Low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material

A polyolefin cable material, high flame retardant technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of replacement, high material hardness, and non-compliance with environmental protection requirements, and achieve low hardness, good flame retardant performance, and increased strength Effect

Inactive Publication Date: 2009-11-04
CGN DELTA (ZHONGSHAN) POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of cable material has the characteristics of low smoke and halogen-free, the hardness of the material is very high, in the range of 90-98 Shore A, and it cannot be used on flexible wires, power cords, personal electronic product wires and other wires and cables that require softness and elasticity. Replacing PVC cable material with superior flexibility
As PVC cable material is a kind of halogen-containing polymer, it will produce thick smoke after burning, and release toxic substances such as hydrogen chloride, which does not meet environmental protection requirements and is an obsolete product.

Method used

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  • Low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
  • Low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material
  • Low-smoke bittern-free highly fire-proof elastic polyolefin electric cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: A low-smoke, halogen-free and highly flame-retardant elastic polyolefin cable material

[0036] 1. Material formula

[0037] Component

parts by weight

EVA elastomer, melt index ≤ 5g / 10min, vinyl acetate content 40% by weight in the copolymer

50

POE elastomer, melt index ≤ 3g / 10min, hardness ≤ 75 Shore A

36

EMA elastomer, melt index ≤ 5g / 10min, methyl acrylate content 30% by weight in the copolymer

14

Surface Treatment Magnesium Hydroxide

60

Surface treatment nano magnesium hydroxide, average particle size 40nm

25

Peroxide crosslinking agent (or vulcanizing agent)-DCP

0.3

Phenolic antioxidant (or antioxidant)-1010 antioxidant

2

Silane coupling agent-A-172

3

Lubricant-PE Wax

3

Total:

193.3

[0038] Note: Surface-treated magnesium hydroxide and surface-treated nano-magnesium hydroxide refer to coating the su...

Embodiment 2

[0044] Example 2: A low-smoke, halogen-free and highly flame-retardant elastic polyolefin cable material

[0045] 1. Material formula

[0046] Component

parts by weight

EVA elastomer, melt index ≤ 5g / 10min, vinyl acetate content 40% by weight in the copolymer

70

POE elastomer, melt index ≤ 3g / 10min, hardness ≤ 75 Shore A

25

EMA elastomer, melt index ≤ 5g / 10min, methyl acrylate content 30% by weight in the copolymer

5

Surface Treatment Magnesium Hydroxide

50

Surface treatment nano magnesium hydroxide, average particle size 40nm

30

Peroxide crosslinking agent (or vulcanizing agent)-DCP

0.3

Phenolic antioxidant (or antioxidant)-1010 antioxidant

1

Silane coupling agent-A-172

2

Lubricant-PE Wax

2

Total:

185.3

[0047] 2. Preparation process

[0048] It is the same as that of Embodiment 1, and the description will not be repeat...

Embodiment 3

[0052] Example 3: A low-smoke, halogen-free and highly flame-retardant elastic polyolefin cable material

[0053] 1. Material formula

[0054] Component

parts by weight

EVA elastomer, melt index ≤ 5g / 10min, vinyl acetate content 40% by weight in the copolymer

60

POE elastomer, melt index ≤ 3g / 10min, hardness ≤ 75 Shore A

30

EMA elastomer, melt index ≤ 5g / 10min, methyl acrylate content 30% by weight in the copolymer

10

Surface Treatment Magnesium Hydroxide

55

Surface treatment nano magnesium hydroxide, average particle size 40nm

30

Peroxide crosslinking agent (or vulcanizing agent)-DCP

0.3

Phenolic antioxidant (or antioxidant)-1010 antioxidant

1.5

Silane coupling agent-A-172

2.5

Lubricant-PE Wax

2.5

Total:

191.8

[0055] 2. Preparation process

[0056] It is the same as that of Embodiment 1, and the description will not be...

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Abstract

The invention relates to a low-smoke, halogen-free and highly flame-retardant elastic polyolefin plastic for electric wires and cables. Ethylene-octene copolymer), with a content of 20 to 50 parts by weight; EMA elastomer (ethylene-methyl acrylate copolymer), with a content of 5 to 15 parts by weight; magnesium hydroxide or aluminum hydroxide, with a content of 30 to 70 parts by weight; Nano magnesium hydroxide has a content of 20-40 parts by weight; DCP (dicumyl peroxide) has a content of 0.1-0.6 parts by weight. The hardness of the material is ≤85 Shore A; the strength is ≥9.0MPa; the elongation is ≥150%; the flame retardancy meets the requirements of UL1581 VW-1.

Description

technical field [0001] The invention relates to plastics for wires and cables, in particular to a low-smoke, halogen-free, highly flame-retardant elastic polyolefin plastic polymer mixture for wires and cables. Background technique [0002] As we all know, the conductors of wires and cables are provided with a sheath. In addition to providing the most direct protection function, this sheath should also have basic requirements such as insulation and mechanical properties. It is understood that the main components of low-smoke halogen-free cable materials currently produced and used in China are: EVA (ethylene-vinyl acetate copolymer) 60-100 parts by weight; PE (polyethylene) 0-40 parts by weight; magnesium hydroxide or hydrogen 120-170 parts by weight of aluminum oxide. Although this kind of cable material has the characteristics of low smoke and halogen-free, the hardness of the material is very high, in the range of 90-98 Shore A, and it cannot be used on flexible wires, p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/14H01B7/295C08K3/22
Inventor 单永东魏建良陆惠歧
Owner CGN DELTA (ZHONGSHAN) POLYMER CO LTD
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