Conductive nitrile rubber and preparing method thereof

Abstract

The invention relates to the field of conductive rubber, in particular to a conductive nitrile rubber and a preparation method thereof. The conductive nitrile rubber is composed of the following raw materials in parts by weight: 80-110 parts of nitrile rubber, 22-28 parts of nano-rectorite , 10-15 parts of expanded graphite, 4-6 parts of carbon nanotubes, 18-22 parts of silver-plated copper powder, 4-6 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-3 parts of titanate coupling agent , 2‑3 parts of dicumyl peroxide, 2‑3 parts of magnesium dimethacrylate, 2‑3 parts of tetramethylthiuram disulfide, 0.5‑1 part of sulfur, CuSO 4 5-8 parts of powder, 2-4 parts of modified nano-silicon nitride, nano-SiO 2 0.5-1 parts, N, N'-di-sec-butyl-p-phenylenediamine 1.5-3 parts, flame retardant 2-3 parts. The preparation method is simple and efficient, and mainly includes steps such as mixing and vulcanization. The conductive nitrile rubber of the invention not only meets the requirements of high strength and high conductivity, but also has good high temperature resistance, low temperature resistance, aging resistance and excellent mechanical properties.

Description

technical field [0001] The invention relates to the field of conductive rubber, in particular to a conductive nitrile rubber and a preparation method thereof. technical background [0002] According to the structure, conductive rubber can be divided into filling type and structural type. Since the preparation of conductive polymer is very complicated and cannot be practically applied, structural conductive rubber has the most promising application prospect. It is made of elastomer as the base body plus conductive fillers, and has two functional materials: elastomer and conductivity. According to its actual application, the elastomer can be general-purpose rubber or special rubber such as polyurethane and silicone rubber, and the conductive fillers used include carbon and non-ferrous metals. At present, conductive rubber is widely used in electronics, telecommunications, electric power, military industry, aerospace, aviation and other fields. [0003] As a good conductive r...

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Problems solved by technology

Chinese patent CN104672544A discloses a "bamboo charcoal-based conductive rubber material". The conductive rubber has small resistivity, high conductivity and good shielding effect, but its high temperature resistance, aging resistance and mechanical properties still need to be further improved.

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