A kind of high tear-resistant silicone rubber nanocomposite and preparation method thereof

Abstract

The invention discloses a preparation method of a silicone rubber nano composite with the high tear resistance. The composite is prepared from, by weight, 100 parts of silicone rubber, 3-10 parts of carbon nano tubes, 30-50 parts of fumed silica, 3-6 parts of hydroxyl silicone oil, 0.5-3.5 parts of vulcanizing agents and 0.2-0.8 part of interface agents. According to the silicone rubber nano composite with the high tear resistance and the preparation method thereof, by selecting and using the interface agents, the problems that when the carbon nano tubes serve as reinforcing fillers, the carbon nano tubes are unevenly dispersed in the silicone rubber, and the interfacial action of the carbon nano tubes and the silicone rubber is weak are solved, and the tearing property of the silicone rubber nano composite is significantly improved.

Description

technical field

[0001] The invention relates to a high-tear-resistant silicone rubber nanocomposite and a preparation method thereof, belonging to the technical field of silicone rubber. Background technique

[0002] Silicone rubber is a linear polysiloxane polymer elastomer whose main chain is composed of -Si-O- and side chains are composed of organic groups. Due to its unique main chain composition, it has high and low temperature resistance, ozone resistance, and Radiation, electrical insulation, good biocompatibility, high air permeability, physiological inertia and other advantages, so silicone rubber is used in aerospace, chemical instrumentation, agriculture, medical and health, and electronic and electrical industries. However, the strength of silicone rubber is very poor, especially the tear strength is very poor, which greatly limits the application of silicone rubber. Therefore, improving the strength of silicone rubber, especially the tear strength, so that the ...

Images