Method for producing fabric substrate molded product coated with silicone rubber, and artificial leather-like sheet molded product

A manufacturing method, technology of silicone rubber composition, applied in the direction of rubber layered products, chemical instruments and methods, textiles and papermaking, etc., can solve problems such as easy adhesion of foreign matter, surface adhesion, and failure to obtain surface sliding properties, and achieve adhesion Good performance and dust prevention effect

Active Publication Date: 2017-08-01
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although a high-strength, high-elongation coating film was obtained, surface slippage did not appear
By adding exudative siloxane, which is insoluble in dimethyl siloxane, such as phenyl group or polyoxyalkylene structure, although the ability to prevent biological adhesion is obtained, it is easy to become dust, burrs during molding, and foreign matter. direction of attachment
[0005] In addition, in the composition of JP-A-2004-143331, it has been studied to add fillers such as wet silica and dry silica in place of exudation components to impart surface irregularities, and to add a phenyl-terminated polymer. However, surface hardening, surface roughening by adding titanate, etc., did not achieve surface slipperiness, but instead caused disadvantages such as surface sticking and cracking.

Method used

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  • Method for producing fabric substrate molded product coated with silicone rubber, and artificial leather-like sheet molded product
  • Method for producing fabric substrate molded product coated with silicone rubber, and artificial leather-like sheet molded product
  • Method for producing fabric substrate molded product coated with silicone rubber, and artificial leather-like sheet molded product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] After the surface of the cloth base material made of PET fiber is coated with the following first liquid silicone rubber composition containing the adhesive-imparting component in an amount of 100 μm in thickness, it is dried in a dryer at 120° C. / 5 minutes. Medium heat curing.

[0167] Next, the second silicone rubber composition containing a silicone resin described below was coated on a release paper so as to have a thickness of 50 μm. The second silicone rubber composition layer coated on the release paper was bonded to the surface of the above-mentioned cloth base material on which the first liquid silicone rubber composition was coated and cured by heating. The laminated product was cured in a dryer at 120° C. / 5 minutes to obtain a PET fiber cloth base material on which silicone rubber was laminated.

[0168] [The first liquid silicone rubber composition]

[0169] Dimethyl polysiloxane (1-A1) with a viscosity of 30 Pa·s (average degree of polymerization about 75...

Embodiment 2

[0176] In the second silicone rubber composition, instead of the organopolysiloxane resin (2-B1), a compound made of (CH 3 ) 3 SiO 1 / 2 unit, (CH 2 =CH)(CH 3 ) 2 SiO 1 / 2 unit, SiO 4 / 2 Unit composition, molar ratio: (CH 3 ) 3 SiO 1 / 2 / (CH 2 =CH)(CH 3 ) 2 SiO1 / 2 / SiO 4 / 2 Organopolysiloxane resin (2-B2) with a three-dimensional network structure of 40 / 5 / 55 [number average molecular weight 5,000, vinyl content; 0.00027 mol / g] 100 parts [SiH group in (2-C1) / (2-A1) and the total vinyl group in (2-B2) = 6.9 mol / mol], a silicone rubber-laminated PET fiber cloth substrate was obtained in the same manner as in Example 1.

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Abstract

Provided is a method for producing a fabric substrate molded product coated with silicone rubber, wherein the adherence of dust, flashes during molding, and foreign matter is prevented because the obtained cured coating film has surface lubricity, and breaking and cracking do not occur when the fabric substrate is deformed because the obtained cured coating film has elongation. The method for producing a fabric substrate molded product coated with silicone rubber, in which method the surface of the fabric substrate is coated with a first coating layer and a second coating layer by forming a first coating layer, which comprises a cured product of a liquid silicone rubber composition, on at least one surface of the fabric substrate, and then forming a second coating layer, which comprises a cured product of a silicone rubber composition, on the outer surface of the first coating layer, is characterized in that the first coating layer is a cured product of a liquid silicone rubber composition that contains an adhesiveness-conferring component, and the second coating layer is a cured product of a silicone rubber composition that contains a silicone resin.

Description

technical field [0001] The present invention relates to a method for producing a silicone rubber-coated cloth base material that can be suitably applied to an artificial leather-like sheet molded product, and more particularly to a method for producing a silicone rubber-coated cloth base material. The surface of the cloth substrate is coated with a silicone rubber coating layer to give a cured coating film. The cured coating film can provide sliding properties to prevent dust and foreign matter from adhering, and it can follow the deformation of the molded product well without cracks on the surface. , cracking, and good adhesion; and an artificial leather-like sheet molding in which a silicone rubber coating layer is laminated on the surface of a cloth base material. Background technique [0002] There is a method of coating a silicone varnish to improve the surface tackiness of a molded article, but the surface of the coating film gives a glossy appearance, and its slipperi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/10B32B25/20C09D5/00C09D7/12C09D183/04C09D183/05C09D183/07D06M15/643D06N3/00
CPCB32B25/10B32B25/20C09D5/00C09D183/04D06N3/00C09D7/40D06N3/0034D06N2209/103D06N3/0038D06N2209/1635D06N2209/108D06N3/0088D06N3/0095D06N3/0097D06N3/128D06N2211/28D06N3/0036D06M15/643C09D7/61B32B5/02B32B37/025B32B2250/02B32B2255/02B32B2255/26B32B2262/0284B32B2307/51B32B2307/536B32B2307/746B32B2367/00B32B2383/00
Inventor 洪西宗黄伯正高名志五十岚实
Owner SHIN ETSU CHEM IND CO LTD
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