Ceramicized silicon rubber, preparation method and application
A technology of ceramicizing silicone rubber and silicone rubber, which is applied in rubber insulators, plastic/resin/wax insulators, organic insulators, etc., can solve the problems of falling off, brittle mica tapes, and high production costs, and achieve good flexibility and elasticity. , The effect of isolating the external flame and low production cost
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preparation example Construction
[0071] The ceramic silicone rubber of the present invention has two kinds of preparation methods, and the first preparation method comprises:
[0072] ① Knead 60-100 parts of silicone rubber, 20-100 parts of silicon dioxide, 1-20 parts of silicone oil, and 0.1-10 parts of coupling agent in a kneader at a temperature not higher than 100 ° C;
[0073] ② Vacuum the kneader for 60 minutes, the vacuum degree can be -0.065Mpa, and the temperature is kept at no higher than 165°C;
[0074] ③ Add 20-120 parts of vitrified powder into the kneader to knead the vitrified powder with the kneaded silicone rubber, silicon dioxide, silicone oil and coupling agent evenly to form a lump of vitrified rubber;
[0075] ④ Move the lumpy ceramic rubber out of the kneader and cool it down;
[0076] ⑤ kneading the cooled lump-like ceramic rubber on an open mill to cut the ceramic rubber into flakes from the dough;
[0077] ⑥Filter the flaky ceramic rubber into strips on a rubber filter machine to ob...
Embodiment approach 1
[0094] Embodiment 1: Take 60 parts of dimethyl silicone rubber (MQ), 20 parts of silicon dioxide, 1 part of methyl silicone oil, 0.1 part of KH560, 20 parts of silicate glass powder and 1 part of 2,5-dimethyl- 2,5-bis(tert-butylperoxy)hexane, according to the first preparation method of ceramic silicone rubber above, ceramic silicone rubber is prepared, and when ceramic silicone rubber is vulcanized, add 1 part of 2,5 -Dimethyl-2,5-bis(tert-butylperoxy)hexane.
Embodiment approach 2
[0095] Embodiment 2: Take 100 parts of methylphenyl vinyl silicone rubber (PVMQ), 100 parts of silicon dioxide, 20 parts of hydroxyl silicone oil, 10 parts of OL~T671, 120 parts of borate glass powder and 5 parts of diisoperoxide Propylbenzene (commonly known as DCP), according to the second preparation method of ceramic silicone rubber, ceramic silicone rubber is obtained, and 5 parts of dicumyl peroxide are added when the ceramic silicone rubber is vulcanized and molded.
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