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Two-component dual-cure silicone compound

A dual-curing, silicone technology, used in adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of difficult and fast deep curing and worrying storage stability.

Active Publication Date: 2021-05-25
富乐(苏州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent CN105348813A proposes a moisture-heat-curable one-component silicone, but it is difficult to achieve rapid deep curing under normal temperature and humidity conditions, and its storage stability is worrying

Method used

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  • Two-component dual-cure silicone compound
  • Two-component dual-cure silicone compound
  • Two-component dual-cure silicone compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Component A consists of 100 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 10000mPa·s and a vinyl content of 0.15%, and 10 parts of a silicon hydrogen group-containing polydimethylsiloxane with a viscosity of 1000mPa·s and a hydrogen content of 0.2%. Methyl polysiloxane, 50 parts of light calcium carbonate, 8 parts of methyltrimethoxysilane, 1 part of bis(3-trimethoxysilylpropyl)amine.

[0032] Component B consists of 100 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 3000mPa·s, 10 parts of carbon black, 0.5 parts of ethynyl cyclohexanol, and 4 parts of tetramethyldichloroplatinic acid with a platinum content of 2000ppm. Vinyl disiloxane complex, 0.5 part moisture.

[0033] The weight ratio of A component and B component is 1.1:1, and the volume ratio is 1:1.

[0034] The mixture is heated at 100°C for 10 minutes to form a silicone rubber elastomer and bond simultaneously. It has cohesive bonding failure for aluminum alloy and...

Embodiment 2

[0039] Component A consists of 100 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 20000mPa·s and a vinyl content of 0.10%, and 20 parts of a silicon hydrogen-containing polydimethylsiloxane with a viscosity of 5000mPa·s and a hydrogen content of 0.15%. Methylpolysiloxane, 100 parts of alumina powder, 6 parts of ethyltrimethoxysilane, 1 part of N-n-butylaminopropyltrimethoxysilane.

[0040] Component B consists of 100 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 5000mPa·s, 50 parts of heavy calcium carbonate, 0.4 parts of 2-ethyn-1-ol, and 8 parts of chloroplatinic acid with a platinum content of 2000ppm Tetramethyldivinyldisiloxane complex, 1 part moisture.

[0041] The weight ratio of A component and B component is 2.3:1, and the volume ratio is 2:1.

[0042] The mixture is heated at 120°C for 5 minutes to form a silicone rubber elastomer, which has cohesive bonding failure to aluminum alloy, stainless steel and other metal materi...

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Abstract

The present invention proposes a two-component dual-curing silicone compound, which is composed of A component and B component. The A component includes vinyl-containing polydimethylorganosiloxane, silicon hydrogen-containing methyl base polysiloxane and crosslinking agent; B component includes hydroxyl-terminated polydimethylsiloxane, platinum catalyst; the weight ratio of A component and B component is 1:1 to 10:1. The two-component double vulcanized silicone rubber composition proposed by the present invention can be quickly vulcanized into a silicone rubber elastomer under heating conditions, can have good adhesion to the substrate, and achieve cohesive failure, and the adhesion strength is ≥ 1.0MPA; Under normal temperature and humidity conditions, it also has the same vulcanization speed and rapid adhesive force as the two-component room temperature vulcanizing silicone rubber. And the ratio of component A and component B can be changed within a certain range to adjust the vulcanization speed, and the ratio can be adjusted according to the customer's on-site working conditions to meet customer needs.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to an organosilicon compound. Background technique [0002] Silicone rubber is divided into condensation type and addition type according to the vulcanization reaction mechanism; condensation type silicone rubber is divided into deacidification type, deoxime type, dealcoholization type, deamination type, deamidation type and deacetone type according to the type of vulcanization reaction products. And many other varieties. Addition-type silicone rubber does not generate small molecular substances during the vulcanization reaction. Condensed silicone rubber is divided into one-component room temperature vulcanized silicone rubber and two-component room temperature vulcanized silicone rubber; the vulcanization time of one-component room temperature vulcanized silicone rubber depends on the vulcanization system, temperature, humidity and the thickness of the silicone rubber layer. The tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J183/06C09J11/04C09J11/06
CPCC08K2003/2227C08K2003/265C08L2205/025C08L2205/03C09J11/04C09J11/06C09J183/04C08L83/04C08L83/06C08K13/02C08K3/26C08K3/04C08K5/5419C08K5/544C08K3/22
Inventor 潘换明师力
Owner 富乐(苏州)新材料有限公司