viewpoint of obtaining a hardened body having a uniform physical property and maintaining a high Young's modulus for a long period of time, the component (D) is uniformly dispersed. Hardening of the material is preferred. Since the component (D) is easily obtained as a uniformly dispersed composition, it is preferred to formulate a dispersant in the present material.

The type of the dispersant is not particularly limited, and examples thereof include a phosphate ester dispersant. Commercial products of the phosphate ester dispersant include, for example, "Efka 5220" (manufactured by BASF Japan Co., Ltd.), "BYK W972" (manufactured by BYK Japan Co., Ltd.), and the like.

The content of the dispersant is preferably from 0 to 2% by mass based on the material (solid content).

[Moisture adsorbent]

When the hard material is formed from the material which absorbs the moisture contained in the atmosphere or the component (D), the moisture reacts with the component (C) which is a hardener, and there is a possibility of foaming. In order to suppress the foaming, it is preferred to remove the moisture in the material. Therefore, it is preferred to formulate a moisture adsorbent in the material.

The moisture adsorbent is not particularly limited as long as it has a water-adsorbing ability, and a conventionally known one can be used. For example, "molecular sieve 4A" (manufactured by Union Showa Co., Ltd.) can be used.

The content of the moisture adsorbent is preferably from 0 to 3% by mass based on the material (solid content).

[catalyst]

This material may contain a catalyst which promotes the reaction of the above components (A) and (B) with the above component (C).

Examples of such a catalyst include tin carboxylate, an amine catalyst, a metal carboxylate other than tin, and 1,8-diazobicyclo[5,4,0]undecene-7 (DBU) salt. Examples of the tin carboxylate include dibutyltin dilaurate, dibutyltin diacetate, and tin octylate. Examples of the amine catalyst include triethylamine, triethylenediamine, and tetramethylbutanediamine, and metal carboxylates other than tin. Examples of the acid salt include cobalt octoate, manganese octoate, and zinc octoate. Examples of the DBU salt include DBU-stearate, DBU-oleate, and DBU-antate.

Commercial products of such catalysts include, for example, "GLECK TL" (daily trade (stock) system), "DABCO 33-LV" (AIR PRODUCTS Japan), and "Neostan U-28" (Nitto Kasei ( ()) and "Triethylamine" (made by Daicel).

The content of the catalyst is preferably from 0 to 0.01% by mass based on the material (solid content).

[Plasticizer]

The repair of the layout track usually causes the repair material to flow into the desired place, and thereafter, the repair material is hardened. Therefore, the repairing material is required to have a predetermined fluidity. In order to adjust the viscosity, the conventional repairing material uses a petroleum hydrocarbon-based, phthalic acid-based or castor oil-based plasticizer which does not have a reactive group (hydroxyl group).

However, after the hardening of the repairing material, the plasticizer easily oozes out from the obtained hardened body, so that it is likely to be released into the environment or the cured body is deteriorated. In particular, exudation of substances suspected of having environmental hormonal effects or carcinogenicity of dioctyl phthalate (DOP) is relatively poor.

Therefore, although the material may contain a plasticizer, particularly a plasticizer which does not easily adversely affect the environment even if it exudes, the present material containing the above components (A) to (C), even if the plasticizer is not formulated Since it has sufficient fluidity, it is preferable to contain no plasticizer from the viewpoint of reducing the amount of components oozing out into the environment and suppressing deterioration of the hardened body.

<Physical properties of this material>

The viscosity of the material measured by the Ubbelohde viscometer at 25 ° C according to JIS Z8803:2011 is preferably 500 from the viewpoint of obtaining a material which is more excellent in the ease of repairing the filling property and the layout track. It is preferably 3,000 mPa ‧ s, and more preferably 1,000 to 2,000 mPa ‧ s.

According to this material, a composition having such a viscosity can be easily obtained even without containing a plasticizer.

<Modulation method of this material>

This material can be prepared by mixing the above components (A) to (C), and further optionally the above component (D) and other components.

The method of mixing is not particularly limited. However, if air is taken up during the preparation of the main agent or when the main agent and the curing agent are mixed, bubbles may remain in the obtained hardened body, which may cause cracks or deformation, so that the main It is preferred to carry out the defoaming step during the preparation of the agent, or to stir at a low rotation while mixing the main agent and the hardener to reduce the amount of air absorbed in the material.

