Heat-shrinkable heat-conducting cable accessory and preparation method thereof

A cable accessory and heat shrinking technology, applied in the field of heat shrinkable thermal conductive cable accessories and their preparation, can solve the problems of not considering heat dissipation, cable breakdown, creepage, etc., to ensure insulation effect, ensure normal operation, and ensure thermal conductivity. effect of 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

[0037] (1) Masterbatch processing steps: 100 parts by weight of polyethylene, 10 parts of microcapsule red phosphorus, 45 parts of magnesium hydroxide coated with coupling agent, 2-(3,5-di-tert-butyl- 0.8 parts of 4-hydroxy-benzyl)-2-butyl-1,3-malonic acid bis(1,2,2,6,6-pentamethyl-4-piperidinyl) ester, tetrakis[methyl -3 parts of (3,5-di-tert-butyl-hydroxyphenyl) propionate] pentaerythritol ester, 6 parts of silane coupling agent, 8 parts of ethylene-vinyl acetate copolymer modified by maleic anhydride copolymer, silicon carbide 10 parts of boron nitride composite heat-conducting material are granulated by internal mixer or extruded by twin-screw extruder, wire drawing, air-cooled and granulated to form masterbatch granules;

[0038] (2) Extrusion step: Extrude the above-mentioned masterbatch granules through an extruder to extrude the semi-finished cable accessories;

[0039] (3) Irradiation step: irradiating the above-mentioned semi-finished cable accessories through an el...

Embodiment 2

[0043] (1) Masterbatch processing steps: 100 parts by weight of polyethylene, 14 parts of melamine cyanurate, 55 parts of aluminum hydroxide coated with a coupling agent, bis(2,2,6,6-tetra 1.2 parts of methyl-4-piperidinyl) sebacic anhydride, 4 parts of tris(2,4-di-tert-butyl)phenyl phosphite, 8 parts of titanate coupling agent, 5 parts of zinc stearate, horse 12 parts of ethylene-vinyl acetate copolymer modified by anhydride copolymer, 20 parts of silicon nitride and aluminum oxide composite heat-conducting material are granulated by internal mixer or extruded by twin-screw extruder, wire drawing, and air-cooled Pelletizing to form masterbatch granules;

[0044] (2) Extrusion step: Extrude the above-mentioned masterbatch granules through an extruder to extrude the semi-finished cable accessories;

[0045] (3) Irradiation step: irradiating the above-mentioned semi-finished cable accessories through an electron accelerator or a cobalt source or an ultraviolet light source;

...

Embodiment 3

[0049] (1) Processing steps of masterbatch: 100 parts by weight of polyethylene, 18 parts of microcapsule red phosphorus, 75 parts of magnesium hydroxide coated with coupling agent, succinic acid and 4-hydroxy-2,2 , 2 parts of polymer of 6,6-tetramethyl-1-piperidine ethanol, 6 parts of tetrakis[methyl-(3,5-di-tert-butyl-hydroxyphenyl) propionate] pentaerythritol ester, stearic acid 5 parts of magnesium, 8 parts of coloring agent, 8 parts of aluminate coupling agent, 28 parts of ethylene-vinyl acetate copolymer modified by maleic anhydride copolymer, 10 parts of silicon carbide and boron nitride composite thermal conductive material, trihydroxy 1 part of methyl propane triacrylate is granulated by internal mixer or extruded by twin-screw extruder, wire drawing, air-cooled and granulated to form masterbatch granules;

[0050] (2) Extrusion step: Extrude the above-mentioned masterbatch granules through an extruder to extrude the semi-finished cable accessories;

[0051] (3) Irra...

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Abstract

The invention discloses a heat-shrinkable heat-conducting cable accessory, comprising the following components in parts by weight: 100 parts of ethylene and copolymer thereof, 0-25 parts of fire retardant, 0-80 parts of packing, 0.5-2.5 parts of light stabilizer, 0-6 parts of antioxidant, 1.5-6 parts of lubricating agent, 0-10 parts of coloring agent, 1-8 parts of coupling agent, 0-10 parts of modifier, 0-5 parts of crosslinking agent and 1-30 parts of heat-conducting material. The heat-shrinkable heat-conducting cable accessory disclosed by the invention has good thermal conductivity and insulativity, especially the campsite heat-conducting material and other components such as ethylene and the copolymer thereof and the like are stacked to form a cross network, so that effective heat conduction can be carried out, the heat-conducting coefficient can be up to 3.305-4.867w/m.k, the volume resistivity can be ensured at 10<15>ohm*cm, the insulating effect of the cable accessory is ensured, and the heat-conducting effect of the cable accessory can also be ensured, so as to ensure normal operation of the cable.

Description

technical field [0001] The invention relates to a cable accessory and a preparation method thereof, in particular to a heat-shrinkable heat-conducting cable accessory 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. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K13/06C08K9/10C08K3/02C08K5/3492C08K3/22C08K5/134C08K5/3435C08K3/34C08K3/38
CPCC08L23/06C08L2205/04C08L51/06C08K13/06C08K9/10C08K2003/026C08K2003/2224C08K5/3435C08K5/1345C08K3/34C08K2003/385C08K2003/2227C08K5/34928C08K5/526
Inventor 邢福发康树峰饶喜梅张定雄张强张增果
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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