JP2001291757A - Transfer member made of CFRP having a processed surface coated and a method of processing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CFRP transfer member which is processed by hardly contaminating a precision equipment material while making use of the inherent light weight and high rigidity of CFRP, and a processing method therefor. SOLUTION: It is resistant to a polar solvent and is 70 ° C.
The processing surface is coated with a resin that cures at a low temperature as described below, and a conveying member made of CFRP;
A resin which is resistant to a polar solvent and is cured at a low temperature of 70 ° C. or less, diluted to 60 wt%, is applied to the processing surface of a CFRP transfer member.
A method for treating a CFRP transfer member, wherein the member is cured by heating at a temperature of not more than ° C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer member made of CFRP (carbon fiber reinforced plastic) having a processed surface coated and a method of processing the same, and particularly suitable for the transfer of materials for precision equipment such as liquid crystal display devices and silicone wafers. The present invention relates to a coated member and a processing method thereof.

[0002]

2. Description of the Related Art Carbon fibers are impregnated with a matrix resin to form prepregs, and a laminate obtained by laminating these prepregs is cured at an appropriate temperature to obtain a carbon fiber reinforced plastic (hereinafter referred to as "CFRP"). can do.

[0003] CFRP is used for sports and leisure goods such as golf shafts, fishing rods and tennis rackets; industrial materials such as aircraft-related products, rolls for printing ink, pressure vessels, and members of industrial robots; materials for repairing bridges and civil engineering. It is used for civil engineering materials such as materials.In recent years, with the increase in size of liquid crystal display devices, it has been used as a transport member for industrial robots for transporting these precision equipment materials, instead of conventional aluminum or other metal materials. Rigid CFRP has begun to be used.

[0004] By the way, many precision equipment materials extremely dislike contamination due to dust and dirt, and it is necessary that the transporting member made of CFRP is a material that does not contaminate the precision equipment material. Further, before use, a cloth impregnated with an alcohol-based or acetone-based polar solvent is often used to wipe off dust and dirt from the CFRP transporting member. It was vulnerable to wiping with a cloth soaked in a polar solvent that was exposed, and there was a possibility that carbon fine particles generated from carbon fibers would contaminate precision equipment materials.

[0005]

DISCLOSURE OF THE INVENTION The present invention overcomes the above-mentioned problems and makes use of the inherent light weight and high rigidity of CFRP, while also minimizing contamination of precision equipment materials. It is an object of the present invention to provide a member for manufacturing and conveying and a method for treating the member.

[0006]

That is, a first aspect of the present invention is characterized in that a processed surface is coated with a resin which is resistant to a polar solvent and which cures at a low temperature of 70 ° C. or lower. An object of the present invention is to provide a CFRP transfer member.

Further, the second invention of the present invention relates to a method for preparing
A method for treating a CFRP transport member, characterized in that the resin diluted to wt% is applied to a processed surface of the CFRP transport member, and the applied resin is heated and cured at 70 ° C. or lower. To provide.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as a resin having resistance to a polar solvent and curing at a low temperature of 70 ° C. or less (hereinafter referred to as “coating resin”), a silicone resin (moisture-curable silicone resin, Alkyd-modified silicone resin, epoxy-modified silicone resin, addition-reaction silicone resin), alkyd resin, unsaturated polyester resin (peroxide-curable unsaturated polyester resin, ultraviolet-curable unsaturated polyester resin), oil-modified alkyd resin , Cyanoacrylate resin (moisture-curable cyanoacrylate resin),
Acrylic resin, polyurethane resin (alkyd polyol-type polyurethane resin, acrylic polyol-type polyurethane resin, polyester polyol-type polyurethane resin), epoxy resin (amine-curable epoxy resin, ultraviolet-curable epoxy resin, room temperature-medium temperature curable epoxy resin), phenol Resin, epoxy alkyd resin, epoxy ester resin, resol type / P-toluenesulfonic acid curable phenol resin, or the like, or 2 selected from these.
Mixtures of more than one resin are included.

