Heat-conduction composite material and preparing method thereof

A heat-conducting composite material and solution mixing technology, which is applied in the direction of heat exchange materials, chemical instruments and methods, and the shape of heating elements, can solve problems that cannot meet actual needs, so as to improve heat conversion efficiency and heat conduction efficiency, increase heat, The effect of reducing power consumption

Inactive Publication Date: 2016-07-27
北京新电环能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the context of the current national and social requirements for energy saving and environmental protection, magnesia san

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0056] Example 1

[0057] 1. Preparation of thermally conductive composite materials

[0058] (1) formic acid and calcium chloride concentration are that the calcium chloride hexahydrate solution of 9 mass % is uniformly mixed to obtain a liquid phase part, and the content of formic acid is 38 mass % in the liquid phase part, and the content of calcium chloride hexahydrate solution is 38 mass %. The content is 62% by mass;

[0059] (2) preparing perovskite powder with a particle size of 80 nm to obtain a solid phase fraction;

[0060] (3) Mixing the liquid phase part and the solid phase part uniformly to obtain a thermally conductive composite material, wherein the ratio of the liquid phase part in the thermally conductive composite material is 42% by mass and the ratio of the solid phase part is 58% by mass.

[0061] The thermal conductivity of the obtained thermally conductive composite material is about 10.03 W / m·K, and the latent heat of phase transition reaches about 24...

Example Embodiment

[0065] Example 2

[0066] 1. Preparation of thermally conductive composite materials

[0067] (1) the calcium chloride hexahydrate solution that formic acid and calcium chloride concentration is 7 mass % is mixed, obtains liquid phase part, the content of formic acid is 45 mass % in the described liquid phase part, and the content of calcium chloride hexahydrate solution is 45 mass %. The content is 55% by mass;

[0068] (2) preparing perovskite powder with a particle size of 80 nm to obtain a solid phase fraction;

[0069] (3) Mixing the liquid phase part and the solid phase part uniformly to obtain a thermally conductive composite material, wherein the ratio of the liquid phase part in the thermally conductive composite material is 48% by mass and the ratio of the solid phase part is 52% by mass.

[0070] The thermal conductivity of the obtained thermally conductive composite material is about 8.58 W / m·K, and the latent heat of phase transition reaches about 195 J / g.

[0...

Example Embodiment

[0074] Example 3

[0075] 1. Preparation of thermally conductive composite materials

[0076] (1) formic acid and calcium chloride concentration are that the calcium chloride hexahydrate solution of 10 mass % is uniformly mixed to obtain a liquid phase part, and the content of formic acid in the liquid phase part is 40 mass %, and the content of calcium chloride hexahydrate solution is 40 mass %. The content is 60% by mass;

[0077] (2) preparing perovskite powder with a particle size of 60 nm to obtain a solid phase fraction;

[0078] (3) Mixing the liquid phase part and the solid phase part uniformly to obtain a thermally conductive composite material, wherein the ratio of the liquid phase part in the thermally conductive composite material is 40% by mass and the ratio of the solid phase part is 60% by mass.

[0079] The thermal conductivity of the obtained thermally conductive composite material is about 10.34 W / m·K, and the latent heat of phase transition reaches about 2...

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Abstract

The invention discloses a heat-conduction composite material and a preparing method thereof.The heat-conduction composite material can serve as a heat conducting medium in an electric heating tube to replace magnesia in a traditional electric heating tube.The heat-conduction composite material is subjected to phase changing in the process that the heat emitted by an electrical heating alloy wire in the electric heating tube is guided to the outer wall of the heating tube, and therefore heat conduction efficiency is remarkably improved.The electric heating tube with the heat-conduction composite material has high heat conversion efficiency and high heat conduction efficiency, and the power consumption of the electric heating tube can be further reduced.

Description

technical field [0001] The invention relates to the technical field of thermally conductive composite materials, in particular to a high thermally conductive composite material and a preparation method thereof. Background technique [0002] Electric heating tube (also known as electric heating rod) is an electrical component that converts electric energy into heat energy. It is a key component in the field of electric heating. Other heating devices and almost all areas that need heating. The existing electric heating tube uses a metal tube as the shell, and spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) are uniformly distributed along the central axis of the tube, and the gap in the tube is filled with a medium with good insulation and thermal conductivity—magnesia or Granular composition containing magnesia sand, both ends of the nozzle are sealed with silica gel or ceramics. [0003] Magnesia sand is a solid with a high melting point, which co...

Claims

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Application Information

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IPC IPC(8): C09K5/02H05B3/44
CPCC09K5/02H05B3/44Y02P20/10
Inventor 李志强潘志强张红段佳松
Owner 北京新电环能科技有限公司
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