Copolymerized high-performance damping silicon rubber and preparation method thereof
A high-performance, silicone rubber technology, applied in the field of functional polymer materials, can solve the problems of poor high and low temperature resistance, increased modulus change, unfavorable damping performance, etc., to achieve good mechanical properties and durability, easy processing, The effect of superior vibration damping performance
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[0057] The preparation method of copolymerized high-performance damping silicone rubber comprises the following steps:
[0058] 1. Purification of methylphenyldichlorosilane
[0059] In parts by weight, add 100 parts of industrial-grade methylphenyldichlorosilane into a reactor with a stirrer and a thermometer. Prepare the mixed solution by weight ratio, drop it into the above reactor under stirring, keep stirring for 1-2 hours after the mixed solution is added dropwise, and then distill and purify at a temperature of 190-205°C to obtain a methylphenyldichlorosilane liquid with a purity of Increased from 35wt% to 93.6-96.7wt%;
[0060] 2. Preparation of mixed rings containing methylphenylsiloxane
[0061] Mix the above-mentioned purified methylphenyldichlorosilane with a 40wt% toluene aqueous solution at a volume ratio of 1 to 3:1 to form a solution, and add it dropwise to a 10 to 20wt% HCl aqueous solution under stirring for hydrolysis. The temperature is 10-30°C. After a...
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