Trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber

Abstract

The invention discloses a trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber. The trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber comprises following steps: OVPOSS nanometer material is dried to remove water; a double-roller mixing mill roller is heated, roller distance and blocking plate distance are adjusted, terpolymer ethylene propylene rubber is introduced into the double-roller mixing mill roller for mix milling, an obtained product is taken out from the double-roller mixing mill roller, and the double rollers are washed; terpolymer ethylene propylene raw rubber is introduced for mix milling and roll banding; OVPOSS nanometer is added into terpolymer ethylene propylene rubber matrix for mix milling; 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane is weighed, and is introduced into the double-roller mixing mill for mix milling so as to obtain an unvulcanized rubber material; the unvulcanized rubber material is taken out from the double-roller mixing mill, is placed between two layers of PET film, is introduced into a high temperature hot processing forming machine die for hot pressing, and obtained rubber sheets are taken out from the high temerpature hot processing forming machine die after cooling; the rubber sheets are suspended in an air blast baking oven, sulfuration is carried outso as to obtain modified terpolymer ethylene propylene rubber sample sheets; the functional group composition and section morphology of the modified terpolymer ethylene propylene rubber sample sheetsare analyzed; rubber sample sheet surface potential attenuation characteristics are measured; SPD method is adopted to obtain trap distribution character diagram and charge mobility characteristics ofthe rubber.

Description

technical field [0001] The invention relates to a method for regulating traps of EPDM materials used in high-voltage DC cable accessories, and more specifically, relates to a method for regulating traps based on POSS modified EPDM rubber. Background technique [0002] Due to the development of my country's urban power grid and the implementation of the national new energy strategy, the use of AC and DC high-voltage cables in my country has increased year by year. Due to the late development of DC plastic cables and their accessories, their design, evaluation, production and installation technologies are all modeled after AC cables, and high-voltage DC cables need to withstand long-term unipolar strong electric fields. Due to electrode injection and impurity ionization, space charges are easily accumulated inside and at the interface of the polymer insulation, causing local field distortion, insulation material aging, partial discharge, and even insulation breakdown. Studies...

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Problems solved by technology

[0004] The purpose of the invention is in order to overcome the deficiencies in the prior art, propose a kind of trap control method based on POSS modified EPDM, can solve the problem of the EPDM material trap of high-voltage power cable accessories, give Relevant key parameters are of great significance to the development of AC and DC cable technology

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