Hardened body

The hardened body of the present invention can be formed by hardening the aforementioned material. The hardened body is usually formed in a gap between the track plate and the roadbed side structure.

According to the material, a hardened body having a high Young's modulus can be obtained. Therefore, by using the hardened body as a filling layer between the track plate and the roadbed side structure, the track plate can be sufficiently supported, and the dynamic displacement of the track plate generated when the train travels can be suppressed, and a comfortable ride can be provided. sense.

Further, from the viewpoint of shortening the hardening time and the like, heating may be performed when the material is cured, but usually, heating is not required, and it may be left at room temperature for 20 minutes to 1 hour.

Since this material is excellent in hardenability at normal temperature, it can be hardened at a normal temperature for a short time. Therefore, this material is suitable for use as a repair material for a plate track.

The aforementioned Young's modulus refers to the relationship between stress and strain when the object is stretched and compressed. In the graph with stress as the vertical axis and strain as the horizontal axis, the relationship of the relationship is proportional to the elastic range, and the slope of the graph is the Young's modulus. Young's modulus can be used as an indicator of the ease of deformation of an object.

The Young's modulus of the hardened body is measured using a hardened body having a size of φ 50 × 100 mm, using a compression gauge at a room temperature of 23 ° C and a displacement speed of 0.5 mm / min, and from a stress of 0 to 0.1 N / mm. The value calculated from the increase in the strain of the range of ² . Specifically, the graph in the range of the stress degree of 0 to 0.1 N/mm ² is a quadratic curve close to the line type, so the slope of the tangent of the quadratic curve at 0.1 N/mm ² is used as the Young's modulus. .

The Young's modulus of the hardened body is preferably from 700 to 2700 N/mm ² , more preferably from 1400 to 2700 N/mm ² , from the point of becoming a hardened body having a high Young's modulus. In view of the hardened body of the Young's modulus of the same degree of mortar, it is more preferably 1600 to 2400 N/mm ² and a particularly good system of 1,800 to 2000 N/mm ² . When the Young's modulus is lower than the above range, there is a case where the hardened body cannot sufficiently support the track plate. Further, when the Young's modulus is higher than the above range, the Young's modulus is too high, and the load from the track plate is concentrated on the repaired portion, and the track plate is damaged.

Further, when the Young's modulus of the hardened body is equal to that of the CA mortar, the effect of suppressing the dynamic displacement of the track plate when the train travels is high, and a more comfortable ride feeling can be provided.

<How to fix the layout track>

The method for repairing a type of rail according to the present invention includes the step of filling the repaired portion of the filler layer between the track plate and the roadbed-side structure and hardening the material to form a hardened body.

The method of filling the material in the repairing portion of the filling layer is not particularly limited, and a conventionally known method can be used. For example, it is possible to use a frame in which the deteriorated portion of the packed layer is removed in advance and surrounded by the removed portion. A frame repair method that fills the material in the mold frame and fills it.

Further, in addition to the method of using the above-described mold frame, a method in which a bag body such as a non-woven fabric or the like is provided in advance at the repairing portion, the material is filled and hardened in the bag body, and foaming is provided at the repairing portion. a method in which a molded body or the like is embedded in a mold, and the material is filled and hardened in the inner repair portion; the adhesive sheet is attached to the side opening portion of the repaired portion, and the material is filled and hardened in the inner repair portion. Method and so on.

<Layout track>

The layout rail of the present invention is provided with a roadbed side structure and a track plate through a filling layer, and a track rail is formed on the track plate, and at least one part of the filling layer is hardened by the foregoing material. body.

Such a track can be manufactured, for example, by the same method as the above-described method of repairing a track. In other words, the layout rail may be, for example, at least one portion of the filling layer, specifically, a patch structure repairing body in which at least one portion of the peripheral portion of the filling layer is a hardened body of the material.

For example, an elevated structure, an underground structure, a bridge, or the like constructed of concrete or the like may be used as the roadbed-side structure, and the track plate may be, for example, a track plate made of concrete or the like.

