Flexible water-resistant polyethylene cable material and preparation method thereof

Abstract

The invention discloses a flexible water-resistant polyethylene cable material which is prepared from the following raw materials in parts by weight: 89-92 parts of high-density polyethylene, 9-11 parts of isotactic polypropylene, 15-17 parts of decabromodiphenyl oxide, 7-9 parts of antimony trioxide, 2-3 parts of metallocene polyethylene, 2-3 parts of nano magnesium hydroxide, 4-5 parts of cyclohexane, 0.2-0.3 part of gamma-aminopropyltriethoxy silane, 5-7 parts of vapor-phase silica white, 6-8 parts of cis-1,4-polybutadiene rubber, 2-3 parts of epoxy soybean oil, 3-4 parts of dimethyl silicone oil and 8-10 parts of silicon carbide. The base material has favorable compatibility with the filler, and can enhance the toughness, strength, aging resistance and heat resistance of the cable material, so that the cable is easy to mount and has favorable cut-through resistance. The silicon carbide and other components are added to enhance the dispersity and reinforcing property of the filler. By adding the water-resistant component, the product has the advantages of excellent water resistance, favorable flexibility and favorable bending resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flexible waterproof polyethylene cable material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is a general-purpose plastic with a wide range of uses. According to the amount of plasticizer added, it can be made into rigid, semi-rigid and soft products, and can also be modified by blending with other polymers. , made into a wide variety of products with different properties, the amount is very large, it is one of the world's top five general-purpose plastics. The global demand for PVC resin ranks the top three along with polyethylene and polypropylene, while its consumption in China has risen to the first place. Polyvinyl chloride itself is also an intrinsically flame-retardant material, with a high oxygen index and a good flame-retardant effect, but pure PVC is a rigid segment, which begins to decompose above 90°C, and plast...

AI Technical Summary

Problems solved by technology

Among them, blending technology is the most widely used method to improve the dielectric properties of polyethylene, but the blending of different components will form a microscopic interface of two-phase structure, and even the phenomenon of penetration and separation to the surface of the material will affect other aspects of the blend. Dielectric properties, as blending may result in reduced dielectric strength