Anti-ageing cable sheath

Abstract

The invention discloses an anti-ageing cable sheath. The anti-ageing cable sheath is characterized by being prepared from, by weight, 100 parts of thermoplastic elastomer TPO, 40-50 parts of butadiene styrene rubber, 20-30 parts of ethylene-vinyl acetate copolymer EVA, 15-20 parts of nano magnesium hydrate, 5-8 parts of anti-ageing agent mixture, 5-7 parts of zinc borate, 1-2 parts of organic silicon modifier, 8-10 parts of talcum powder, 3-5 parts of tert-butyl peroxybenzoate, 3-5 parts of pulverized triallyl isocyanurate, 4-6 parts of zinc oxide and 2-4 parts of accelerant mixture. As the anti-ageing agent is added, stability of the sheath layer is improved, the cable sheath has excellent oil and weather resistance and ageing resistance and meets the requirements of all fields of the market, the extension strength before ageing reaches 9 N / mm[2], the elongation at break before ageing reaches 400%, and the good vulcanization effect is achieved; the anti-ageing cable sheath has high and low temperature resistance and good flame retardance.

Description

technical field [0001] The invention belongs to the technical field of cable sheaths, in particular to an anti-aging cable sheath. Background technique [0002] Styrene-butadiene rubber is the backbone product of the rubber industry. It is the largest variety of synthetic rubber. It has good comprehensive performance and low price. It can be used instead of natural rubber in most occasions. It is mainly used in the tire industry, auto parts, rubber hoses, tapes, rubber shoes, Wire and cable and other rubber products. Photovoltaic cables conform to the needs of market development and actively respond to the development of the country's photovoltaic industry. Most of them are designed with ordinary PVC sheath materials. Ordinary PVC materials contain toxic substances such as halogens and lead, which are easy to pollute the environment, have low temperature resistance, are easy to age, have poor short-term overload capacity, are not resistant to ozone and water vapor, and have...

AI Technical Summary

Problems solved by technology

Ordinary PVC materials contain toxic substances such as halogens and lead, which are easy to pollute the environment, have low temperature resistance, are easy to age, have poor short-term overload capacity, are not resistant to ozone and water vapor, and have short lifespan.

Moreover, photovoltaic cables are prone to cracking and embrittlement under long-term harsh conditions, leakage fires, and hydrogen chloride gas under fire conditions corrode photovoltaic equipment, which will easily affect the life of photovoltaic cables and control systems.