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High-radiating cable sheath for field use and preparation method thereof

A cable sheath, high heat dissipation technology, applied in the direction of chemical instruments and methods, heat exchange materials, plastic/resin/wax insulators, etc., can solve the problem of not meeting the technical requirements of sheath use, sheath heat dissipation performance, mechanical properties and Decreased corrosion resistance, easy agglomeration of thermally conductive fillers, etc.

Inactive Publication Date: 2019-05-31
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high heat dissipation cable sheath for the field and its preparation method, which solves the problem that the thermal conductivity filler is easy to agglomerate and deposit in the polymer matrix and has poor dispersion, which ultimately leads to the heat dissipation performance, mechanical properties and corrosion resistance of the sheath. Capability decline, unable to meet the use process requirements of the sheath

Method used

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Examples

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preparation example Construction

[0014] The invention provides a method for preparing a high heat dissipation cable sheath for field use, the preparation method comprising:

[0015] (1) Preparation of nano filler: mix nano filler and emulsifier, heat in water bath at 50-60°C, add dispersant after heating in water bath for 1-1.5h, continue heating in water bath at 100-110°C for 10-15min Carry out centrifugation, filter and wash and dry the filter residue to obtain nano filler M;

[0016] (2) Mix the nanofiller M, ether and ethylene glycol, and obtain a nano-dispersion after dispersion, add fiber materials to the nano-dispersion, and obtain a mixture N after stirring;

[0017] (3) Preparation of sheath: mix mixture N, polyethylene, fluorosilicone rubber, cellulose nitrate, neoprene rubber, white carbon black and ethyl acetate, and extrude to obtain a sheath.

[0018] In a preferred embodiment of the present invention, in order to make the prepared sheath have more excellent mechanical properties and thermal co...

Embodiment 1

[0030] Preparation of nanofillers: Mix nano-nitrides and alkylphenol polyoxyethylene ethers at a ratio of 1:20, heat in a water bath at 50°C, add magnesium stearate after heating in a water bath for 1 hour, and continue to bath in water at 100°C After heating for 10 minutes, carry out centrifugation (centrifugation speed is 200r / s, centrifugation time is 5min), after filtering, filter residue is washed and dried (temperature is 40°C, time is 40min), to obtain nanofiller M;

[0031] Mix the nanofiller M, ether and ethylene glycol according to the ratio of 1:5:15:2, obtain a nano-dispersion after dispersion, add glass fibers to the nano-dispersion, and obtain a mixture N after stirring;

[0032] Preparation of sheath: mix mixture N, polyethylene, fluorosilicone rubber, cellulose nitrate, neoprene rubber, white carbon black and ethyl acetate, and extrude to obtain a sheath. With respect to 100g of mixture N, the consumption of the polyethylene is 700g, the consumption of the fluo...

Embodiment 2

[0034] Preparation of nanofillers: Mix nanocarbides and octylphenol polyoxyethylene ether at a ratio of 1:25, heat in a water bath at 60°C, add magnesium stearate after heating in a water bath for 1.5 hours, and continue at 110°C After heating in a water bath for 15 minutes, perform centrifugation (centrifugation speed is 300r / s, centrifugation time is 10min), after filtering, the filter residue is washed and dried (temperature is 60°C, time is 50min), and nanofiller M is obtained;

[0035] The nano filler M, ether and ethylene glycol are mixed according to the ratio of 1:10:20:5, and the nano dispersion is obtained after dispersion, and the basalt fiber is added to the nano dispersion, and the mixture N is obtained after stirring;

[0036] Preparation of sheath: mix mixture N, polyethylene, fluorosilicone rubber, cellulose nitrate, neoprene rubber, white carbon black and ethyl acetate, and extrude to obtain a sheath. With respect to 100g of mixture N, the consumption of the p...

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Abstract

The invention discloses a high-radiating cable sheath for field use and a preparation method thereof. The preparation method comprises: mixing a nano filler and an emulsifier, heating with a water bath at 50-60 DEG C for 1-1.5 h, adding a dispersant, continuing the heating with the water bath at 100-110 DEG C for 10-15 min, centrifuging, filtering, washing the residue, and drying to obtain a nanofiller M; mixing the nano filler M, diethyl ether and ethylene glycol, dispersing to obtain a nano dispersion, adding a fiber material into the nano dispersion, and stirring to obtain a mixture N; mixing the mixture N, polyethylene, fluorosilicone rubber, cellulose nitrate, neoprene, white carbon black and ethyl acetate, and extruding to shape to obtain the sheath. The prepared sheath has excellent heat conductivity and electrical properties, as well as excellent wear resistance.

Description

technical field [0001] The invention relates to the field of cable production, in particular to an outdoor high heat dissipation cable sheath and a preparation method thereof. Background technique [0002] The sheath of the cable is mostly insulated, and its thermal conductivity is generally around 0.2W / (m·K), which makes the sheath prevent the heat loss inside the cable to a certain extent while providing insulation performance, and the heat accumulation will Accelerating the aging speed of the sheath reduces the wear resistance of the surface and shortens the life of the cable. Adding thermally conductive fillers to the sheath material can solve the above problems well. However, the thermally conductive fillers are easy to agglomerate and deposit in the polymer matrix and have poor dispersion, which eventually leads to a decrease in the mechanical properties of the sheath, which cannot meet the use process requirements of the sheath. [0003] Therefore, it is an urgent pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L83/08C08L1/18C08L11/00C08K3/36C08K3/28C08K3/00C08K5/098C08K7/14C08K9/04C08K13/06C09K5/14H01B3/44
Inventor 赵明哲何源崔利侠陶征洁
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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