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A platform for research: civil engineering, architecture and urbanism
Flake alumina porous ceramic used for high-power LED lamp cooling fins, and preparation method thereof
The invention discloses a flake alumina porous ceramic used for high-power LED lamp cooling fins. The flake alumina porous ceramic is prepared from, by weight, 34 to 36 parts of alpha-Al2O3 (particle size ranging from 2 to 8m), 100 to 105 parts of deionized water, 0.2 to 0.3 part of sodium polyacrylate, 2 to 2.3 parts of methylcellulose, 1.6 to 1.8 parts of glycerin, 0.5 to 0.7 part of MgF2, 1.3 to 1.5 parts of silica fume, 0.3 to 0.4 part of magnesium powder, 2 to 3 parts of nanocarbon, 0.7 to 0.9 part of nano-indium stannum oxide, 4 to 5 parts of nano-aluminium hydroxide, 1.2 to 1.5 parts of nano-copper, and 0.9 to 1.1 parts of PVA binder. Interlayer channels of the flake alumina porous ceramic are communicated; transition performance and thermal fatigue resistance are excellent; the flake alumina porous ceramic is provided with improved heat dispersion performance and excellent recombination property with metal via adding of MgF2, silica fume, magnesium powder, nanocarbon, and nano-indium stannum oxide; the flake alumina porous ceramic is suitable for high-power LED chip heat dispersion, and service life of chips is prolonged greatly.
Flake alumina porous ceramic used for high-power LED lamp cooling fins, and preparation method thereof
The invention discloses a flake alumina porous ceramic used for high-power LED lamp cooling fins. The flake alumina porous ceramic is prepared from, by weight, 34 to 36 parts of alpha-Al2O3 (particle size ranging from 2 to 8m), 100 to 105 parts of deionized water, 0.2 to 0.3 part of sodium polyacrylate, 2 to 2.3 parts of methylcellulose, 1.6 to 1.8 parts of glycerin, 0.5 to 0.7 part of MgF2, 1.3 to 1.5 parts of silica fume, 0.3 to 0.4 part of magnesium powder, 2 to 3 parts of nanocarbon, 0.7 to 0.9 part of nano-indium stannum oxide, 4 to 5 parts of nano-aluminium hydroxide, 1.2 to 1.5 parts of nano-copper, and 0.9 to 1.1 parts of PVA binder. Interlayer channels of the flake alumina porous ceramic are communicated; transition performance and thermal fatigue resistance are excellent; the flake alumina porous ceramic is provided with improved heat dispersion performance and excellent recombination property with metal via adding of MgF2, silica fume, magnesium powder, nanocarbon, and nano-indium stannum oxide; the flake alumina porous ceramic is suitable for high-power LED chip heat dispersion, and service life of chips is prolonged greatly.
Flake alumina porous ceramic used for high-power LED lamp cooling fins, and preparation method thereof
DONG ZHAOHAI (author)
2015-12-02
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015
Flake alumina porous ceramic used for packaging high-power LED and preparation method thereof
| European Patent Office | 2015
| European Patent Office | 2015
| European Patent Office | 2015
| European Patent Office | 2015