For example, the mixing weight ratio of two resins selected from these resins is 1: 0.05 to 0.05:
1 is preferred.

[0010] Among them, acrylic resin, ultraviolet curable epoxy resin, room temperature-medium temperature curable epoxy resin, moisture curable silicone resin or a mixture thereof is preferable because of its excellent resistance to wiping by a polar solvent.

In the present invention, the coating resin having resistance to a polar solvent means that the coated surface is easily melted, swollen, or sticky even when the resin coated surface is wiped with a cloth containing a polar solvent. Means that the dust and carbon particles derived from carbon fibers do not substantially scatter from the conveying member, and that the cloth used for wiping the resin-coated surface is not substantially contaminated with the carbon particles. Say.

The polar solvent referred to in the present invention is an acetone-based or alcohol-based solvent, for example, acetone,
Refers to diethyl ketone, methyl ethyl ketone, methanol, ethanol, isopropyl alcohol, and mixtures thereof.

As the polyurethane resin, a two-pack type resin obtained by blending an acrylic polyol with a monomer such as tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate and polymethylene polyphenyl polyisocyanate, and an adduct. A resin formulation is used. As these isocyanates, any of commercially available isocyanates can be used, but adducts are preferable in consideration of handleability.

Commercially available adducts include Coronate T-100, Millionate MT and Millionate MR-2.
00 (each trade name, manufactured by Nippon Polyurethane Industry Co., Ltd.) can be used. As the acrylic polyol, desmophen A160X, desmophen A265 (each trade name, manufactured by Sumitomo Bayer Urethane Co., Ltd.), Takelac UA-702, Takerac UA-902 (each trade name, manufactured by Takeda Pharmaceutical Co., Ltd.) and the like can be used.

As the acrylic resin, polyester acrylate, urethane acrylate, polyether acrylate, epoxy acrylate, polybutadiene acrylate, silicone acrylate, acrylic acrylate, and mixtures thereof are known.

A peroxide for curing at room temperature or a catalyst for ultraviolet curing can be added to these coating resins, and the resin can be cured at room temperature or by irradiation with ultraviolet rays.

Examples of the peroxide for curing at room temperature include diacyl peroxide, peroxydicarbonate, peroxyester and a mixture thereof, and these can be used in combination with a cobalt naphthenate promoter. As a catalyst for ultraviolet curing, an aromatic diazonium salt, an aromatic iodonium salt, an aromatic sulfonium salt, a metallocene compound, a mixture thereof and the like can be used. As the epoxy resin, room temperature-medium temperature curable epoxy resin and ultraviolet curable epoxy resin are preferable.

The room temperature-medium temperature curable epoxy resin referred to in the present invention is an epoxy resin which is usually cured at 10 to 90 ° C., preferably 20 to 80 ° C. When cured at 90 ° C. or lower, thermal deformation of the CFRP member can be prevented.

As the room temperature-medium temperature curing type epoxy resin, an epoxy resin obtained by reacting an alicyclic amine and / or an aromatic amine with an epoxy resin can be preferably used.

Examples of the alicyclic amine include mensendiamine, isophoronediamine, bis (4-amino-3-methylzinclohexyl) methane, diaminodicyclohexylmethane, bis (aminomethyl) cyclohexane, N
-Aminoethylpiperazine, norbornanediamine,
3,9-bis (3-aminopropyl) 2,4,8,10
-Tetraoxaspiro (5,5) undecane and Mannich adduct thereof can be preferably used, and m-xylylenediamine, α- (aminophenyl) ethylamine and Mannich adduct thereof are used as the aromatic amine. It is also possible to use a mixture of two or more of these amines.

The Mannich adduct is prepared by, for example, mixing a phenol with an alicyclic amine and / or an aromatic amine, heating the resulting mixture to 80 to 90 ° C., dropping formalin into the mixture, and stirring the mixture. It can be obtained by heating.

