JPH06226903A - Waterproof type composite fire-resistant covering material and executing method thereof - Google Patents

Abstract

PURPOSE:To provide the title fire-resistant covering material which is excellent in water resistance and fire resistance and in work-ability by overlapping a fire resistant adhesive layer on the surface of a waterproof type inorganic sheet or a metallic foil and overlapping a ceramic fiber layer and the fire resistant adhesive layer thereon. CONSTITUTION:A facing glass cloth (or metallic foil) 1 is coated with a silanol adhesive or a fire resistant adhesive sheet 2 is laminated and an alumina-silica blanket 3 is stuck under it. A fire resistant adhesive sheet 4 is stuck under the blanket and lightly contact-bonded. The whole body is packed by a mold- releasable film 5. In the case of executing it on a steel frame 6 of 300X300X10mm, the film 5 is released and the overlapped part of the facing glass cloth 1 is bonded by the fire resistant adhesive sheet 4 and executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof composite fireproof coating for the purpose of imparting fireproof performance to a structure constructed by using a steel frame such as a pillar or a beam, and a construction method thereof.

[0002]

2. Description of the Related Art In conventional fire-resistant coating work for steel frames, a spraying method using rockwool cement has been adopted, and recently, a method of applying a dry calcium silicate plate or the like has also been used.

[0003]

According to the method of spraying the rockwool cement, a large amount of dust is generated during the construction, and there is a problem that the work environment is deteriorated due to the scattering of dust and the site is contaminated. Had a problem that a lot of work was required to prevent the scattering.

Due to the above-mentioned problems, it has been practically difficult to construct the central part of the city. In addition, there are various problems such as the thickness of fireproof coating, specific gravity, and ensuring the specified quality of the parts that require the double-blowing process. Furthermore, since the adhesion and impact resistance are low, it may fall off due to rain. There were also problems in construction.

[0005] Next, even in the dry calcium silicate plate attachment method, there are cuttings and perforations at the site, there is much dust generation similar to spraying, the construction efficiency is low, and the water absorption rate in case of rain. Highly adhesive and also for fixing the plate to the steel frame,
There are problems such as low water resistance. Furthermore, commercially available products include
There are matte composite materials, but certified products with fire resistance of 1 to 3 hours are
There were various problems such as thickness of 43 mm to 90 mm, low work efficiency and low water resistance.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a waterproof inorganic sheet or a silanol salt having a siloxane skeleton on a metal foil surface is added with a fire-resistant aggregate, or an alcohol group and a bone having a drainage function. The above-mentioned conventional problems have been improved by a composite fireproof coating material in which gelled sheets are stacked by adding materials and the like to make them light and thin.

That is, the product of the present invention is an adhesive comprising a waterproof inorganic sheet or a metal foil surface and a silanol salt having a siloxane skeleton and a refractory aggregate added thereto, or an alcohol group, an amino group-containing substance and / or a poly-containing substance. A waterproof type, characterized in that a fire-resistant adhesive layer made of a sheet obtained by adding a valent metal, an aggregate for absorbing and draining water or a carbonic acid-containing material is laminated as an adhesive, and a ceramic fiber layer and the fire-resistant adhesive layer are laminated on this. It is a composite fireproof coating material. In addition, the waterproof inorganic sheet is made of an inorganic fiber cloth or an inorganic fiber that is waterproofed or has a film laminated. Next, the polyvalent metal is a cement that hydrates and elutes the polyvalent metal, and the water-intake and drainage functional aggregate is a zeolite functional material,

Furthermore, the silanol salt having a siloxane skeleton is

[Chemical 2] Fluoric or Boric silanol salt of Further, a composite of a fire-resistant adhesive layer and a ceramic fiber layer is covered with a plastic film to form a release / waterproof paper.

Next, according to the construction method of the present invention, after the steel frame surface is cleaned and blackened, before or after building, the composite fireproof coating material is wound longitudinally and laterally along the black, This is a method for constructing a waterproof composite fireproof coating material, which is characterized in that the joint portion is overlapped with a waterproof surface layer material. The biggest problem of the sheet-like fireproof coating construction method is the simple and reliable joint fireproof joint treatment method. It is a simple and reliable fireproof coating construction method characterized in that the composite fireproof coating material of the present invention is double- or triple-rolled so as to conceal the composite portion and adhesively laminated. Next, stud pins are inserted into the composite type fire-resistant coating material at a predetermined interval and are electrically welded and fixed to the steel frame surface.