Specifically, as shown in FIG. 1 , such a track is provided with a track plate 24 on the surface of the roadbed side structure 20 through at least one of the hardened layers 22 of the present material, and is provided in the track plate 24 A pair of track rails 30, 30 are provided on the upper surface, preferably a pair of track rails 30, 30 are locked. Further, the track plate 24 is provided with the notch portions 26 and 26 at both end portions, and the projection portion 28 provided at the predetermined interval on the roadbed side structure 20 and the notch portion 26 of the track plate 24 are aligned.

 [Examples]  

Next, the present invention will be described in more detail based on examples, but the present invention is not limited to the examples.

The raw materials used are as follows.

[More than 2-functional polyfunctional polyol (A)]

‧ "URIC H-102": (Ito oil (stock), 5-functional castor oil polyester polyether polyol, hydroxyl value: 320 mgKOH / g, viscosity: 1100 mPa ‧ s, number average molecular weight: 877)

‧ "EXCENOL 410NE": (Asahi Glass Co., Ltd., 4-functional polyether polyol (alkali oxide adduct of pentaerythritol), hydroxyl value: 410 mgKOH/g, viscosity: 1800 mPa‧s, number average molecular weight: 550)

[2-functional polyol (B)]

‧"URIC Y-403": (Ito oil (share) system, 2-functional castor oil polyester polyol, hydroxyl value: 160 mgKOH/g, viscosity: 220 mPa‧s, number average molecular weight: 719)

[Isocyanate compound (C)]

‧"Lupranate M20S" (BASF INOAC Polyurethanes (share), crude MDI)

[Inorganic Pigment (D)]

‧"silica TK-1": (Dongong 矽 powder mining association system, yttrium oxide)

‧"Tanka Super SS" (Maruo Calcium, calcium carbonate)

[Other ingredients]

‧"SAG-47" (Dow Corning Toray Co., Ltd., dimethyl polyoxyalkylene defoamer)

‧"EFKa 5220" (BASF Japan, phosphate ester dispersant)

‧"10%GLECK TL" (Richen Trading Co., Ltd., carboxylate butyltin metal catalyst)

‧"Molecular Sieve 4A" (Union Showa, moisture adsorbent)

[Example 1]

40.0 parts by mass of "URIC H-102" which is a bifunctional polyfunctional polyol (A), 15.0 parts by mass of "URIC Y-403" which is a bifunctional polyol (B), and "Efka 5220" as a dispersing agent. 0.4 parts by mass was placed in a container, and these were uniformly dispersed by using a high-speed disperser at 30 minutes and 5000 rpm. Then, 45.0 parts by mass of "silica TK-1" as the inorganic pigment (D) was added, and the mixture was dispersed at 1 hour and 5000 rpm, and 0.1 parts by mass of "SAG-47" as an antifoaming agent was further added in order. In addition, 0.01 parts by mass of "10% GLECK TL" as a catalyst and 2.8 parts by mass of "molecular sieve 4A" as a moisture adsorbent were dispersed for one hour to make these uniform, thereby preparing a main component.

The average amount of hydroxyl groups (average OH%) in the obtained main component was 4.46%.

The "Lupranate M20S" 38.0 mass of the isocyanate compound (C) as a curing agent component is added to the main component in an amount such that the isocyanate group of the isocyanate compound and the hydroxyl group of the polyol are equal to the NCO/OH ratio of 1.04. The mixture was mixed and defoamed to prepare a composition.

[Examples 2 to 17, Comparative Examples 1 to 3]

The composition was prepared in the same manner as in Example 1 except that the components shown in Table 1 below were used in the amounts shown in Table 1. Further, the numerical values of the main component and the hardener component in Table 1 indicate the parts by mass.

The composition obtained in Example 3 was measured in the same manner according to JIS Z8803:2011 and using a Ubbelohde viscometer at a viscosity of 1390 mPa·s at 25 ° C. The viscosity of the composition obtained in Example 13 was 1800 mPa. s.

<Young's modulus>

The compositions obtained in Examples 1 to 17 and Comparative Examples 1 to 3 were placed in a mold and allowed to harden at room temperature for 60 minutes, thereby forming Cylindrical hardened body of 50 mm × height of 100 mm. Further, the main component and the hardener component are mixed before flowing into the mold.

