Heat-resistant aging-resistant plastic for junction box of SF6 density relay

Abstract

The invention discloses heat-resistant aging-resistant plastic for a junction box of an SF6 density relay. The heat-resistant aging-resistant plastic is prepared from, by weight, 30-60 parts of ethylene-vinyl acetate copolymers, 20-35 parts of polytrifluorochloroethylene, 20-35 parts of acrylate rubber, 15-35 parts of polyarylate, 0.5-2.5 parts of dicumyl peroxide, 1.5-3 parts of diethylenetriamine, 0.5-1.2 parts of 2-hydroxy triethylamine, 0.5-1.5 parts of cerium oxide, 0.8-1.4 parts of praseodymium chloride, 1-2 parts of stearic acid, 0.5-1.4 parts of epoxidized soybean oil, 5-15 parts of ceramic fibers, 30-50 parts of superfine modified kaolin, 10-20 parts of precipitated calcium carbonate, 5-15 parts of gypsum, 10-18 parts of nano silicon dioxide, 1.2-1.8 parts of an anti-aging agent CPPD, 1.5-2.5 parts of an anti-aging agent RD and 1.5-2.5 parts of bis(3,5-tert-butyl-4-hydroxy phenyl)thioether. The heat-resistant aging-resistant plastic is excellent in heat resistance, aging resistance and mechanical property.

Description

technical field [0001] The invention relates to the technical field of SF6 density relay junction box shells, in particular to a heat-resistant and aging-resistant plastic for SF6 density relay junction boxes. Background technique [0002] SF6 gas density relay is used to monitor and control the density of protective gas SF6 in high voltage power equipment. It is widely used in high-voltage circuit breakers, medium-voltage switches, gas-insulated equipment, high-voltage cables, transformers and transformers. It should be able to adapt to outdoor harsh environment spare parts, and issue alarm signals in time for the leakage of SF6 gas in electrical equipment. , blocking signal or overvoltage signal to ensure the safe operation of electrical equipment, but the current heat resistance, aging resistance and mechanical properties of the SF6 density relay junction box shell can not meet the needs. SUMMARY OF THE INVENTION [0003] The invention proposes a heat-resistant and agi...

AI Technical Summary

Problems solved by technology

It is widely used in high-voltage circuit breakers, medium-voltage switches, gas-insulated equipment, high-voltage cables, transformers and transformers. It should be able to adapt to outdoor harsh environmental spare parts, and send out alarm signals in time for the leakage of SF6 gas in electrical equipment. , blocking signal or overpressure signal to ensure the safe operation of electrical equipment, but the heat resistance, aging resistance and mechanical properties of the SF6 density relay junction box shell can not meet the demand