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Ethylene-propylene-diene monomer cable accessory and preparation method thereof

A technology of EPDM and cable accessories, which is applied in the field of EPDM cable accessories and its preparation, can solve the problems of heat dissipation, cable breakdown, creepage, etc. without considering the problem, so as to ensure the insulation effect and normal operation , to ensure the effect of heat conduction 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, cable accessories are designed to ensure insulation and stress control, without considering the heat dissipation problem. The volume resistivity of cable accessories in operation decreases with the increase of temperature, which often leads to the operation of cables at high temperatures. When the temperature After the normal operating temperature of the cable is exceeded, accidents such as cable breakdown or creepage are prone to occur. Most of the cable accidents are caused by the breakdown of the cable accessories 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

[0030] In parts by weight, 100 parts of EPDM (ethylene monomer content is 49%, the third monomer content is 1.5%, and the rest is ethylene content), 1 part of zinc oxide, 2 parts of stearic acid, and 40 parts of carbon black , Silica: 30 parts, 150 parts of kaolin filler, 4 parts of di-tert-butyl peroxide, 1 part of sulfur, 35 parts of aromatic oil structure control agent, 6 parts of triallyl cyanurate, 3 parts of accelerator , silicon carbide, boron nitride composite heat-conducting material 15 parts of composite heat-conducting material plasticizing, kneading, extrusion molding or injection molding, vulcanization, expansion of the built-in support tube process to prepare cold-shrinkable cable accessories, the vulcanization process is to use circulating hot air Heating box vulcanization.

[0031] The above-mentioned cold-shrinkable cable accessories were measured, and the results are as follows: In the cable accessories processed by this formula, the thermal conductivity is 3...

Embodiment 2

[0033] In parts by weight, 100 parts of EPDM (the content of ethylene monomer is 70%, the content of the third monomer is 12%, and the rest is ethylene content), 3 parts of zinc oxide, 2 parts of stearic acid, and 40 parts of carbon black , 30 parts of white carbon black, 150 parts of calcined clay, 4 parts of dicumyl peroxide, 1 part of sulfur, 40 parts of liquid paraffin oil, 6 parts of triallyl cyanurate, 4 parts of accelerator, silicon nitride 1. 28 parts of aluminum oxide composite heat-conducting materials are plasticized, kneaded, extruded or injected, vulcanized, and expanded to prepare cold-shrinkable cable accessories. The vulcanization process is vulcanized by a circulating hot air heating box.

[0034] The above-mentioned cold-shrinkable cable accessories were measured, and the results are as follows: In the cable accessories processed by this formula, the thermal conductivity is 4.018 w / m.k, and the volume resistivity is guaranteed to be 3.8*10 16 Ω*cm.

Embodiment 3

[0036] In parts by weight, 100 parts of EPDM (ethylene monomer content is 60%, the third monomer content is 8%, and the rest is ethylene content), 5 parts of zinc oxide, 3 parts of stearic acid, and 80 parts of carbon black , 20 parts of white carbon black, 180 parts of calcium carbonate, 5 parts of tert-butyl cumyl peroxide, 40 parts of liquid polybutene, 5 parts of divinyl toluene, 4.5 parts of accelerator, silicon carbide and boron nitride compound heat conduction 36 parts of the material were plasticized, kneaded, extruded or injected, vulcanized, and expanded to prepare the cold-shrinkable cable accessories.

[0037] The above-mentioned cold-shrinkable cable accessories were measured, and the results are as follows: In the cable accessories processed by this formula, the thermal conductivity is 4.956 w / m.k, and the volume resistivity is guaranteed to be 9.2*10 16 Ω*cm.

[0038] The above embodiments are all examples of preparing EPDM cold-shrinkable cable accessories. In...

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Abstract

The invention discloses an ethylene-propylene-diene monomer cable accessory which comprises the following components in parts by weight: 100 parts of ethylene-propylene-diene monomer, 1-5 parts of zinc oxide, 0.5-3 parts of stearic acid, 10-80 parts of carbon black, 5-50 parts of white carbon black, 10-200 parts of filler, 0.2-10 parts of vulcanizing agent, 5-40 parts of heat conducting material, 0-50 parts of structural control agent, 0-8 parts of vulcanizing agent and 0-5 parts of accelerant. The ethylene-propylene-diene monomer cable accessory disclosed by the invention has good heat conductivity and insulativity, and particularly a compound heat conducting material with different grain sizes, different heat-conducting properties and different reflection coefficients of heat energy and other components such as the ethylene-propylene-diene monomer form a crossover network, so that the heat conducting network has efficient heat conduction, the heat conductivity coefficient can be improved to 30.13-5.142w / m.k and the volume resistivity is 1015 ohm*cm. Therefore, not only can the insulating effect of the cable accessory be guaranteed, but also the heat conducting effect of the cable accessory is guaranteed, so that the cable normally operates.

Description

technical field [0001] The invention relates to a cable accessory and a preparation method thereof, in particular to an EPDM cable accessory with good heat dissipation effect and a preparation method thereof. Background technique [0002] At present, cable accessories are designed to ensure insulation and stress control, without considering the heat dissipation problem. The volume resistivity of cable accessories in operation decreases with the increase of temperature, which often leads to the operation of cables at high temperatures. When the temperature After the normal operating temperature of the cable is exceeded, accidents such as cable breakdown or creepage are prone to occur. Most cable accidents are caused by the breakdown of cable accessories due to cable heating during use, which leads to power outages or dangerous accidents. [0003] Therefore, there is an urgent need for a cable accessory with both good insulation performance and good thermal conductivity. Co...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/36C08K3/22C08K3/34C08K3/26C08K5/09C08K5/14
CPCC08K13/02C08K3/04C08K3/34C08K3/346C08K3/36C08K3/38C08K2003/385C08K2201/014C08L23/16
Inventor 康树峰饶喜梅邢福发张定雄张强张增果
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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