Modified PE sheath for cold resistant cable, insulation material and manufacturing method thereof

Abstract

The invention discloses a modified PE sheath and insulation material for cold resistant cables and belongs to the technology field of the cable material, which consists of a low density polyethylene, a linear low density polyethylene, acetate-vinyl acetate copolymer, an antistatic agent HDC-103, a quadric-propyal-pentaerythritol lipid 1010, calcium AD, polyethylene wax, barium stearate, titanate GT-114, magnesium hydroxide and zinc stearate, thereby improving the environmental stress cracking resistant performance of polyethylene. The modified PE sheath and the insulation material have the advantages of cold resistance, being not easy cracking, not decomposing when wet and the good flexibility.

Description

Modified PE sheath or insulating material for cold-resistant cable and manufacturing method thereof technical field The invention relates to the technical field of cable materials, in particular to a modified PE sheath or insulating material used on cold-resistant cables. Background technique In the cable industry, ordinary polyethylene is a conventional sheath and insulating material. However, ordinary polyethylene has problems such as poor stress resistance, easy cracking, and insufficient softness under low temperature conditions, so it cannot be used in certain low temperature or temperature difference applications. In the environment with relatively large conditions, at present, the cables used in these environments usually use rubber as the sheath or insulation material, but the rubber has a strong smell and pollutes the environment. In order to achieve the same wear resistance, the amount of rubber used in manufacturing Large, high cost, in addition, in long-term us...

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Problems solved by technology

In the cable industry, ordinary polyethylene is a conventional sheath and insulating material. However, ordinary polyethylene has problems such as poor stress resistance, easy cracking, and insufficient softness under low temperature conditions, so it cannot be used in certain low temperature or temperature difference applications. In the environment with relatively large conditions, at present, the cables used in these environments usually use rubber as the sheath or insulation material, but the rubber has a strong smell and pollutes the environment. In order to achieve the same wear resistance, the amount of rubber used in manufacturing Large, high cost, in addition, in long-term use, the rubber is easy to oxidize the copper wire, which affects the electrical conductivity of the cable; PETP (elastomer PE) is also used as a sheath and insulation material for cold-resistant cables, although it can overcome common polyethylene materials. Stress resistance and softness problems, but its dielectric properties are average, and the material will decompose when exposed to water, which will affect the life of the cable