A high tear-resistant cable sheathing compound

Abstract

The invention provides a high-tearing resistance cable sheath material. The high-tearing resistance cable sheath material comprises, by weight, 100 parts of chlorinated polyethylene, 2-5 parts of a vulcanization agent, 1.5-3.5 parts of a vulcanization accelerator, 4-10 parts of an activator, 20-30 parts of a softener, 2-8 parts of a processing assistant, 4-12 parts of a stabilizing agent, 2.5-5 parts of an anti-oxidant, 6-12 parts of a fire retardant, 15-30 parts of white carbon black, 20-35 parts of StronWi<TM>, 10-25 parts of calcium carbonate and 0.5-0.8 parts of a pigment. The high-tearing resistance cable sheath material utilizes StronWi<TM> as a strengthening agent, adjusts a ratio of the vulcanization agent to the vulcanization accelerator and utilizes a polyester softener so that material tearing resistance is greatly improved and has the highest value of 9.6N / mm. Therefore, the high-tearing resistance cable sheath material is especially suitable for mining cables.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and in particular relates to a high tear-resistant cable sheath material. Background technique [0002] Due to its special use environment, mine cables are often hit, bumped and pressed by coal seams and rocks, which damages the cables and breaks the sheath. If the tear resistance of the sheath is not good, the breach is easy to extend, exposing the cable insulation and affecting the service life of the cable. In MT818.1-2009, it is clearly stipulated that the tear strength of the cable sheath material should not be lower than 5.0N / mm, and meeting this performance index can ensure the normal use of mine cables. [0003] Because of the unique advantages of chlorinated polyethylene (CPE), the actual production is often used as a resin base material for cable sheaths. When producing black sheaths, carbon black can be used as a pigment and a reinforcing agent at the same time. The special st...

AI Technical Summary

Problems solved by technology

[0005] This patent still has the following deficiencies: 1. select neoprene CR3222 as the rubber base material. At present, the price of this neoprene is about 225% of the price of CPE135B, resulting in expensive preparation costs; It is extremely easy to stick to the roller on the machine, which brings great difficulties to the mixing of rubber; ③The chloroprene rubber of this invention uses zinc oxide as the vulcanizing agent, and zinc oxide is used as the vulcanization of chloroprene rubber to easily cause scorch and cause losses

The particle size of 2500-mesh talcum powder is about 5.5 μm, the larger the particle size of the reinforcing agent material, the worse the reinforcing effect

Images