150 DEG C irradiation crosslinking low-smoke non-halogen flame-retardant cable material

Abstract

The invention discloses a 150 DEG C irradiation crosslinking low-smoke non-halogen flame-retardant cable material which is prepared by the following raw materials in parts by mass: 60-90 parts of ethylene-vinyl acetate copolymer, 10-30 parts of LLDPE (linear low density polyethylene), 100-150 parts of inorganic filler, 1-3 parts of surface conditioning agent, 0.5-1 part of anti-oxidant, 2-5 parts of anti-aging agent, and 2-4 parts of processing aid. The cable material is manufactured through procedures of raw material mixing, plastication and granulation, and has the advantages of excellent heat-resistant quality (the temperature resisting grade is 150 DEG C), better mechanical property, flame resistance and electric performance, small thermal deformation, low smoke, low toxicity, and environmental protection.

Description

technical field [0001] The invention relates to the field of low-smoke, halogen-free, flame-retardant cable materials, in particular to a low-smoke, halogen-free, flame-retardant cable material that is irradiated and cross-linked at 150°C. Background technique [0002] Traditional polyvinyl chloride insulation materials have reduced insulation performance under the action of electricity and heat, and produce corrosive and toxic gases when burned. Cross-linked halogen-free flame retardant materials form a network structure between polymer molecules through chemical or physical methods. Its advantages are superior heat resistance and mechanical properties, small thermal shrinkage and thermal deformation, excellent electrical properties, little damage to the human body and little pollution to the environment, so this material has become the mainstream of development. [0003] At present, there are three main cross-linking technologies for cable materials: chemical cross-linkin...

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Problems solved by technology

[0004] In order to achieve a certain flame retardant effect, the amount of inorganic fillers used in wire and cable insulation materials generally exceeds 50%, which brings problems such as poor mechanical properties and electrical properties.

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