Heat dissipation ceramic for explosion-proof equipment

A technology of explosion-proof equipment and ceramics, which is applied in the field of heat-dissipating ceramics for explosion-proof equipment, which can solve problems such as environmental pollution, large instantaneous current, and inability to meet the working current, and achieve the effect of high thermal conductivity and good insulation strength

Inactive Publication Date: 2021-06-08
湖南创安防爆电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the ceramic tubes for α-Al2O3 explosion-proof fuses used by most automobile manufacturers have an expansion coefficient of about 6.7 to 8.0, poor heat insulation and toughness, and cannot meet the requirements of circuit environments with large operating currents.
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Method used

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Examples

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Effect test

Embodiment 1

[0018] This embodiment provides a heat dissipation ceramic for explosion-proof equipment. The heat dissipation ceramic includes the following components in weight ratio: 75-90 parts of 95 alumina, 1-3 parts of silicon dioxide, 0.5-1 part of kaolin, calcium carbonate 2-5 parts, 1-2 parts of strontium carbonate, 3-5 parts of titanium dioxide, 0.1-0.5 parts of yttrium oxide.

[0019] The processing method of heat dissipation ceramics for explosion-proof equipment of the present embodiment, the processing method includes the following steps:

[0020] S1, process 95 alumina, silica, kaolin, calcium carbonate, strontium carbonate, titanium dioxide, yttrium oxide and other raw materials into powder according to a predetermined ratio, and then mix and stir evenly;

[0021] S2, put the mixed powder evenly mixed in step S1 into a ball mill for ball milling. During the ball milling, the weight ratio of the powder to the ball is 1:2-4, and the ball milling is continued for 15-20 hours; af...

Embodiment 2

[0025] This embodiment provides a heat dissipation ceramic for explosion-proof equipment. The heat dissipation ceramic includes the following components by weight: 80 parts of 95 alumina, 2 parts of silicon dioxide, 0.75 parts of kaolin, 3 parts of calcium carbonate, and 1.5 parts of strontium carbonate. parts, 3.5 parts of titanium dioxide, and 0.2 parts of yttrium oxide.

[0026] The processing method of the heat dissipation ceramics in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention discloses heat dissipation ceramic for explosion-proof equipment. The heat dissipation ceramic is characterized by comprising the following components in parts by weight: 75-90 parts of 95 aluminum oxide, 1-3 parts of silicon dioxide, 0.5-1 part of kaolin, 2-5 parts of calcium carbonate, 1-2 parts of strontium carbonate, 3-5 parts of titanium dioxide and 0.1-0.5 part of yttrium oxide. By adopting the 95 aluminum oxide mixed ceramic, the heat dissipation ceramic is high in heat conductivity coefficient, good in insulating strength and resistant to high temperature.

Description

technical field [0001] The invention relates to the technical field of explosion-proof materials, in particular to a heat dissipation ceramic for explosion-proof equipment. Background technique [0002] With the rapid development of the automobile industry, while pursuing comfort and ease of handling, safety, energy saving and environmental protection are also being paid more and more attention. Many parts in automobiles need to be installed with explosion-proof fuses, especially in LED lamps, an insulating tube needs to be set outside these explosion-proof fuses. At present, these insulating bushings are usually made of ceramics using α-Al2O3 as the main crystal phase. [0003] The chemical bonds in α-Al2O3 ceramics are ionic bonds and covalent bonds. For ionic bonds, once the interatomic distance increases due to thermal expansion, the Coulomb force will be significantly reduced and the potential energy will be significantly increased. That is, only a little expansion wil...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/632
CPCC04B35/10C04B35/632C04B2235/3418C04B2235/349C04B2235/3208C04B2235/3213C04B2235/3232C04B2235/3225C04B2235/9607
Inventor 梁冠亚
Owner 湖南创安防爆电器有限公司
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