The main materials used in the present invention are all fireproof materials and fireproof materials, and the construction surface layer must be water resistant and waterproof type materials. In addition, it must have a transport impact resistance quality and be a flexible multi-layer integrated material. If a glass cloth, an aluminum foil, or a stainless steel foil whose surface layer is a fire-resistant filler coated with a silicon resin is used, impact resistance and waterproofness are improved and flexibility is obtained. In addition, a fireproof / waterproof composite can be obtained by overlapping the joint portion with this surface layer during construction. This layer may be 2 mm or less and 20 microns or more. The next layer is refractory 1000-1
It uses an alumina-silica blanket at 200 ° C, has a specific gravity of 0.1-0.2, is lightweight, and has cushioning properties against impact. Depending on the required performance, select the thickness and density to use, but it has the drawback of being water-absorbing. May be covered with a waterproof surface material.
For the back surface layer, a silanol salt having a siloxane skeleton, an alcohol-containing or amino-group-containing material and / or a water absorbing / draining functional aggregate, or a sheet obtained by adding a polyvalent metal to a gel (abbreviated as a fire-resistant adhesive material) is used. However, the fire-resistant adhesive material has fire-resistant heat insulation. If the silanol salt of the present invention is modified with an alcohol group or an amino group as described above, waterproofness can be imparted. In addition, waterproofing occurs when a carbonic acid-containing substance is added and carbonated. Cement also elutes polyvalent metal, becomes a curing agent of the silanol salt of the present invention,
If it coexists with alcohol, it does not harden, and if it evaporates, it acts as a solidifying material. It has a flexible drainage function and dilatancy function that solidifies after construction.
It became possible by mixing a special zeolite. The refractory aggregate is not limited to the above-mentioned additives, and other refractory aggregates can be added. In addition, a synergistic effect is produced by using various additives together. Since the fire-resistant adhesive material also has the function and effect of an adhesive material / adhesive material between the surface layer material and the blanket, and further has fire-resistant heat insulation properties, the compounding does not require a special adhesive material, and is simply laminated. It became a composite material and produced a great number of composite functions.

[0013] JIS conformal refractory coating for 1 to 3 hours has no choice but to increase in thickness when an integrated composite material is used. If the joint is attached, it may shrink during the fire resistance test to open the joint and allow the heat flow to penetrate therethrough, and the desired performance may not occur. For example, if the composite fireproof coating material of the present invention is a fireproof material for 1 hour (blanket 12.5 mm +
Fireproof adhesive material 3mm = 15.5mm, fireproof 2 hours (fireproof adhesive material 3mm + blanket 25mm + fireproof adhesive material 1.5mm +
Garros cloth 0.35mm = 29.85mm), 1 hour fireproof product is double wrapped to 2 hours fireproof, 3 layers to fireproof 3 hours, 1 hour fireproof and 2 hours fireproof. It could be fire-resistant for 3 hours. At that time, even if it is glued and joined, if the upper layer conceals the joint portion of the lower layer and wraps it around, it does not create a weak point even if it is glued and it becomes a thin layer, and the construction is light and thin, so it is simple and reliable. became. The greatest advantage of rock wool spraying is that it has no joints, but it has produced comparable effects.

The above-mentioned fire-resistant adhesive material is produced by an extruder, roll, calender or a composite method thereof, but it is wrapped with a plastic film immediately after the production so as to maintain the plasticity up to the time of construction, to have a waterproof effect, and to be releasable. Therefore, if the film is peeled off, it can be used as an adhesive material. The silanol salt of the present invention may be mixed with a refractory aggregate, or the refractory adhesive may be used as an adhesive between the surface waterproof layer and the blanket.

The surface layer need only be waterproof and impact resistant, and may be manufactured by coating glass cloth with silicone rubber, laminating a film on a glass non-woven fabric, or laminating a film on a non-woven fabric made of cushion. I was able to.