As the epoxy resin to be reacted with the alicyclic amine or the aromatic amine, a normal epoxy resin can be used, but a liquid epoxy resin at room temperature is preferred because it is easy to handle. A resin, a liquid alicyclic epoxy resin, a mixture thereof, or the like can be used. The mixing amount of the amine and the epoxy resin is not particularly limited, but usually 5 to 50 parts by weight of the epoxy resin can be mixed with 10 parts by weight of the amine.

Among the cured products of the room temperature-curable epoxy resin, aliphatic amine-based polyaminoimide and epoxy resin cured product of an epoxide reaction product of the polyamine and the epoxy resin have no resistance to a solvent such as alcohol and are therefore not preferred. .

The ultraviolet-curable epoxy resin includes:
For example, a liquid bisphenol-type epoxy resin, an alicyclic epoxy resin, or a mixture thereof can be used. Aromatic diazonium salt, aromatic iodonium salt,
An aromatic sulfonium salt, a metallocene compound, a mixture thereof and the like can be added to a UV-curable epoxy resin as a curing catalyst.

As the curing catalyst for the ultraviolet-curable epoxy resin, for example, San Aid SI (trade name, manufactured by Sanshin Chemical Co., Ltd.) and Adeka Opton CP-66 (trade name, manufactured by Asahi Denka Co., Ltd.) can be used.

Examples of the liquid bisphenol type epoxy resin include Epicoat 807 (trade name, manufactured by Yuka Shell Epoxy Co., Ltd.), Epototo YDF170 (trade name, manufactured by Toto Kasei Co., Ltd.), Epicron 830 (trade name,
Dainippon Ink and Chemicals, Inc.), EP-4900 (trade name, manufactured by Asahi Denka Kogyo), PY-306 (trade name,
Asahi Ciba Co., Ltd.), Epicoat 825, Epicoat 82
8, Epicoat 190, Epicoat RX-21 (trade names, manufactured by Yuka Shell Epoxy Co., Ltd.) and the like can be used.

Examples of the alicyclic epoxy resin include Celloxide 2021, Celloxide 2021A, Celloxide 2021P, Celloxide 2080, Celloxide 3000, EHPE3150 (each trade name, manufactured by Daicel Chemical), AK-601 (trade name, Nippon Kayaku Co., Ltd.) CY175, CY17), Rica Resin HBE100, Rica Resin DME-100 (trade name, manufactured by Shin Nippon Rika Co., Ltd.)
7, CY179, CY184, CY192 (trade names, manufactured by Nippon Ciba-Geigi Co., Ltd.), ERL4234, ERL4
221, ERL4206, ERL4299 (each trade name, manufactured by UCC) and the like can be used.

As the silicone resin, alkyd-modified silicone resin, epoxy-modified silicone resin, moisture-curable alcohol-type silicone resin, moisture-curable oxime-type silicone resin, and addition-reaction-type silicone resin can be used. Resins and moisture-cured oxime-type silicone resins are preferred.

The epoxy-modified silicone resin includes BY16-855D, SF8411 and SF841.
3, BY16-839 (trade names, manufactured by Dow Corning Toray Silicone Co., Ltd.) can be used.

Examples of the moisture-curable alcohol type silicone resin include SR2410, SR2406, SR24
20, SR2416 (trade names, manufactured by Dow Corning Toray Silicone Co., Ltd.) and KE4895 (trade names, manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

Dibutyltin diacetate, dibutyltin dilaurate, a mixture thereof and the like are used as the curing catalyst for the moisture-curable alcohol type silicone resin.

Examples of the moisture-curable oxime silicone resin include SR2405 and SR2411 (trade names, manufactured by Dow Corning Toray Silicone Co., Ltd.), K
E445 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

As the curing catalyst for the moisture-curable oxime type silicone resin, dibutyltin diacetate, dibutyltin dilaurate, a mixture thereof and the like can be used as in the case of the moisture-curable alcohol type silicone resin.

As a method for treating a CFRP transporting member according to the present invention, a coating resin diluted to 5 to 60% by weight with a solvent is applied to a processing surface of the CFRP transporting member, and the applied resin is treated. A method of heating and curing at 70 ° C. or lower is preferably used. According to this method, a CFRP transporting member having a processed surface coated with a resin (coating resin) that is resistant to a polar solvent and that cures at a low temperature of 70 ° C. or lower can be obtained.