Using the obtained hardened body, a hydraulic pressure-fed fatigue tester (Servopulser) EHF-EG10-20L (manufactured by Shimadzu Corporation) and a compression meter CM-5 (manufactured by Tokyo Instruments Research Institute Co., Ltd.) at room temperature The strain was measured under the conditions of a displacement speed of 0.5 mm/min at 23 ° C, and the Young's modulus was calculated from the increase amount of the strain in the range of the stress degree of 0 to 0.1 N/mm ² . Specifically, the graph in the range of the stress degree of 0 to 0.1 N/mm ² is close to the quadratic curve of the line type, so the slope of the tangent of the quadratic curve at 0.1 N/mm ² is taken as the Young's modulus. The results are shown in Table 1.

On the other hand, the use of conventional patch-based vinyl ester resin material, polyurethane resin-based repair materials measured in the same Young's modulus of the hardened condition of about 15 to 70N / mm ^2.

Since the hardened body obtained from the compositions obtained in Examples 1 to 17 has a sufficient Young's modulus, it is particularly useful in the case where the deterioration of the packed layer is severe (for example, the length of the end portion of the packed layer to be removed at the time of repair is 100 mm). Above, even up to 200mm or more) repair of the layout track in a cold area. Further, since the plasticizer has sufficient fluidity even if it is not formulated, it can be completely filled in the void portion formed between the track plate and the roadbed-side structure at the time of repair, and the repair material can be formed without generating a gap in the void portion. Hardened body.

Further, since the hardened body obtained from the composition obtained in Comparative Example 3 was too high in Young's modulus, it could not be suitably used for the repair of the plate track, particularly between the track plate and the roadbed side structure.

Claims (15)

 A type of track repairing material comprising a polyfunctional polyol (A) having more than two functions, a bifunctional polyol (B), and an isocyanate compound (C).    The repairing material for a track according to the first aspect of the invention, wherein the polyfunctional polyol (A) is a tetrafunctional or higher polyhydric alcohol.    The repairing material of the slab track according to the first or second aspect of the invention, wherein the content of the polyfunctional polyol (A) is 150 parts by mass or more based on 100 parts by mass of the bifunctional polyol (B).    The repair material for the track of the type described in claim 1 or 2 contains the inorganic pigment (D).    The repairing material of the slab track according to the fourth aspect of the invention, wherein the content of the inorganic pigment (D) is 450 parts by mass or less based on 100 parts by mass of the bifunctional polyol (B).   The repairing material of the layout rail according to claim 1 or 2, which satisfies the following conditions; the condition: the Young's modulus of the hardened body of the repairing material of the above-mentioned rail is 700 to 2,700 N/mm ² .  The repairing material for a track according to the first or second aspect of the invention, wherein the polyfunctional polyol (A) is a bifunctional oil-based polyol having more than two functions.    The patch material for repairing a track according to the first or second aspect of the invention, wherein the bifunctional polyol (B) is a bifunctional castor oil-based polyol.    The patch material for repairing a track according to the fourth aspect of the invention, wherein the inorganic pigment (D) comprises at least one selected from the group consisting of cerium oxide and calcium carbonate.    The patch material of the type of track according to the invention of claim 5, wherein the inorganic pigment (D) comprises at least one selected from the group consisting of cerium oxide and calcium carbonate.    The repairing material for a slab track according to the first or second aspect of the invention, wherein the isocyanate compound (C) is an aromatic polyisocyanate and/or an aromatic aliphatic polyisocyanate.    A hardened body which is a hardened body of a repair material for a type of track according to any one of claims 1 to 11.    A method for repairing a layout track, comprising: filling a repair material of a layout track according to any one of claims 1 to 11 in a repair layer of a filling layer between a track plate and a roadbed side structure; It hardens to form a hardened body.    A type of track is provided with a roadbed side structure and a track plate through a filling layer, and a track rail is disposed on the track plate, wherein at least a part of the filling layer is the first patent application scope. The hardened body of the patch material of the layout track according to any one of the items 11.    A resin composition containing a polyfunctional polyol (A) having more than two functions, a bifunctional polyol (B), and an isocyanate compound (C).