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Composite heat-conducting powder for heat-conducting insulation power cable sheath tube and its production process

A power cable, thermal insulation technology, applied in the field of special composite thermal conductive powder for thermal conductive insulation power cable sheath and its production process, which can solve problems such as poor insulation performance

Active Publication Date: 2015-10-21
FUJIAN HOSHING PLASTICS
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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 kind of special compound heat conduction powder for heat conduction insulation power cable sheath tube and its production process, which solves the problem of poor insulation performance due to the use of metal, graphite, carbon black, carbon fiber and other filling materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: The product after weighing and mixing alumina with a particle size of 5-20 μm and 60-80 μm in a weight ratio of 6:4, and then mixed with nano-silicon carbide, nano-aluminum nitride, nano-zinc oxide, and nano-oxide Magnesium, nano-silicon nitride, and nano-boron nitride are weighed according to the weight ratio of 60:20:15:10:8:6:5, dispersed in deionized water, fully stirred for 1 hour, heated to 70°C, added Titanate coupling agent (isopropyl tri(dioctyl pyrophosphate acyloxy) titanate), titanate coupling agent accounts for nano-alumina, nano-silicon carbide, nano-aluminum nitride, nano-zinc oxide, 1% of the total weight of nano-magnesium oxide, nano-silicon nitride and nano-boron nitride, stirred at constant temperature for 1 hour, the resulting product was filtered, dried, soaked in ethanol, then suction filtered, and finally dried at 110°C for 3 hours to compound and blend And become a composite thermal powder.

Embodiment 2

[0066] Example 2: The product is weighed and mixed with alumina with a particle size of 5-20 μm and 60-80 μm in a weight ratio of 6:4, and then mixed with nano-silicon carbide, nano-aluminum nitride, nano-zinc oxide, and nano-oxide Magnesium, nano-silicon nitride, and nano-boron nitride are weighed according to the weight ratio of 48:16:12:8:6:4.8:4, dispersed in deionized water, fully stirred for 1 hour, heated to 70 ° C, added Titanate coupling agent (isopropyl tri(dioctyl pyrophosphate acyloxy) titanate), titanate coupling agent accounts for nano-alumina, nano-silicon carbide, nano-aluminum nitride, nano-zinc oxide, 1.2% of the total weight of nano-magnesium oxide, nano-silicon nitride and nano-boron nitride, stirred at a constant temperature for 1 hour, the resulting product was filtered, dried, soaked in ethanol and suction filtered, and finally dried at 110°C for 3 hours to compound and blend And become a composite thermal powder.

[0067] Among the formulas of the abov...

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Abstract

The invention discloses a special compound heat conducting powder for a heat conducting and insulating power cable protective casing, and a production process thereof. The power comprises the following components in percentage by weight according to the formula: 40-60 percent of alumina of different particle sizes, 5-25 percent of nano silicon carbide, 3-15 percent of nano aluminum nitride, 2-12 percent of nano zinc oxide, 1-10 percent of nano nano magnesia, 4-10 percent of nano silicon nitride, and 1-8 percent of nano boron nitride. The production process is that the components are subjected to surface actification processing and then to compounding. The formula has the main characteristics that the raw materials are easy to obtain, the produced compound heat conducting powder is high in thermal conduction, and the additional amount is small. The formula adopted by the invention can be applied to heat dissipation protective casings for various buried construction cables.

Description

technical field [0001] The invention belongs to the field of electric power and communication system materials, and in particular relates to a composite heat-conducting powder specially used for heat-conducting insulating power cable sheath tubes and a production process thereof. Background technique [0002] The research and development of polymer-based thermally conductive composite materials has become one of the research hotspots of functional composite materials since the 1990s. As a matrix material, polymer has the advantages of light weight, corrosion resistance, high strength, easy processing and good mechanical properties, but at the same time, it has the disadvantages of easy accumulation of electrostatic charge and poor thermal conductivity. Heat dissipation is a crucial issue in the electronics industry and power industry. For example, for electronic components, if the heat is not dissipated in time, it will lead to an increase in its operating temperature, resul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/02C08K3/22C08K3/34C08K3/28C08K3/38C08L23/12C08L23/08C08L9/06C08L51/06
Inventor 陈秀俊彭超吴惠民梁璋富叶艳
Owner FUJIAN HOSHING PLASTICS
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