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LED lamp heat dissipation tabular alumina porous ceramic with wave absorbing property, and preparation method thereof
The invention relates to LED lamp heat dissipation tabular alumina porous ceramic with a wave absorbing property. The ceramic is prepared from the raw materials of, by weight, 34-36 parts of alpha-Al2O3 (with particle size of 2-8mum), 100-105 parts of deionized water, 0.2-0.3 parts of sodium polyacrylate, 2-2.3 parts of methylcellulose, 1.6-1.8 parts of glycerol, 0.5-0.7 parts of lanthanum fluoride, 2-2.5 parts of nano-grade iron tetraoxide, 0.4-0.6 parts of sodium fluosilicate, 0.5-0.8 parts of sodium borohydride, 4-5 parts of nano-grade aluminum hydroxide, 1.2-1.5 parts of nano-grade copper, and 0.9-1.1 parts of a PVA adhesive. The interlayer pores in the tabular alumina porous ceramic are communicated. The ceramic has good transition and good thermal fatigue property. With the nano-grade aluminum hydroxide, an alumina particle agglomeration phenomenon is ameliorated. With sodium fluosilicate and nano-grade iron tetraoxide, ceramic wear resistance is improved, and the ceramic is provided with a property of absorbing harmful electromagnetic waves.
LED lamp heat dissipation tabular alumina porous ceramic with wave absorbing property, and preparation method thereof
The invention relates to LED lamp heat dissipation tabular alumina porous ceramic with a wave absorbing property. The ceramic is prepared from the raw materials of, by weight, 34-36 parts of alpha-Al2O3 (with particle size of 2-8mum), 100-105 parts of deionized water, 0.2-0.3 parts of sodium polyacrylate, 2-2.3 parts of methylcellulose, 1.6-1.8 parts of glycerol, 0.5-0.7 parts of lanthanum fluoride, 2-2.5 parts of nano-grade iron tetraoxide, 0.4-0.6 parts of sodium fluosilicate, 0.5-0.8 parts of sodium borohydride, 4-5 parts of nano-grade aluminum hydroxide, 1.2-1.5 parts of nano-grade copper, and 0.9-1.1 parts of a PVA adhesive. The interlayer pores in the tabular alumina porous ceramic are communicated. The ceramic has good transition and good thermal fatigue property. With the nano-grade aluminum hydroxide, an alumina particle agglomeration phenomenon is ameliorated. With sodium fluosilicate and nano-grade iron tetraoxide, ceramic wear resistance is improved, and the ceramic is provided with a property of absorbing harmful electromagnetic waves.
LED lamp heat dissipation tabular alumina porous ceramic with wave absorbing property, and preparation method thereof
DONG ZHAOHAI (Autor:in)
21.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015
Sheet alumina porous ceramic for LED lamp heat dissipation and preparation method thereof
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2015