Salt bath-vulcanized ethylene propylene terpolymer cable sheath material

Abstract

The invention discloses a salt bath-vulcanized ethylene propylene terpolymer cable sheath material, which is prepared from the following raw materials in parts by weight: 80-100 parts of ethylene propylene terpolymer, 30-50 parts of SPVHA carbon black, 20-30 parts of N774 carbon black, 20-40 parts of nano-silicate, 20-40 parts of high flashpoint paraffin oil, 3-7 parts of zinc oxide, 1 part of stearic acid, 0.8 part of sulfur, 1-6.5 parts of an accelerator, 1-2 parts of a 2246 anti-aging agent and 1-8 parts of an RN75 antistatic agent. The vulcanization speed is improved due to adoption of high ENB-content ethylene propylene terpolymer; a cable sheath is not foamed in the salt bath vulcanization process; the used SPVHA high-purity carbon black is low in impurity; the cable sheath is free of particle on the surface; the resistance performance of the sheath is improved through addition of the nano-silicate; the use security is improved; and by using the imported environment-friendly high flashpoint paraffin oil, no smoke is generated in the vulcanization process and the processing property is improved.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a salt-bath vulcanized EPDM cable sheathing material. Background technique [0002] EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It is a kind of ethylene-propylene rubber. It has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in wire and cable protection. In the field of sheathing, the existing cable sheath materials have high processing costs and are not excellent in overall performance. Therefore, it is particularly important to solve such problems. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a salt-bath vulcanized EPDM cable sheath material to improve the performance of the cable sheath as a whole. [0004] In order to solve the above problems, the present invention provides a salt bath vulcan...

AI Technical Summary

Problems solved by technology

[0002] EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It is a kind of ethylene-propylene rubber. It has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance. It can be widely used in wire and cable protection. In the field of sheathing, the existing cable sheath materials have high processing costs and the overall performance is not excellent enough. Therefore, it is particularly important to solve this type of problem