Explanation
With feldspar, quartze, kaolin and other natural minerals as the main raw materials, and a small amount of chemical raw materials added, after crushing, ball milling and mixing, the products are formed by wet, dry or half thousand methods, and fired at a high temperature of 1200~1400 ° C, generally need to be glazed or not. The microstructure of green body consists of glass phase, mullite, cristobalite, residual quartze and a few bubbles. porcelain glaze is mainly composed of glass phase, with a small amount of gas phase, crystal, etc. porcelain is characterized by low porosity, fine and shiny section, impermeable, hard texture, high strength, high temperature resistance, excellent oxidation resistance and corrosion resistance. porcelain was invented on the basis of pottery making technology. As early as the Shang and Zhou Dynasties, thousands of years ago, glaze primitive porcelain appeared in China. Later, after more than 1000 years of improvement and improvement, the firm and dense glazed porcelain was first invented in the world in the Han Dynasty at a high temperature of more than 1200 ° C. After the Han Dynasty, the manufacturing technology of porcelain spread throughout China, and many famous historical kilns and unique products with different styles emerged. Such as celadon of Yue Kiln, Longquan Kiln, Ru Kiln, Yaozhou Kiln and Hongzhou Kiln; white porcelain from Ding Kiln, Xing Kiln, Gongxian Kiln and Dehua Kiln; Jun red glazed porcelain of Jun kiln; Yingqing porcelain, blut-and-white porcelain, high-temperature color-glazed porcelain, glaze color, glaze color of Jingdezhen kiln; Tianmu glazed porcelain from Jizhou kiln; Rabbit glazed porcelain for building kilns; Ge Kiln's lamellar glazed porcelain: Shanxi's oil drop glazed porcelain; black glazed porcelain from Hebi Kiln and Guantai Kiln; The use of porcelain such as soy colored glazed porcelain from Ding Kiln and Lincheng Kiln used to be mainly in household utensils, and modern industry is also used to manufacture electric porcelain, chemical porcelain, architectural porcelain, sanitary porcelain, etc.
Classification
Organic polymer materials -> Adhesives and coatings -> Coatings