High-flame-retardant, low-smoke and halogen-free cable material and preparation method thereof

Abstract

The invention provides a high-flame-retardant, low-smoke and halogen-free cable material and a preparation method thereof. The material is prepared from the following raw material by weight parts: 60-67 parts of low-density polyethylene, 3-4 parts of magnesium hydroxide, 25-28 parts of montmorillonite, 2-3 parts of zinc borate, 3-4 parts of a silane coupling agent KH 550, 1-2 parts of ferriferrous oxide, 3-4 parts of tantalum boride, 1-2 parts of tantalum diboride, 1-2 parts of tert-butyl benzoic acid, 2-3 parts of triphenyl phosphate, 2-3 parts of ferrocene, 2-3 parts of gamma-methacryloxy propyl trimethoxy silane, 4-6 parts of polyvinyl acetate, 2-3 parts of dibutyltin dilaurate, 1-2 parts of cyanuric acid zinc, 1-2 parts of zinc oxide, 3-4 parts of soybean oil, 16-18 parts of aluminium hydroxide, 25-29 parts of attapulgite, 1-2 parts of a promoter DTDM, 1-2 parts of a antioxidant MB, 1-2 parts of an anti-scorching agent CTP, 12-14 parts of carbon black N220, 8-10 parts of carbon black N 660 and 6-8 parts of modified diatomite. According to the invention, the zinc borate and the aluminium hydroxide are combined as the flame retardant, thereby improving performances of flame retardation. The method is simple in technology and convenient to produce; the produced cable materials are high in oxygen index, that is, being higher than 40, and excellent in fire resistance. A vertical flame class experiment of the material reaches a supreme grade, that is, FV-0 grade, and a smoke density of the material is lower than that of other similar products.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and more specifically relates to a high flame-retardant, low-smoke and halogen-free cable material and a preparation method thereof. Background technique [0002] Wire and cable materials are mainly made of resin materials, fillers, plasticizers, anti-aging agents, flame retardants, antioxidants, etc. The formula raw materials are mainly concentrated in some common ingredients, which leads to low technical indicators of cable materials or Problems such as high cost, such as low volume resistivity, high temperature resistance, low temperature resistance, flame retardancy, insulation, etc., cannot meet the requirements of cable manufacturers for higher electrical properties of insulating grade sheath materials. Contents of the invention [0003] The purpose of the present invention is to provide a kind of high flame-retardant low-smoke halogen-free cable material and preparation method th...

AI Technical Summary

Problems solved by technology

[0002] Wire and cable materials are mainly made of resin materials, fillers, plasticizers, anti-aging agents, flame retardants, antioxidants, etc. The formula raw materials are mainly concentrated in some common ingredients, which leads to low technical indicators of cable materials or Problems such as high cost, such as low volume resistivity, high temperature resistance, low temperature resistance, flame retardancy, insulation, etc. cannot meet the requirements of cable manufacturers for higher electrical properties of insulating grade sheath materials