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Non-crosslinking halogen-free flame-retardant cable insulating material or sheath material and preparation method thereof

A flame retardant cable, non-crosslinking technology, used in insulated conductors, insulated cables, organic insulators, etc., to achieve the effect of low production cost

Active Publication Date: 2013-04-03
SHENZHEN WOER NEW ENERGY ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC wires and cables will release toxic gases such as hydrogen halide during combustion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] By weight, 100 parts of ethylene-vinyl acetate copolymer (EVA), 5 parts of maleic anhydride copolymer modified ethylene-vinyl acetate copolymer, 100 parts of magnesium hydroxide flame retardant, 2 parts of antioxidant 1010, 1 part of zinc stearate, mixed uniformly at 100°C-160°C and extruded to form non-cross-linked halogen-free flame-retardant cable compound; then melted on the conductive core of the cable at 100°C-210°C Extrusion coating of the cable compound forms an insulating or sheathing layer.

[0022] The above-mentioned wires and cables were measured, and the results are as follows: flame retardant oxygen index 36, operating temperature range -40~80°C; tensile strength ≥ 12.8MPa; elongation at break ≥ 320%; insulation voltage: 6000V (insulation thickness 0.8mm ), no breakdown; volume resistivity ≥ 10 14 Ω.cm; environmental protection performance complies with EU RoHHS environmental protection standards and does not contain halogen.

Embodiment 2

[0024] By weight, 100 parts of EPDM rubber, 10 parts of maleic anhydride copolymer modified ethylene-dienoate copolymer, 150 parts of high molecular weight ammonium polyphosphate flame retardant, 1 part of antioxidant 944, 1 1 part of anti-copper agent MD-1024, 2 parts of magnesium stearate, 20 parts of polyolefin elastomer, silane coupling agent KH550, 1 part of color masterbatch, knead evenly at 100℃~160℃ and extrude to form non-crosslinked Halogen-free flame-retardant cable material; then, at a temperature of 100°C to 210°C, melt-extrude and coat the cable material on the conductive core of the cable to form an insulating layer or a sheath layer.

[0025] The above-mentioned wires and cables were measured, and the results are as follows: flame retardant oxygen index 31, operating temperature range -40~80°C; tensile strength ≥ 11.8MPa; elongation at break ≥ 230%; insulation voltage: 6000V (insulation thickness 0.8mm ), no breakdown; volume resistivity ≥ 10 14 Ω.cm; environm...

Embodiment 3

[0027] By weight, 50 parts of ethylene-methyl acrylate copolymers, 50 parts of EPDM rubber, 15 parts of maleic anhydride copolymer modified ethylene-acrylate copolymers, 20 parts of modified magnesium hydroxide flame retardants, 150 parts of high molecular weight ammonium polyphosphate flame retardant, 1 part of antioxidant DLTP (dilauryl thiodipropionate), 1 part of antioxidant 944, 2 parts of anti-copper agent MD-1024, 4 parts of magnesium stearate, 20 parts of polyolefin elastomer, silane coupling agent KH550, 2 parts of color masterbatch, knead evenly at 100°C-160°C and extrude to form non-crosslinked halogen-free flame-retardant cable material; then at 100°C-210°C Under temperature conditions, the cable material is melted and extruded on the conductive core of the cable to form an insulating layer or a sheath layer.

[0028] The above-mentioned wires and cables were measured, and the results are as follows: flame retardant oxygen index 36, operating temperature range -40~...

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Abstract

The invention discloses a non-crosslinking halogen-free flame-retardant cable insulating material or sheath material, comprising the following components in part by weight: 100 parts of ethylene and ethylene copolymer and / or ethylene propylene diene monomer, 0-20parts of compatilizer, 20-250 parts of halogen-free flame retardant, 0-5 parts of antioxidant, 0-5 parts of lubricating agent, 0-40 parts of polymeric elastomer, 0-3 parts of coupling agent, and 0-20parts of color master batch, wherein the ethylene and ethylene copolymer are selected from one or more of the following materials: ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer and the like. According to the halogen-free flame-retardant cable insulating material or sheath material, the insulating layer or the sheath layer prepared by the uncrosslinked halogen-free flame-retardant cable insulating material or sheath material can be adaptive to the environment at -40 to 80 DEG C, and the material can not generate poisonous gases such as halogen hydride in case of fire, so that harm to lives and property loss can not be caused by the poisonous gases such as halogen hydride; and besides, the production cost of the material is low.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant cable insulation material or sheath material and a preparation method. Background technique [0002] At present, PVC wire and cable have been widely used. However, PVC wires and cables will release toxic gases such as hydrogen halide during combustion. Contents of the invention [0003] The purpose of the present invention is to provide an environmentally friendly non-crosslinked halogen-free flame-retardant cable insulation or sheath material and a preparation method. [0004] In order to achieve the above purpose, the non-crosslinked halogen-free flame-retardant cable insulating material or sheathing material provided by the present invention comprises the following weight components: [0005] 100 parts of ethylene and its copolymers and / or EPDM rubber; [0006] 0-20 parts of compatibilizer; [0007] 20-250 parts of halogen-free flame retardant; [0008] Antioxidant 0-5 parts; [0009] 0...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L23/12C08L23/16C08K3/22C08K3/26C08K3/38C08K3/32C08K5/521C08K5/3492C08K13/02H01B7/295H01B3/44
Inventor 周和平桂全红
Owner SHENZHEN WOER NEW ENERGY ELECTRICAL TECH CO LTD
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