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Condensation type RTV silicone rubber composition with matte surface, its preparation method and application

A technology of silicone rubber composition and condensed silicone rubber, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of long matte time and high gloss, and achieve short matte time, good storage stability, and matte Excellent effect of light effect

Active Publication Date: 2012-11-28
兆舜科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its matte time is longer, and the gloss is still high

Method used

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  • Condensation type RTV silicone rubber composition with matte surface, its preparation method and application
  • Condensation type RTV silicone rubber composition with matte surface, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A matte condensation type silicone rubber composition, characterized in that the silicone rubber composition is composed of three components A, B and C;

[0050] Component A includes by weight: 107 silicone rubber (viscosity 50000cps) 80, heavy calcium carbonate 110, methyl silicone oil (viscosity 50cps) 40, hydroxyl silicone oil (viscosity 150cps) 5, carbon black 1;

[0051] Component B includes by weight: ethyl orthosilicate 2, γ-aminopropyltriethoxysilane 1, methyl silicone oil (viscosity 50cps) 20, dibutyltin dilaurate 0.05;

[0052] Component C includes by weight: 0.5 linseed oil.

Embodiment 2

[0054] A matte condensation type silicone rubber composition, characterized in that the silicone rubber composition is composed of three components A, B and C;

[0055] Component A includes by weight: 107 silicone rubber 120 (viscosity 1500cps), light calcium carbonate 20, methyl silicone oil (viscosity 500cps) 80, hydroxyl silicone oil (viscosity 5cps) 10, carbon black 5;

[0056] Component B includes by weight: 15 propyl orthosilicate, 8 gamma-(methacryloyloxy)propyltrimethoxysilane, 35 methyl silicone oil (viscosity 500 cps), 0.6 dioctyltin dilaurate;

[0057] Component C includes: tung oil 5 in parts by weight.

Embodiment 3

[0059] A matte condensation type silicone rubber composition, characterized in that the silicone rubber composition is composed of three components A, B and C;

[0060] Component A includes by weight: 107 silicone rubber 100 (viscosity 25000cps), talcum powder 60, methyl silicone oil (viscosity 250cps) 5, hydroxyl silicone oil (viscosity 250cps) 1, carbon black 10;

[0061] Component B includes by weight parts: methyl trimethoxysilane 10, N-β-aminoethyl-γ-aminopropyl trimethoxysilane 5, methyl silicone oil (viscosity 250cps) 5, dilauric acid di Butyl tin and dioctyl tin dilaurate 0.3;

[0062] Component C includes: castor oil 2.5 parts by weight.

[0063] The preparation method of the silicone rubber composition described in embodiment 1-3 is:

[0064] Separate the three components A, B and C, mix them at room temperature to form a soft silicone elastomer through condensation and crosslinking, in which the matting agent is hydrolyzed under the action of moisture in the air t...

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Abstract

The invention relates to a condensation type RTV silicone rubber composition with a matte surface. The composition is composed of three components: A, B and C. Specifically, component A comprises, by weight part: 80-120 of 107 silicone rubber, 20-110 of a filling material, 5-80 of a plasticizer, 1-10 of hydroxy silicone oil, and 1-10 of an inorganic pigment; component B comprises, by weight part: 2-15 of a crosslinking agent, 1-8 of a silane coupling agent, 5-35 of the plasticizer, and 0.05-0.6 of a catalyst; and component C comprises, by weight part: 0.5-5 of a matt agent. The silicone rubber provided in the invention has good storage stability and excellent matte effect, can be widely applied in maskless LED display screen module potting, and effectively reduces the production cost. After using the silicone rubber, the glossiness can be reduced to less than 0.5Gs (60DEG C), and the matte effect is very excellent.

Description

technical field [0001] The invention relates to a two-component condensation type silicone rubber composition, in particular, the invention relates to a condensation type silicone rubber composition with matte surface. Background technique [0002] Room temperature vulcanized silicone rubber is a new type of silicone elastomer that came out in the 1960s. The most notable feature of this rubber is that it can be cured at room temperature without heating or pressure, and it is extremely convenient to use. Therefore, as soon as it came out, it quickly became an important part of the entire silicone product. Now room temperature vulcanized silicone rubber has been widely used as adhesives, sealants, protective coatings, potting and molding materials, and is found in all walks of life. its use. Room temperature vulcanized silicone rubber is known as liquid silicone rubber because of its low molecular weight. Its physical form is usually a flowable fluid or viscous paste, and its...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08K13/02C08K5/103C08J3/24H01L33/56
Inventor 陈芳朱喜豪张辉
Owner 兆舜科技(广东)有限公司
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