Mixing silicone rubber with kneader can improve production efficiency and working environment, and its basic supporting technology. In order to remove water and other volatiles from silicon dioxide and promote the dispersion and infiltration between raw silicone rubber and silicon dioxide, the temperature should be 150~ 180 after adding silicon dioxide and structure control agent. Lower heat treatment1~ 6h; Then further mixing on a double-roll machine, and adding a modifier; Finally, the impurities in the rubber compound are removed by filtration.
It has excellent thermal stability, high and low temperature resistance, long-term working at -60℃ ~+250℃, ozone resistance, weather resistance, good electrical performance, strong corona, arc and spark resistance, good chemical stability, weather aging resistance, radiation resistance, physiological inertia and good air permeability.
Can be widely used in aviation, cable, electronics, electrical appliances, chemicals, instruments, cement, automobiles, construction, food processing, medical equipment and other industries, for deep processing of molding, extrusion and other machinery.
Addition-type liquid silicone rubber is mainly based on polydimethylsiloxane containing terminal vinyl group, polydimethylsiloxane containing dimethyl chain and methyl hydrogen chain as crosslinking agent and platinum complex as crosslinking catalyst. In the presence of catalyst, silicone rubber with network structure can be obtained by addition reaction of rubber mixture at room temperature or heating.
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