Although the amount of addition is not particularly limited, fumed silica can be added to the coating resin. As this fumed silica, AEROSIL 50, AER
OSIL 130, AEROSIL 200, AERO
SIL 200V, AEROSIL 200CF, AE
ROSIL 200FAD, AEROSIL 300,
AEROSIL 300CF, AEROSIL 38
0, AEROSIL R972, AEROSIL R9
72V, AEROSIL R972CF, AEROSI
L R974, AEROSIL R202, AEROS
IL R805, AEROSIL R812, AERO
Those commercially available under the trade names of SIL R812S, AEROSIL RX200 and AEROSIL RY200 (manufactured by Nippon Aerosil Co., Ltd.) can be used.

The above coating resin can be usually used after being appropriately diluted with a solvent, and the diluted resin concentration is 5 to 60 wt.
%, Preferably 10 to 30 wt%.

The solvent for dilution is usually toluene,
Xylene, ligroin, n-heptane, mineral spirits, cellosolve acetate and the like and mixtures thereof can be used.

The concentration of the coating resin diluted with the solvent is 5% by weight.
If the amount is less, the coating obtained by applying the diluted coating resin to the processed surface becomes thin, and if the amount is more than 60 wt%, unevenness due to coating unevenness occurs on the member surface after the applied coating resin is cured, which is problematic. .

The processing surface referred to in the present invention means C
The portion where the carbon fiber of FRP is exposed, specifically, a cut surface, a polished surface, an R-processed surface, a hole-processed surface, a thin processed surface, and the like.

The method of applying the coating resin is not particularly limited, and any method can be used as appropriate. Usually, any method can be used as long as it can be applied and coated on the processing surface of the CFRP transporting member. it can.

The thickness of a coating layer obtained by applying and curing a coating resin diluted with a solvent can be usually 5 to 30 μm. If the thickness is more than 30 μm, drying is slow and dripping tends to occur, resulting in unevenness. On the other hand, if the thickness is less than 5 μm, the effect of coating is weak, which is not preferable.

The curing temperature of the coating resin is from room temperature to 70 ° C.
If not cured at 70 ° C. or less, there is a possibility that warpage or deformation may occur due to heat in the transfer member and the parts used therein, which is not preferable, and the member cannot be coated after being attached to the industrial robot. Not preferred.

[0043]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto.

(Example 1) A mounting hole having an inner diameter of 6 mm
1000mm long, 100mm wide, 8mm thick with vacuum pad mounting holes and 6mm wide, 2mm deep grooves
After the end of the CFRP plate was processed by 2 mmR, the processed surface was wiped with a dust-free clean cloth (polyester knit) impregnated with ethanol, and then a moisture-curable alcohol-type silicone coating agent SR2410 (Dow Corning Silicone Toray) Co., Ltd., resin concentration 20 wt
%, Solvent: ligroin) was applied to the processed surface using a brush. After drying the applied silicone coating agent,
To further sufficiently cure the coating agent, 5
After curing for 1 hour in a drying oven at 0 ° C., there was no coating unevenness or unevenness on the coated surface. Thereafter, the coated surface was sufficiently wiped with a dust-free clean cloth (polyester knit) impregnated with ethanol, but no stain was observed on the CFPR-coated surface and the clean cloth.

Example 2 Instead of SR2410, a mixture of 20 parts by weight of norbornanediamine (manufactured by Mitsui Chemicals, Inc.) and 100 parts by weight of Epicoat 828 (manufactured by Yuka Shell Epoxy) was mixed with toluene / MEK (weight ratio: 1). : 2) Diluted with a mixed solvent to a resin concentration of 30 wt% to obtain a diluted coating resin. The obtained diluted coating resin was applied to the CFRP processed surface treated in the same manner as in Example 1 using a brush, and the applied resin was cured in a drying oven at 60 ° C. for 1 h.
There was no coating unevenness or unevenness on the coated surface, and the coated surface was sufficiently wiped with a dust-free clean cloth (polyester knit) impregnated with ethanol, but no stain was observed on the CFPR coated surface and the clean cloth.

