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期刊专利论文

高粘性单组分脱肟型室温硫化硅橡胶密封胶及制备方法

来源:互联网2015年12月16日

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HIGH-ADHESIVE ONE-COMPONENT DEOXIMATION TYPE ROOM-TEMPERATURE VULCANIZED SILICONE RUBBER SEALANT AND PREPARATION METHOD THEREFOR

Priority number(欧洲专利号): WO2015158257

 

Abstract:A high-adhesive one-component deoximation type room-temperature vulcanized silicone rubber sealant comprises the following components (A) to (F) in parts by weight: 100 parts of modified α,ω-dihydroxylpolydimethylsiloxane (A), 10 to 30 parts of dimethyl silicon oil (B), 7 to 12 parts of a deketoxime crosslinking agent (C), 1 to 5 parts of a silane coupling agent (D), 50 to 150 parts of a reinforcing filler (E), and 0.1 to 1 part of a catalyst (F). Compared with a conventional deoximation type sealant, the provided sealant has excellent adhesiveproperty, particularly for some base materials such as plastics and modified resin which are difficult to be adhered by using an organic silicon adhesive, and can be widely applied to adhesion and sealing of industries such as electronics, automobiles, and household appliances. Modified polydimethylsiloxane is used as a basic polymer in deoximation type silicon rubber, so that the sealant has relatively proper surface drying time, provides more reasonable operation time, and meets the production pace requirement under different working conditions. In addition, due to the adoption of the modified polydimethylsiloxane, the sealant has excellent waterproofness and has a high strength retention rate under high temperature and high humidity conditions.

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