A mixed stone ceramic material

Abstract

The invention discloses a mixed stone ceramic material, which is made of the following components after being ground and fired: 100-150 parts of mullite powder, 50-60 parts of quartz stone powder, 80-85 parts of calcite powder, 30-150 parts of calcite powder, 45 parts of olivine powder, 50‑55 parts of golden hemp stone powder, 5‑8 parts of diatom mud, 3‑5 parts of polydimethylsiloxane, 8‑10 parts of sodium carboxymethylcellulose, 6‑8 parts of hydroxy Ethylcellulose, 5‑8 parts rosin, 6‑8 parts glycerin, 10‑12 parts limestone. The mixed stone ceramic material has the characteristics of high thermal conductivity, high emissivity, low cost, and mass production, which solves the shortcomings of existing alumina ceramics such as high cost, low production capacity, and low thermal conductivity and low emissivity of steatite porcelain. The raw materials are processed, and then processed by hot pressing or dry pressing, and then fired at high temperature to prepare special ceramic materials with high thermal conductivity, high heat dissipation, and low cost, which are suitable for high-power and low-power LED lamps, including lamp holders, LED brackets, substrates or COB substrates are widely used in commercial lighting, indoor lighting and other fields.

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 materials as heat dissipation shells of LED lamps are a heat dissipation material that has emerged in the past two years. At present, the ceramics used as LED lamp shells 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 dissipation is not...

AI Technical Summary

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