Mixed stone ceramic material

Abstract

The invention discloses a mixed stone ceramic material. The mixed stone ceramic material is prepared through grinding raw materials and sintering the ground raw materials, and the raw materials comprise 100-150 parts of mullite powder, 50-60 parts of quartz stone powder, 80-85 parts of calcite powder, 30-45 parts of olivine powder, 50-55 parts of amarella Mauro powder, 5-8 parts of diatom ooze, 3-5 parts of polydimethylsiloxane, 8-10 parts of carboxymethylcellulose sodium, 6-8 parts of hydroxyethyl cellulose, 5-8 parts of rosin, 6-8 parts of glycerin and 10-12 parts of limestone. The mixed stone ceramic material has the characteristics of high heat conductivity, high radiation coefficient, low cost, and realization batch production, and solves the disadvantages of high cost and low productivity of present alumina ceramics and low heat conductivity and low radiation coefficient of steatite ceramics. The special ceramic material with the advantages of high heat conductivity, high heat radiation and low cost is prepared through the following steps: processing the raw materials, carrying out a hot pressing or dry pressing molding technology, and carrying out high temperature sintering. The ceramic material is suitable for high-power and low-power LED light fixture, comprising lamp holders, LED supports, substrates or COB substrates, and can be widely applied to the fields of commercial illumination and indoor illumination.

Description

technical field [0001] The invention relates to a mixed stone ceramic material, in particular to a mixed stone ceramic material with high thermal conductivity. Background technique [0002] Ceramic material as the heat dissipation shell of LED lamps is a kind of heat dissipation material that has emerged in the past two years. At present, the ceramics used as the shell of LED lamps on the market are mainly alumina ceramics and steatite porcelain. Ceramic materials can effectively solve the heat dissipation and insulation problems of LEDs. [0003] Alumina ceramic materials have high density, expensive raw materials, firing temperature above 1600 degrees, long firing cycle, and cannot be mass-produced. Although the thermal conductivity is high, the manufacturing cost is too high and the product is too heavy. [0004] Talc porcelain has low thermal conductivity. Although the production cost is low and it can be mass-produced, the thermal conductivity is too low and the heat di...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art, and the purpose is to provide a mixed stone ceramic material, which has the characteristics of high thermal conductivity, high radiation coefficient, low cost, and can be produced in batches, and solves the problem of existing oxidation problems. The disadvantages of aluminum ceramics are high cost, low production capacity, low thermal conductivity of steatite ceramics, and low emissivity coefficient