Medium-voltage low-smoke halogen-free flame-retardant silicone rubber insulating material and its manufacturing process
A technology of silicone rubber insulation and manufacturing process, which is used in rubber insulators, organic insulators, etc. to achieve excellent electrical insulation performance, good elasticity, and good process performance.
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[0035] In specific implementation, the medium-voltage grade low-smoke halogen-free flame-retardant silicone rubber insulating material according to the present invention is composed of raw materials in parts by mass as listed in Table 1:
[0036] Table 1 Component ratio of medium-voltage low-smoke halogen-free flame-retardant silicone rubber insulating material
[0037]
[0038]
[0039] In the specific implementation, the raw methyl vinyl silicone rubber is 110-2 type, the vinyl mole fraction is 0.10-0.15%, and the weight-average relative molecular weight is 460,000-600,000; the white carbon black is produced by the gas phase process; the crosslinking agent It is 2,5-dimethyl-2,5 di-tert-butylperoxyhexane DBPMH or 2,4-dichlorobenzoyl peroxide DCBP or dicumyl peroxide DCP; the structure control agent is diphenyl Silicone glycol, hydroxyl silicone oil or a combination thereof; the coupling agent is a silane coupling agent, an alkoxy titanate coupling agent, a pyrophosphor...
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