EVA/MLLDPE (ethylene-vinyl acetate/metallocene linear low-density polyethylene) component-type low-smoke halogen-free irradiation-crosslinked wire cable material, and preparation method and application thereof

Abstract

The invention discloses an EVA / MLLDPE (ethylene-vinyl acetate / metallocene linear low-density polyethylene) component-type low-smoke halogen-free irradiation-crosslinked wire cable material which is prepared from the following raw materials in parts by weight: 100 parts of EVA, 10-25 parts of MLLDPE, 80-130 parts of halogen-free flame retardant, 1.5-5.5 parts of coupling agent, 1.0-2.5 parts of crosslinking agent, 0.8-1.5 parts of antioxidant, 0.8-1.5 parts of ultraviolet absorbent, 5-10 parts of maleic anhydride graft compatilizer and 1.5-4.5 parts of lubricant. The invention also discloses a preparation method of the wire cable material and a low-smoke halogen-free irradiation-crosslinked wire cable prepared from the wire cable material. The low-smoke halogen-free irradiation-crosslinked wire cable material and wire cable are free of halogen elements, and have the characteristics of high flame retardancy, and low smoke and no toxicity during combustion. The MLLDPE and EVA are compounded to enhance the compatibility between the base and inorganic filler, and thus, the wire cable material has excellent mechanical properties. The wire cable material has the characteristics of high temperature resistance, aging resistance and the like. The preparation method of the wire cable material and wire cable is simple and easy to implement, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a wire and cable material, its preparation method and application, in particular to a low-smoke and halogen-free radiation cross-linked wire and cable material, its preparation method and application. Background technique [0002] At present, with the improvement of people's awareness of environmental protection and the rapid development of socialist construction, the demand for low-smoke and halogen-free wires and cables in the market is increasing. This is mainly because low-smoke halogen-free wires and cables do not release corrosive gases when they burn, and have less smoke and high visibility, which is of great help to rescue work in fire conditions and reduces casualties to a certain extent. and property damage. Therefore, people pay more and more attention to the research of low-smoke halogen-free wire and cable and related materials. [0003] Chinese invention patent 201210143090.0 discloses a LDPE / EVA flame-retardant...

AI Technical Summary

Problems solved by technology

However, due to the use of brominated flame retardants in this flame-retardant composite material, it does not involve research on low-smoke and halogen-free materials.

[0004] Chinese invention patent 201210050440.9 discloses a photovoltaic cable and its preparation method and application. It uses linear low-density polyethylene LLDPE and EVA composite, the preparation method is simple, the processing performance is good, the cost is not high, and it is suitable for industrial production. However, in terms of performance There is still room for improvement, and it does not involve the research of metallocene linear low density polyethylene MLLDPE in EVA system