Thermoplastic water-resistant low-smoke halogen-free flame retardant cable material and manufacturing method thereof

Abstract

The invention discloses a thermoplastic water-resistant low-smoke halogen-free flame retardant cable material which is prepared from the following raw materials in part by weight: 40-100 parts of ethylene-ethylene vinyl acetate copolymer, 10-60 parts of linear low-density polyethylene, 15-25 parts of macromolecular compatibilizer, 120-160 parts of inorganic filler, 2-4 parts of surface treating agent, 0.5-1 part of antioxidant, 1.5-2 parts of carbon black masterbatch and 2-5 parts of processing aid. The manufacturing method of the cable material comprises the following steps of matrix resin blending and extrusion, inorganic filler pretreatment, extrusion granulation and the like. The thermoplastic water-resistant low-smoke halogen-free flame retardant cable material and the manufacturing method thereof have the characteristics and the advantages of excellent water resistance, heat resistance and mechanical performance, better toughness and bending resistance, better cracking resistance and flame retardant property, low density, low smoke, low toxicity and environment friendliness.

Description

technical field [0001] The invention relates to the field of low-smoke, halogen-free, flame-retardant cable materials, in particular to a thermoplastic water-resistant, low-smoke, halogen-free, flame-retardant cable material and a manufacturing method thereof. Background technique [0002] In the past, most of the flame-retardant materials in the domestic wire and cable industry were halogen-containing flame-retardant materials, which released a large amount of smoke and corrosive halides when burned, causing damage to the human body and the environment. At present, many halogen-free flame retardant materials have added a large amount of inorganic flame retardants or other additives to achieve the purpose of flame retardancy, and at the same time, they have brought some problems, especially when they are used, the mechanical properties are low; The performance is further reduced, the volume resistivity and the breakdown field strength are reduced, and the cables are cracked ...

AI Technical Summary

Problems solved by technology

[0002] In the past, most of the flame retardant materials used in the domestic wire and cable industry were halogen-containing flame retardant materials, which released a large amount of smoke and corrosive halides when burned, causing damage to the human body and the environment.

At present, many halogen-free flame retardant materials have added a large amount of inorganic flame retardants or other additives to achieve the purpose of flame retardancy, and at the same time, they have brought some problems, especially when they are used, the mechanical properties are low; The performance is further reduced, the volume resistivity and the breakdown field strength are reduced, and the cables are cracked and leaked during use, which brings hidden dangers to public safety.

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