Example 3 282 g of phenol and 408 g of m-xylylenediamine were charged and mixed into a 2 L four-necked flask equipped with a stirring blade, a reflux condenser, a nitrogen gas inlet tube and a thermometer. The mixture was heated to 80 to 90 ° C and heated. With stirring, 180 ml of 37% formalin was added dropwise to the mixture over about 1 hour. After completion of the dropwise addition, the mixture was heated to 100 ° C., and the compounds were reacted with each other for 2 hours. Then, the mixture was heated to 160 ° C. over about 2 hours while dehydrating to complete the reaction. The viscosity of the obtained epoxy resin curing agent component containing a Mannich addition reaction product of m-xylylenediamine as a main component is 9%.
00 mPa. s / 25 ° C., amine value 495 mg KOH /
g. This was taken out into a 2 L can with a lid.

To 100 parts by weight of Epicoat 828 (manufactured by Yuka Shell Epoxy Co., Ltd.) as an epoxy resin, 50 parts by weight of an epoxy resin curing agent having a Mannich addition reaction product of m-xylylenediamine as a main component were uniformly mixed. Further, this mixture was diluted with a mixed solvent of toluene / MEK (weight ratio 1: 2) to a resin concentration of 30% by weight to obtain a diluted coating resin.

The obtained diluted coating resin was applied to the CFRP-processed surface treated in the same manner as in Example 1 using a brush, and the applied resin was cured in a drying oven at 60 ° C. for 1 h. There was no coating unevenness or unevenness on the application surface, and the application surface was sufficiently wiped with a dust-free clean cloth (polyester knit) impregnated with ethanol, but no stain was observed on the CFPR application surface and the clean cloth.

(Comparative Example 1) Modified epoxy resin cured at room temperature @ Epicoat 828 (manufactured by Yuka Shell Epoxy Co., Ltd.) /
FXK-825 (trade name, aliphatic amine-modified epoxy resin curing agent manufactured by Fuji Kasei Co., Ltd.) = 100/40 weight ratio}
Was diluted with a mixed solvent of toluene / MEK (weight ratio 1: 2) to a resin concentration of 30 wt% to obtain a diluted resin. The diluted resin was applied to the CFRP-processed surface in the same manner as in the example using a brush and allowed to stand for one day. The applied diluent resin hardened sufficiently, but the coated surface was wiped sufficiently with a dust-free clean cloth (polyester knit) soaked in ethanol.
The coated surface swelled and became sticky, and dust easily adhered to the clean cloth. This means that the conveyed precision equipment materials and the like are contaminated.

[0050]

According to the transfer member made of CFRP of the present invention, there is no contamination of the precision equipment material caused by carbon fiber, and the original performance of the transfer member made of CFRP, which is lightweight and has high rigidity, can be sufficiently exhibited. And CFR of the present invention.
According to the processing method of the transfer member made of P, the member surface after the application of the coating resin is smooth, and the transfer member does not warp or deform, and the member is coated even after being attached to the transfer robot. Can be processed.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Aoyagi 8 Chidori-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Central Research Laboratory, Nishiishi Mitsui Co., Ltd. (72) Inventor Daisuke Uchida 8 Chidori-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Address F-term (reference) at Mitsui Nishiishi Co., Ltd. Central Research Laboratory 4F006 AA53 AB24 AB34 AB37 AB39 BA02 BA09 DA04 5F031 CA02 CA05 EA04

Claims (2)

[Claims] 1. Resistance to polar solvents and 70 ° C.
A conveying member made of CFRP, wherein a processed surface is covered with a resin that cures at a low temperature as described below. 2. The method according to claim 1, wherein the resin is diluted to 5 to 60% by weight with a solvent, and the resin is heated and cured at a temperature of 70 ° C. or less. A method for treating a CFRP transporting member.