When the fire-resistant adhesive material is manufactured, the film, the fire-resistant adhesive material, the alumina-silica blanket, and the waterproof glass cloth (or metal foil) are integrally combined (hereinafter referred to as a fire-resistant composite material). As a result, all of the above-mentioned problems of water resistance / waterproofness, impact resistance, lightness, and flexibility can be solved.

According to the construction of the present invention, if the steel frame surface is cleaned and blackened, the film can be peeled off and the fire-resistant composite material can be wrapped and adhered, which can be easily positioned, and insulpin can be electrodeposited and fixed with a dry bit. , It was possible to construct it freely on the steel frame fabricator, on site or in place. We were able to solve the problem that the fabricator could not bring it into the site without damage, which could not be solved by the conventional method.

As for the joint construction on site, as long as there is a grip and a cutter, all the materials are lightweight and flexible, so they fit well in complex shapes. A fireproof adhesive material is applied, a blanket is overlaid, and a surface material is applied. It could be installed easily.

[0017]

The above refractory composite material of the present invention is JIS-A-1.
Fireproof 1 hour products specified in 304 are 18 mm or less, 8 kg
It is light and thin with / m ^{2 or} less, and even with a fireproof 2 hour product, it is 38 mm ~
It fits within 28 mm, is lighter than about 12 kg / m ² and is waterproof, and has a drop weight test before and after a fire resistance test without breaking, and a water spray test was performed on the construction body, but it is waterproof. Proved that. Construction could be done easily by two people on the ground in a short time. The details will be described in the following examples.

[0018]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the structure of the refractory composite material 7, FIG. 2 shows its composite shape, and FIG. 3 shows its construction form.

The surface glass cloth (or metal foil) 1 (Nittobo's 0.35 mm spatter-preventing cloth) is coated with the silanol adhesive or the fire-resistant adhesive sheet 2
And the alumina-silica blanket 3 under the blanket, and the fire-resistant adhesive sheet 4 under the blanket.
Layered, lightly pressure-bonded, and the whole film 5 with releasability
I packed it in. FIG. 3 shows a case where the steel frame 6 having a size of 300 mm × 300 mm × 10 mm is applied. The film 5 is released from the overlap portion of the surface material glass cloth 1, and the fire resistant adhesive material sheet 4 is used for adhesion.

In the above-mentioned embodiment, the iron pillars constructed as shown in FIG.
Water was sprinkled with a hose, but there was no inundation. Also, even if the iron pillar is laid sideways and a 5 kg weight is dropped from a height of 1 m,
Restored (when using glass cloth).

[0021]

[Example 2] A silanol salt having a siloxane skeleton of 1.4 or more was concentrated or added with an alcohol or a polyamine compound, for example, 10% by weight of polyacrylic amide for modification / subsequent Poval's solution treatment. 3mm x 200mm with 80wt% synthetic zeolite added
25m by coating 220g / m ^{2 on} 200mm iron plate
A 10-lb blanket was applied and cured at 40 ° C for 2 days. Take it out, soak it in water, pull it up, and
Tilt to 5 °. After 10 minutes, most of the water had flowed out, but the adhesive layer remained, indicating that it was waterproof.

[0022]

[Embodiment 3] FIGS. 4 (a), (b) and (c) show a steel pipe column 6a and an H-shaped steel 6
The construction drawing of the pillar / beam 6 of b is shown. FIG. 5 shows the structure of the refractory composite material 7 of the present invention, which is applied to columns and beams.
The refractory composite material 7 of the present invention is adhered to the outside of the steel frame, and then the insulpin 8 is penetrated at appropriate intervals and electrically welded. That is, the fire-resistant composite material 7 is easily and accurately attached to the steel frame by the fire-resistant adhesive material 4, so that it can be mastered in a short time, and since it is fixed by the insulpin 8, there is no peeling after the construction. .

[0023]

[Embodiment 4] FIG. 6 shows the results of a fire resistance test of the 15 mm and 35 mm products of the refractory composite material according to the method of JIS-A-1304. The temperature was around 320 ° C. Table 1 shows the configuration.

