Shaoxing textured sand supplier
Quartz glass has a series of excellent physical properties, and its linear expansion coefficient is very small, so it can achieve zero expansion theoretically. Quartz glass has excellent light transmission performance, not only through visible light, but also through ultraviolet light and infrared induction. The physical and chemical stability of quartz glass and the excellent performance of electric vacuum pump make it a very good acid resistant raw material, and the continuous high temperature vacuum value can reach 1 × 10-5. Quartz glass can be used to make semiconductor materials, energy-saving lamps and lanterns, semiconducting communication equipment, laser generators, optical equipment, laboratory equipment, electrical machinery and equipment, medical equipment, heat and corrosion resistant chemical instruments, decorative building materials, national defense and safety and other industrial production.
Shaoxing textured sand supplier
The flame retardancy of quartz sand can be indicated by its sintering point, that is, the temperature at which the test material is gradually melted and sintered. Sintering point refers to the temperature at which the surface of raw sand particles or the mixture between sand particles gradually melts. The sintering point test can be carried out in various continuous high temperature tubular heating furnaces, and the temperature should be controlled to 1350 ℃. Before the test, the electric furnace is heated to the predetermined temperature, and then the dried test materials are put into the calcined porcelain boat. The temperature of gradual test can be determined from 1000 ℃ or based on practical experience. During the whole process of the test, the porcelain boat equipped with test materials gradually pushed the furnace, insulated for 5min at the required temperature, and then gradually pulled the porcelain boat out of the furnace.
Shaoxing textured sand supplier
Calcium carbonate is widely used, and most plastics can be used. In addition, calcium carbonate is effective in improving some properties of plastic products to expand their use standards. In plastic production and processing, they can reduce the shrinkage rate of epoxy resin, improve rheological personal behavior, and manipulate viscosity. It can also have the following functions: improve the reliability of the overall dimensions of plastic products; Improve the strength and rigidity of plastic products; Improve the processing properties of plastics; Improve the temperature resistance of plastic products; Improve the astigmatism of plastics; It can make the product have certain performance; Reduce the cost of plastic products.
Shaoxing textured sand supplier
Particle appearance: Due to the difference in production equipment, original ore origin and crystal structure, heavy calcium carbonate is usually divided into various particle shapes, such as multi-faceted body, flat flat body, rectangle, long rod, near round ball and irregular shape. In many aspects, the rectangular calcium carbonate has good circulation in the processing of plastic products, which is convenient for silane coupling agent to cover chemical crosslinking, and the production equipment is less damaged, but the physical properties of the product are relatively reduced; The specific surface area of flat flat and long rod particles is relatively large. If surface treatment is carried out, the silane coupling dose will be increased, but the physical properties of the product are good.
