Nitrile-butadiene rubber modified polyvinyl chloride sheath material for communication cables and preparation method thereof

Abstract

The invention relates to a nitrile-butadiene rubber modified polyvinyl chloride sheath material for communication cables, which is prepared from the following raw materials in parts by weight: 65-70 parts of polyvinyl chloride, 20-25 parts of nitrile-butadiene rubber, 0.3-0.5 part of soft microcrystalline wax, 4-4.5 parts of high-molecular-weight polyisobutylene, 2.5-3 parts of triallyl isocyanurate, 0.3-0.6 part of dicumyl peroxide, 0.3-0.5 part of polyisovinyl succimide and 3-4 parts of nano boron fiber. The polyvinyl chloride and nitrile-butadiene rubber are subjected to secondary crosslinking compounding without vulcanization, thereby greatly simplifying the tool set equipment and technique, enhancing the efficiency and lowering the cost; and thus, the sheath material has high strength and favorable oil resistance, has better softness and elasticity than the single use of polyvinyl chloride, and is convenient to install and use. The high-molecular-weight polyisobutylene and nano boron fiber are utilized to enhance the tensile strength, air tightness and moisture resistance of the sheath material.

Description

technical field

[0001] The invention relates to the field of cable sheathing materials, in particular to a nitrile rubber modified polyvinyl chloride sheathing material for communication cables and a preparation method thereof. Background technique

[0002] Because of its softness, elasticity and friction resistance, rubber cables are widely used in medium and low voltage power lines that need frequent movement, such as marine cables, subway cables, mine cables, welding cables, and studio cables. etc. Plastic cables are widely used in medium and high voltage fixed-laying power lines due to their superior electrical properties and high mechanical strength, and each plays an extremely important role in various sectors of the national economy. Among plastic cables, although XLPE power cables have been greatly developed in recent years, PVC insulated and PVC sheathed power cables still play an important role, especially in low-voltage lines, PVC Wires and cables still occupy a ...