Low-shrinkage silane cable material and preparation method thereof

Abstract

The invention discloses a low-shrinkage silane cable material and a preparation method thereof. The cable material comprises the following components in parts by weight: 100 parts of polyethylene resin, 3-10 parts of ethylene-propylene copolymer resin, 1-5 parts of ethylene-octene copolymer resin, 1-5 parts of silane cross-linking agent, 0.02-0.05 part of initiating agent and 4-10 parts of catalytic masterbatch, wherein the catalytic masterbatch further comprises the following components in parts by weight: 100 parts of polyethylene resin, 0.5-1 part of low temperature catalyst, 1-2.5 parts ofantioxidant, and 0.5-1 part of lubricant. The cable material can effectively solve the problems of an existing cable material that in the production of the cable, the shrinkage rate is large, the production efficiency is low, the rejection rate is high, and the energy consumption is large.

Description

technical field

[0001] The invention relates to the technical field of cable materials, in particular to a low-shrinkage silane cable material and a preparation method thereof. Background technique

[0002] When cable factories use silane cross-linked polyethylene insulation materials to produce cables, they usually use extrusion dies and extruded tube dies for production. Because extruded tube dies have the advantages of simple operation and high production efficiency compared with extruded dies, they have become the most popular cable The first choice of manufacturers, especially in the production of irregular cables, extrusion die is irreplaceable. However, when the extrusion die is used to produce silane cross-linked polyethylene insulated cables, the stretching ratio is relatively large, and the faster stretching speeds up the crystallization between polyethylene molecules, which increases the shrinkage of cross-linked polyethylene; at the same time, silane cross-linkin...

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