Long-life high-resilience liquid silica gel

Abstract

The invention relates to long-life high-resilience liquid silica gel, and belongs to the field of liquid silica gel. Comprising the following raw material components: a component A and a component B, and the weight ratio of the component A to the component B is (0.95-1.05): 1; the component A comprises the following raw materials in parts by weight: 98-99 parts of base rubber and 1-2 parts of a catalyst; the component B comprises the following raw materials in parts by weight: 98-99 parts of base rubber and 1-2 parts of a cross-linking agent; the base rubber is prepared from the following raw materials in parts by weight: 110 to 130 parts of a dimethyl siloxane mixed ring body, 12 to 15 parts of a silazane surface treating agent, 8 to 10 parts of aluminum oxide, 8 to 10 parts of dipropylene glycol dimethyl ether, 1.8 to 2.3 parts of oleamide and 7.5 to 9.5 parts of a reinforcing agent. The liquid silica gel provided by the invention has good strength and flexibility, good thermal conductivity and aging resistance, and has excellent service life when being applied to silica gel keys.

Description

Technical field [0001] The present invention relates to the field of liquid silica gel, in particular to a high life high resilience liquid silica gel. Background [0002] Key caps are often used parts in the electronics industry, and according to different equipment needs, there are many choices of key cap materials, of which silicone material key caps are more common, mostly used in remote controls, electronic toys, calculators and other electronic products. [0003] Different from the computer's mechanical keyboard using springs to achieve rebound keys, silicone keys are generally the use of silicone deformation recoverability material characteristics to achieve rebound, which means that the quality of silicone is the decisive factor that determines the service life of the keys. [0004] At present, the ordinary silicone buttons on the market are generally 1 million times, and the domestic high-quality silicone keys can rarely do more than 10 million times, especially used in ...

AI Technical Summary

Problems solved by technology

[0004] At present, the hitting life of ordinary silicone keys on the market is generally 1 million times, and domestic high-quality silicone keys can rarely achieve more than 10 million times, especially for equipment used in environments with high operating temperatures. Silicone keypads have long relied on imports. Therefore, the domestic market urgently needs a high-life silicone keypad material for assembly and production in the electronics industry.

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