[0024]

[Table 1]

[0025]

[Example 5] Of the aqueous silanol salts having a siloxane skeleton, those having a specific gravity of 1.5 or more were taken out, and the weight ratio was 5
0% zeolite (Nippon Steel) was mixed. 30% Poval liquid (made by Kuraray) mixed with 50% of cement was prepared, 20% of this was added to the mixture, and after carefully mixed with a kneader, a 680 mm width was applied with an extruder of 120 mm (made by Universe). Extruded to a thickness of 2.5 mm, and made of vinylon gauze (made by Kuraray) into 0.02 mm PP.
Was adhered (or not adhered) onto which the extruded product was drawn, on which was previously cut 1.3 m 35
mm, 8 lbs blanket 600mm width (Isolite)
And was cut into a predetermined size. Further on, 0.0
While applying a fire-resistant adhesive to a 2 mm x 650 mm aluminum foil (made by Tokai Metal Co., Ltd.), put this aluminum foil on it, as shown in FIG.
The edge covered the blanket, and the surface layer and the fire-resistant adhesive were adhesively finished. Further, the whole was put in a PE bag and vacuum packed. Even if it was left outside for 3 months in this state, it remained buxible.

As described above, continuous molding was possible, and the integrated refractory composite material could be produced at high speed. The product was waterproof before and after construction.

2 depending on the nature of each natural and synthetic zeolite
Mixing of 0% to 300% was possible. The Poval liquid could be used by changing its concentration to 10 to 50% depending on the four seasons.

[0028]

Example 6 A silanol salt having a siloxane skeleton according to the present invention was produced by an esterification reaction or an amination reaction.
In addition, the carbonation reaction provided waterproofness. The silanol salt and poval were completely waterproof at 13:10 in terms of solid content. Further, the silanol salt of the present invention was compatible with the amide group-containing polymers polymethyloxazoline, polyvinylpyrrolidone, and polydimethylacrylamide, without being treated with alcohol. When 20% hydrochloric acid was added slightly to open the ring, the hybridized product was coated on glass, dried and then subjected to a water immersion boiling test. As a result, it was observed that the product was waterproof. Methanol was mixed with 10 parts by weight of baking soda and 300 parts of zeolite, which was mixed with 50 parts of the silanol salt.
Mixed with 0 parts. This cured product had a waterproof property that did not change even when it was boiled in water.

[0029]

[Embodiment 7] FIGS. 7 (a) and 7 (b) show detailed construction diagrams of the prism 6. That is, using a blanket 35mm, finish 38
mm refractory composite 7. The method of winding the fire-resistant composite material in the above is not limited to horizontal lining, and vertical lining can be efficiently applied.

[0030]

[Embodiment 8] The 15 mm refractory composite material used in FIG. 6 has a performance of fire resistance of 1 hour, but it was double wound and subjected to the same fire resistance test.
The temperature did not reach 50 ° C. and exceeded the performance of the 35 mm refractory composite material shown in FIG.

The 15 mm and 35 mm used in the same figure were double wound and subjected to a fire resistance test, but the temperature was only 320 ° C. in 3 hours,
Further, the result of triple winding of the refractory composite material for 1 hour of refractory was 300 ° C. or lower.

FIG. 8 is a construction drawing of the work, and the actual work was extremely easy because it was lightweight and adhered.

[0033]

INDUSTRIAL APPLICABILITY The present invention is directed to an adhesive obtained by adding a refractory aggregate to a silanol salt having a siloxane skeleton on the surface of a waterproof inorganic sheet or a metal foil, or an alcohol group-containing, amino group-containing and / or polyvalent compound. A fire-resistant coating for composite steel frames, characterized in that a fire-resistant adhesive layer made of a sheet obtained by adding a metal, an aggregate for absorbing and draining water or a carbonic acid-containing material is laminated, and a ceramic fiber layer and the fire-resistant adhesive layer are laminated thereon. Since it is a material, it has various effects such as excellent water resistance and fire resistance, and flexible and thin workability. Even if one more layer is wound, the second layer will cover the joints on the lower layer and will be the same as without joints, and the construction speed will be faster. Further, even in the field work, there is no fear of environmental damage, and since the fire-resistant coating material is fixed by the adhesive material and the insulpine, there is no possibility of peeling or deformation even when subjected to aging or impact. Regarding the above-mentioned fire resistance, since the steel frame is not heated to 350 ° C. or more in the event of a fire, there are various effects such as having sufficient strength and maintaining load bearing capacity.

