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Irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material

A technology of flame-retardant cables and inorganic flame retardants, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of low hardness, softness and oil resistance, etc., and achieve the effect of good flexibility and excellent mechanical properties

Active Publication Date: 2011-05-25
JIANGSU DEWEI ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products have only one characteristic. The first three patented products are all soft low-smoke halogen-free flame-retardant materials with low hardness. They can be used to replace soft PVC materials, but they cannot be used in oil-resistant occasions. The patent CN101508806A involves An oil-resistant, low-smoke, halogen-free, flame-retardant cable material, but its hardness is within the range of ordinary low-smoke, halogen-free, flame-retardant cable materials, and cannot meet the requirements of softness and oil resistance

Method used

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  • Irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material
  • Irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material

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Embodiment 2

[0019] In embodiment 2, select vinyl acetate content to be respectively 33% and 50% ethylene-vinyl acetate copolymer, the ratio of the two is 2: 1, interface compatibilizer selects maleic anhydride grafted ethylene-propylene copolymer for use, Its Shore A hardness is 63, the inorganic flame retardant is magnesium hydroxide and aluminum hydroxide treated with silane, the ratio of the two is 2:1, the fineness is 5000 mesh, and the flame retardant synergist is red phosphorus and high molecular weight Silicone masterbatch, oxidized polyethylene wax and magnesium stearate as lubricant, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol as antioxidant Ester and three [2.4-di-tert-butylphenyl] phosphite compound system, ratio is with example 1.

Embodiment 3

[0020] In embodiment 3, select vinyl acetate content to be respectively 33% and 40% ethylene-vinyl acetate copolymer, the ratio of the two is 1: 2, interface compatibilizer selects maleic anhydride grafted ethylene-octene copolymer for use , whose Shore A hardness is 78, and the inorganic flame retardant is magnesium hydroxide and aluminum hydroxide treated with silane, and the ratio of the two is 2:1. The fineness is 5000 mesh, the flame retardant synergist is made of red phosphorus and silicon rubber, the lubricant is made of oxidized polyethylene wax and paraffin wax, and the antioxidant is made of thiobisphenol antioxidant.

Embodiment 4

[0021] In embodiment 4, select vinyl acetate content to be respectively 28% and 33% ethylene-vinyl acetate copolymer, both ratios are 1: 1, interface compatibilizer selects maleic anhydride grafted ethylene-propylene copolymer for use, The Shore A hardness is 63, and the inorganic flame retardant is magnesium hydroxide and aluminum hydroxide treated with silane, and the ratio of the two is 2:1. The fineness is 5000 mesh, the flame retardant synergist is made of silicone masterbatch and silicone rubber masterbatch, the lubricant is made of oxidized polyethylene wax and magnesium stearate, and the antioxidant is made of thiobisphenol antioxidant.

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Abstract

The invention provides an irradiation cross-linking oil resistance type soft low smoke zero halogen flame-retardant cable material which comprises the following components in parts by weight: 60-90 parts of ethylene-vinylacetate copolymer, ethylene-propylene-diene rubber and ethylene-octylene copolymer, 0-20 parts of nitrile rubber, 10-30 parts of interface compatilizer, 80-130 parts of flame retardant, 2-15 parts of flame-retardant synergist, 0.5-1.0 part of antioxidant, 1-2 parts of cross-linking sensitizing agent and 0.5-1.0 part of lubricant. The preparation method of the cable material in the invention mainly comprises the steps of silane surface modification treatment of the flame retardant, mixing and extruding of a double screw mixer-extruder unit or an internal mixer unit, brace water cooling or water ring particle cutting and the like. The cable material provided by the invention has the advantages of superior flame resistance (single cable can vertically burn), good mechanical properties, especially high softness, oil resistance, high-temperature resistance (the cable material can be used in a range of minus 40 DEG C-125 DEG C), low smoke, low toxicity and excellent processability.

Description

technical field [0001] The invention relates to a low-smoke, halogen-free, flame-retardant cable material, in particular to a radiation-crosslinked, oil-resistant soft low-smoke, halogen-free, flame-retardant cable material. Background technique [0002] Low-smoke halogen-free flame-retardant cable materials are more and more popular and valued in the wire and cable industry because of their superior performance such as environmental protection, low smoke, and flame retardancy. Many manufacturers regard it as a potential replacement for PVC materials. However, a large amount of inorganic flame retardants are added to the existing conventional low-smoke halogen-free cable materials, which greatly loses the mechanical properties, electrical properties and softness of the materials while having high flame retardant properties, and the resistance Low temperature cracking, which limits the wider use of the product. Halogen-free cable materials are mainly divided into two types: ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/16C08L9/02C08L51/06C08K13/06C08K9/06C08K3/22H01B3/44
Inventor 陈敏张建耀戴红兵李小刚顾金云张丽本
Owner JIANGSU DEWEI ADVANCED MATERIALS
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