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Silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and preparation method thereof

A low-smoke flame-retardant, silane crosslinking agent technology, applied in the direction of cable/conductor manufacturing, conductors, electrical components, etc., can solve the problems of high hardness and non-flame retardancy of materials, and achieve excellent processing performance, low cost, The effect of excellent mechanical properties and flame retardancy

Active Publication Date: 2012-10-17
JIANGSU DEWEI ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cable material in this patent realizes the characteristics of self-crosslinking, it does not have flame retardancy, and the hardness of the material is relatively high, so it is only suitable for the production of voltage wires and cables

Method used

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  • Silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and preparation method thereof
  • Silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and preparation method thereof
  • Silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This example provides a method for preparing a silane self-crosslinking halogen-free low-smoke flame-retardant elastic material. The raw materials and dosages used are shown in Table 1, wherein:

[0027] The Mooney viscosity of EPDM rubber is 25, and the propylene content is 25wt%;

[0028] The melt index of ethylene-octene copolymer is 5.0, and the Shore A hardness is 75;

[0029] The lubricant is PPA, the antioxidant is antioxidant 300, the grafting initiator is DCP, and the silane crosslinking agent is vinyltrimethoxysilane.

[0030] The modified flame retardant is prepared by the following process: adding magnesium hydroxide to a high-speed mixer, and uniformly spraying into the ethanol solution of titanate coupling agent whose mass is 2% of the mass of magnesium hydroxide, titanic acid The content of the titanate coupling agent in the ethanol solution of the ester coupling agent is 40 wt%.

[0031] The second antioxidant comprises antioxidant 1010 and antioxidant...

Embodiment 2

[0039] This example provides a method for preparing a silane self-crosslinking halogen-free low-smoke flame-retardant elastic material. The raw materials and dosage thereof are shown in Table 1. The raw materials other than the modified flame retardant are the same as those in Example 1.

[0040] In this example, the modified flame retardant is prepared by the following process: adding magnesium hydroxide and aluminum hydroxide (weight ratio 2:1) into a high-speed mixer, and injecting a mass of magnesium hydroxide and hydrogen evenly under high-speed stirring 2% ethanol solution of titanate coupling agent based on the total mass of alumina, and the content of titanate coupling agent in the ethanol solution of titanate coupling agent is 40wt%.

[0041] The preparation process of the silane self-crosslinking halogen-free low-smoke flame-retardant elastic material is the same as that in Example 1.

Embodiment 3

[0043] This example provides a preparation method of silane self-crosslinking halogen-free low-smoke flame-retardant elastic material. The raw materials and dosage used are shown in Table 1. The raw materials other than the modified flame retardant and the second antioxidant are the same as those in the implementation Example 1 is the same.

[0044] In this example, the modified flame retardant is prepared by the following process: adding magnesium hydroxide and intumescent flame retardant (weight ratio 8:1) into a high-speed mixer, and injecting a mass of magnesium hydroxide evenly under high-speed stirring and 1% ethanol solution of titanate coupling agent based on the total mass of the intumescent flame retardant, and the content of titanate coupling agent in the ethanol solution of titanate coupling agent is 50wt%.

[0045] In this example, the second antioxidant comprises antioxidant 1010 and antioxidant 168 in a weight ratio of 2:1.

[0046] The preparation process of t...

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Abstract

The invention relates to a silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and a preparation method thereof. The elastic material comprises a flame-retardant component A and a catalysis component B with the weight proportion of 100:(4-6), wherein the flame-retardant component A comprises 30-70 parts of ethylene propylene diene monomer, 30-70 parts of ethylene-octylene copolymer, 15-25 parts of nitrile rubber, 1-6 parts of silane crosslinking agent, 0.3-1.5 parts of graft initiator, 0.1-5 parts of antioxygen, 0.2-2 parts of lubricant, 0.1-4 parts of 3-aminopropyl trimethoxy silane and 50-150 parts of modified flame retardant; and the catalysis component B comprises 100 parts of ethylene-vinyl acetate and / or ethylene-octylene copolymer, 3-50 parts of organosilicone flame retardant, 1-5 parts of first antioxygen, 1-10 parts of second antioxygen and 1-8 parts of crosslinking catalyst. The elastic material is a novel halogen-free low-smoke flame-retardant cable material, and has the advantages of excellent flame resistance and elasticity, low smoke, low toxicity, excellent processing performance and low cost.

Description

technical field [0001] The invention relates to a halogen-free low-smoke flame-retardant cable material and a preparation method thereof, in particular to a silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and a preparation method thereof. Background technique [0002] Halogen-free low-smoke flame-retardant cable materials are more and more popular 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. Low-smoke flame-retardant cable materials are mainly divided into two types: cross-linked type and thermoplastic type. Thermoplastic materials have the advantage of being recyclable, and are mainly used in power cables, control cables, and communication cables as insulation and sheath layers for such cables. Cross-linked materials are mainly electron beam irradiation cross-linked materials, ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08C08L9/02C08K13/06C08K9/04C08K3/22C08K7/22C08K5/544C08K5/5425C08J3/24B29B9/06B29C47/92H01B7/18H01B7/295H01B13/24B29C48/92
CPCB29C48/04B29C48/40B29C48/92
Inventor 张丽本栾珊珊陈敏王兴宁顾金云张建耀戴红兵李小刚张玉平李善忠周建明
Owner JIANGSU DEWEI ADVANCED MATERIALS
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