[Brief description of drawings]

FIG. 1 is a partially cutaway enlarged perspective view of a fireproof coating material of the present invention.

[Fig. 2] Similarly, a partially enlarged cross-sectional view of a construction example of a fireproof coating material.

FIG. 3 is a partially enlarged cross-sectional view showing a mounting state of a joint portion in the same manner.

[Fig. 4] Fig. 4 is also a diagram showing an example of pillar / beam construction, in which (a) is an enlarged sectional view of a square steel column, (b) is an enlarged sectional view of an H-shaped steel column, and (c) is a floor and beam. Enlarged cross-sectional view showing the mounted state

FIG. 5 is a partial cross-sectional perspective view showing the construction of each part.

FIG. 6 is a heating temperature-time graph of a steel frame similarly using a fireproof coating material.

[Fig. 7] (a) and (b) are enlarged cross-sectional views when applied to a prism.

FIG. 8 (a) is a cross-sectional view in which a composite material with a fire resistance of 1 hour is double-wound, and FIG. 8 (b) is a cross-sectional view in which a composite material with a fire resistance of 1 hour is triple-wound.
(c) Cross section of two layers of composite material with fire resistance of 2 hours and 1 hour, (d) Cross section of single layer of composite material with fire resistance of 2 hours

[Explanation of symbols]

 1 Surface Material Glass Cloth (or Metal Foil) 2 Fire-Resistant Adhesive Sheet 3 Alumina-Silica Blanket 4 Fire-Resistant Adhesive Sheet 5 Releasable Film 6 Steel Frame 7 Fire-Resistant Composite 8 Insulpine 9 Fire-Resistant 1-Hour Composite 10 Fire-Resistant 2 Fireproof composite of time 11 Joints

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[Procedure amendment]

[Submission date] October 2, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

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[Figure 8]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kokuda 5-20-6 Motomura, Chigasaki City, Kanagawa Prefecture (72) Inventor Katsuhiro Kokuda 5-20-6 Motomura, Chigasaki City, Kanagawa Prefecture

Claims (8)

[Claims] 1. An adhesive comprising a silanol salt having a siloxane skeleton and a refractory aggregate added to a waterproof inorganic sheet or a metal foil surface, or an alcohol group, an amino group-containing material and / or a polyvalent metal, and water absorption and drainage. A waterproof composite fireproof coating characterized in that a fireproof adhesive layer made of a sheet obtained by adding a gel containing functional aggregate or a carbonic acid-containing material is laminated as an adhesive, and a ceramic fiber layer and the fireproof adhesive layer are laminated thereon. Material. 2. The waterproof composite fireproof coating material according to claim 1, wherein the waterproof inorganic sheet is made of an inorganic fiber cloth or an inorganic fiber that is waterproofed or a film is laminated. 3. The waterproof composite fireproof coating material according to claim 1, wherein the polyvalent metal is a cement which hydrates to dissolve the polyvalent metal, and the aggregate for absorbing and draining water is a zeolite functional material. 4. The silanol salt having a siloxane skeleton is represented by: 2. The waterproof composite fireproof coating material according to claim 1, which is a fluoric or boric silanol salt. 5. The waterproof composite fireproof coating material according to claim 1, wherein a composite of the fireproof adhesive layer and the ceramic fiber layer is covered with a plastic film to form a release / waterproof paper. 6. A composite fireproof coating is wound longitudinally and laterally along the black ink after cleaning the steel surface and exposing it, before building it, or after building it, and said joint is a waterproof surface material. A method for constructing a waterproof composite fireproof coating material, which is characterized in that it overlaps. 7. The method for constructing a waterproof composite fireproof coating material according to claim 6, wherein the composite fireproof coating material is wound in a double or triple manner. 8. The method for constructing a waterproof composite fireproof coating material according to claim 6, wherein stud pins are inserted into the composite fireproof coating material at predetermined intervals and are fixed by electric welding to the steel frame surface.