Composite rubber for ignition motor and preparation method thereof
A compound rubber and engine technology, applied in the rubber field, can solve the problems of long preparation time, uneven performance of rubber products, uneven mixing, etc., and achieve the effects of reducing the risk of raw material aging, high promotion and application value, and increasing preparation efficiency.
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preparation example Construction
[0014] The present invention provides a method for preparing composite rubber for ignition engines. The method includes the following steps: (1) mixing ceramic fibers with a silane coupling agent to obtain a pretreatment enhancer; (2) combining polyvinyl acetate, The first solvent, fluororubber, carbon black, pretreatment enhancer, zinc oxide, molybdenum-based catalyst and anti-aging agent are subjected to a banbury, and then stand; (3) Add the second solvent to the primary banbury after standing; The white carbon black and the vulcanizing agent are subjected to secondary banburying; (4) The total amount of solvent formed by the first solvent and the second solvent is used as 100%, and the secondary banburying material is flashed to remove 70-90% of the solvent (5) The flash-vaporized secondary banbury material is rolled and cut to make a film, which is extruded into molding and microwave vulcanized; among them, the white carbon black has a particle size range of 200 mesh to 400...
preparation example 1
[0041] The ceramic fiber and the silane coupling agent were mixed for 50 minutes at 180°C and the rotation speed was 800 rpm. The weight ratio of the ceramic fiber to the silane coupling agent was 1:1, and the silane coupling agent was a mixture of KH550 and KH570. The weight ratio of KH550 and KH570 is 1:2 to obtain a pretreatment enhancer.
preparation example 2
[0043] The ceramic fiber and the silane coupling agent were mixed for 30 minutes at a speed of 500 rpm at 120°C. The weight ratio of the ceramic fiber to the silane coupling agent was 1:3, and the silane coupling agent was a mixture of KH550 and KH570. The weight ratio of KH550 and KH570 is 1:3, and the pretreatment enhancer is obtained
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Abstract
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