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High-bond easy-to-storage one-component addition-type liquid silicone rubber

A liquid silicone rubber, one-component technology, applied in the field of preparation of modified one-component addition silicone elastomer, can solve the problems of difficult storage at room temperature, small linear shrinkage of vulcanized rubber, poor adhesion, etc., to achieve improved Effects of storage, inhibition of catalytic activity, and improvement of adhesion

Inactive Publication Date: 2018-07-24
湖南利德电子浆料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because addition-type silicone rubber has excellent electrical insulation, hydrophobicity and weather resistance, and the linear shrinkage rate of vulcanized rubber is small, it is widely used in electronic appliances and components. The existing one-component addition-type silicone rubber is commonly used for bonding Problems such as poor performance and difficult storage at room temperature need to be studied and improved

Method used

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  • High-bond easy-to-storage one-component addition-type liquid silicone rubber
  • High-bond easy-to-storage one-component addition-type liquid silicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0021] Component A: vinyl polysiloxane with a viscosity of 2500mpa.s

[0022] Component B: Hydrogen-containing polysiloxane with a viscosity of 15mpa.s

[0023] Component C: Methacryloxyhydroxyl silicone oil

[0024] Component D: Aluminum oxide and magnesium oxide mixture

[0025] Component E: Aminopolysiloxane Coordinated Thermosensitive Platinum Complex

[0026] Component F: Platinum complex coordinated with methylvinylsiloxane

[0027] Component G: Triphenyl Phosphate

[0028] Component H: Silicone carboxylate

[0029] Table 1: Composition (by weight percentage) of embodiment 1~5 composition

[0030]

[0031] Table 2: Evaluation results of the compositions of Examples 1-7

[0032]

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Abstract

The invention provides high-bond easy-to-store one-component addition-type liquid silicone rubber comprising 22-40% by mass of vinyl polysiloxane, 5-15% by mass of modified silicone oil, 13-20% by mass of hydrogen-containing polysiloxane, 0.01-0.4% by mass of a platinum catalyst, 0.01-0.2% by mass of a special inhibitor, 45-60% by mass of a filler and 0.1-5% by mass of an additive. The high-bond easy-to-store one-component addition-type liquid silicone rubber comprises special acryloyloxy-hydroxy modified silicone oil which imparts special adhesion and weather resistance, and the high-bond easy-to-store one-component addition-type liquid silicone rubber comprises a metal ion compound and a phosphorus-based catalytic inhibitor which greatly improve the room temperature storage capacity andshelf life of the silicone rubber. The high-bond easy-to-store one-component addition-type liquid silicone rubber comprises special additive organosilicon carboxylate which improves the storage performance in a humid environment.

Description

technical field [0001] The invention relates to the technical field of silicone rubber design, and specifically relates to the preparation of a modified one-component addition silicone elastomer. Background technique [0002] Addition-type liquid silicone rubber uses polymethylvinylsiloxane as the base rubber, polymethylhydrogensiloxane (hydrogen-containing silicone oil) as the crosslinking agent, and is carried out at room temperature or with a little heating under the action of a platinum catalyst. Hydrosilylation reaction to form a three-dimensional network elastomer. Because addition-type silicone rubber has excellent electrical insulation, water repellency and weather resistance, and the advantages of small linear shrinkage of vulcanized rubber, it is widely used in electronic appliances and components. Problems such as poor performance and difficult storage at room temperature need to be studied and improved. Contents of the invention [0003] In view of the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08L83/06C08L83/08C08K13/02C08K3/22C08K5/523C08K5/5419
CPCC08L83/04C08L2203/20C08L2205/02C08L2205/025C08L2205/035C08L83/06C08L83/08C08K13/02C08K2003/2227C08K2003/222C08K5/523C08K5/5419
Inventor 刘飘宁天翔宁文敏胡蔚
Owner 湖南利德电子浆料股份有限公司
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