A low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables

An anti-aging and cable material technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of large changes in mechanical properties, unsatisfactory anti-aging performance, and property loss, so as to reduce casualties and overcome inadequacy. Anti-aging performance, low smoke density effect

Active Publication Date: 2016-05-11
SICHUAN MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Since EPDM rubber is non-polar, although it has excellent aging resistance, it swells greatly in non-polar oil and its mechanical properties change greatly.
EVM has excellent oil resistance due to the introduction of vinyl acetate groups, but its aging resistance is not ideal
At the same time, both EPDM and EVM are halogen-free, but they are flammable. Once a fire occurs, it will cause a lot of property damage and casualties

Method used

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  • A low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] A low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables. By weight, the composition of the material includes:

[0039] EPDM rubber 20 parts

[0040] EVM60 copies

[0041] 2.5 parts of vulcanizing agent

[0042] 3 parts vulcanizing agent

[0043] Anti-aging agent 3 parts

[0044] 15 parts plasticizer

[0045] 0.5 parts of coupling agent

[0046] 20 servings of reinforcing agent

[0047] Filling agent 20 parts

[0048] 56 parts of flame retardant.

Embodiment 2

[0050] A low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables. The material is composed of:

[0051] 30 parts of EPDM rubber

[0052] EVM50 copies

[0053] 2.8 parts of vulcanizing agent

[0054] 1.5 parts of vulcanizing agent

[0055] Anti-aging agent 8 parts

[0056] 10 parts plasticizer

[0057] 1.0 parts of coupling agent

[0058] 15 servings of reinforcing agent

[0059] Filling agent 26 parts

[0060] 50 parts of flame retardant.

Embodiment 3

[0062] A low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables. The material is composed of:

[0063] EPDM rubber 50 parts

[0064]EVM70 copies

[0065] Vulcanizing agent 5 parts

[0066] 5 parts vulcanizing agent

[0067] Anti-aging agent 3 parts

[0068] 25 parts plasticizer

[0069] 1.5 parts of coupling agent

[0070] 25 servings of reinforcing agent

[0071] Filling agent 40 parts

[0072] 65 parts of flame retardant.

[0073] The flame retardant described in the present invention is a low-smoke, halogen-free flame retardant.

[0074] The reinforcing agent of the invention is carbon black, which is cheap, stable in chemical properties, good in reinforcing effect, and significantly improves the mechanical properties of the product.

[0075] The filler described in the present invention is calcined clay. Stable chemical properties, smooth appearance of extruded or calendered products, good heat resistance, acid and alkali resistanc...

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Abstract

The invention relates to a low-smoke halogen-free flame-retardant anti-aging cable material for cables. The cable material is characterized in that the cable material comprises the following components in parts by weight: 20-50 parts of EPDM (ethylene-propylene-diene monomer), 50-80 parts of EVM (ethylene vinyl acetate rubber), 2.5-5 parts of a vulcanizing agent, 1.5-6 parts of a vulcanizing additive, 2-8 parts of an anti-aging agent, 10-30 parts of a plasticizer, 0.5-1.5 parts of a coupling agent, 15-30 parts of a reinforcing agent, 20-40 parts of a filling agent, and 50-70 parts of a flame retardant. According to the invention, because raw materials which do not produce dense smoke in the process of self burning, and do not produce dense smoke during chemical reactions thereof, and can absorb smoke are selected, the smoke density of cables in the process of burning is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of cable materials, and in particular relates to a low-smoke, halogen-free, flame-retardant and aging-resistant cable material for cables. Background technique [0002] Wires and cables are widely used in various fields as electric energy and information transmission bodies. Most wires and cables use plastic and rubber as insulation and sheath materials. Such polymer materials will produce flammable gases after being heated, melted and decomposed. At high temperature, these gases will react with oxygen and burn, which will generate a lot of heat, and the heat will promote the further melting, decomposition and continuous burning of the polymer, which will expand the fire and cause huge losses. my country's fire losses caused by cables alone are as high as several billion yuan every year. [0003] Therefore, as the flame retardant problem of wires and cables has attracted more and more attention, people hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L31/04C08L23/16C08K13/02C08K3/04C08K3/34C08K5/14C08K5/12C08K3/22C08K5/18C08K5/01C08K5/3492H01B3/44
Inventor 武拥建盛业武陈光高沈智飞王娟周燕
Owner SICHUAN MINGXING CABLE
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