Heat-conducting wire cable electric-insulation material or sheath material

A wire and cable and insulating material technology, applied in the direction of insulators, insulated conductors, insulated cables, etc., can solve problems such as heat dissipation, cable breakdown, and danger without consideration, achieve excellent thermal conductivity and insulation, and ensure normal operation. Guarantee the effect of insulation effect

Inactive Publication Date: 2014-09-03
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the cable insulation or sheath is designed to ensure insulation and stress control, without considering the heat dissipation problem. The volume resistivity of the cable in operation decreases with the increase of temperature, which often leads to the operation of the cable at high temperature. When the temperature exceeds the normal operating temperature of the cable, accidents such as cable breakdown or creepage are prone to occur. Most cable accidents are caused by the breakdown of the cable due to the heating of the cable during use, which leads to power outages or dangerous accidents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 100 parts by weight of ethylene-vinyl acetate copolymer (EVA), 5 parts of ethylene-vinyl acetate copolymer modified by maleic anhydride copolymer, 60 parts of magnesium hydroxide flame retardant, 2 parts of hindered phenolic antioxidant agent, 3 parts of zinc stearate, 5 parts of vinyl silicone oil, 8 parts of polymer elastomer, nano-zinc powder, and nano-aluminum powder. It is mixed at a temperature of 100 ° C to 170 ° C and then extruded A flame-retardant wire material is formed; and then the flame-retardant wire is obtained through steps such as beading.

[0028] The above-mentioned wires and wires were measured, and the results are as follows: In the wires and cables processed by this formula, the thermal conductivity is 4.02w / m.k, and the volume resistivity is guaranteed to be 5.6*10 14 Ω*cm.

Embodiment 2

[0030] By weight, 100 parts of silicone rubber, 12 parts of maleic anhydride copolymer modified ethylene-vinyl acetate copolymer, 100 parts of aluminum hydroxide flame retardant, 6 parts of hindered phenolic antioxidant, 5 parts of stearic acid Zinc, 8 parts of vinyl silicone oil, 17 parts of polymer elastomer, nano-aluminum-silicon alloy powder, and nano-copper-zinc alloy powder are mixed uniformly at a temperature of 100°C to 170°C and extruded to form a flame-retardant wire material; Wires and other steps to obtain flame-retardant wires.

[0031] The above wires, wires and cables were measured, and the results are as follows: the thermal conductivity of the wires and cables processed by this formula is 4.42w / m.k, and the volume resistivity is guaranteed to be 2.4*10 14 Ω*cm.

Embodiment 3

[0033] By weight, 100 parts of EPDM rubber, 20 parts of maleic anhydride graft-modified polyethylene, 180 parts of halogen-free flame retardants, 8 parts of antioxidant 1010, 6 parts of magnesium stearate, 8 parts of handover Combined auxiliary agent, 8 parts of titanate coupling agent and 38 parts of silicon carbide and boron nitride composite heat-conducting materials, mixed evenly at a temperature of 100°C to 170°C and then extruded to form a flame-retardant wire material; Steps to obtain flame retardant wires.

[0034] The above wires, wires and cables were measured, and the results are as follows: the thermal conductivity of the wires and cables processed by this formula is 4.841w / m.k, and the volume resistivity is guaranteed to be 1.5*10 14 Ω*cm.

[0035] To sum up, the heat-conducting wire and cable insulating material or sheathing material of the present invention has excellent thermal conductivity and insulation, and is especially formed by using two or more heat-con...

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Abstract

The invention discloses a heat-conducting wire cable electric-insulation material or sheath material which comprises the following components in parts by weight: 100 parts of ethylene and copolymer thereof and / or ethylene propylene diene monomer, 0-25 parts of compatilizer, 0-280 parts of flame retardant, 0.3-8 parts of antioxidant, 0.5-6 parts of lubricant, 0.01-10 parts of crosslinking assistant, 0-30 parts of polymer elastomer, 0-8 parts of coupling agent, 0-12 parts of color master batch and 1-35 parts of heat-conducting material. The heat-conducting wire cable electric-insulation material or sheath material has excellent heat conductivity and electric insulativity; and the cross network formed by piling the heat conducting material, the ethylene and copolymer thereof and other components can effectively perform heat conduction, so that the heat conductivity coefficient is up to 3.305-4.867 w / m.k, and the volume resistivity is 10<14> ohm*cm, thereby ensuring the electric-insulation effect and heat-conducting effect of the wire cable and the, and further ensuring the normal operation of the cable.

Description

technical field [0001] The present invention relates to cable insulating or sheathing materials. Background technique [0002] At present, the cable insulation or sheath is designed to ensure insulation and stress control, without considering the heat dissipation problem. The volume resistivity of the cable in operation decreases with the increase of temperature, which often leads to the operation of the cable at high temperature. When the temperature exceeds the normal operating temperature of the cable, accidents such as cable breakdown or creepage are prone to occur. Most cable accidents are caused by the breakdown of the cable due to the heating of the cable during use, which leads to power outages or dangerous accidents. . [0003] Therefore, there is an urgent need for a wire and cable with both good insulation performance and good thermal conductivity. Contents of the invention [0004] The purpose of the present invention is to provide a wire and cable insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L23/16C08L83/04C08K13/06C08K13/02C08K3/08C08K3/34C08K3/38C08K3/22H01B3/44H01B3/28H01B7/17
CPCC08L23/0853C08K2201/011C08L23/16C08L83/04C08L2201/02C08L2203/202C08L2205/035H01B3/28H01B3/441H01B7/295C08L51/06C08K13/02C08K2003/2224C08K2003/0893C08K2003/0812C08K2003/2227C08K2003/023C08K2003/085C08K3/34C08K2003/385
Inventor 康树峰张强饶喜梅邢福发张定雄张增果
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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