The development of nanometer powder and nanometer material is very rapid. Since the beginning of 2001, Huaxin Super Hard Abrasives Co., LTD., the company has provided a series of nano powder. Over the past few years, our customers have been satisfied with the powdery form we offer. The main FRANGE includes high strength diamond micro powder, nano micro powder and other nano micro powder.
The preparation of nano powder can be roughly divided into gas phase method and liquid phase method. The vapor deposition method includes chemical vapor deposition (CVD), laser chemical vapor deposition (LCVD), vacuum vapor and electron beam and ray beam sputtering. Its disadvantage is higher equipment requirements, large investment. Liquid phase methods include sol-gel method, hydrothermal synthesis method and co-precipitation method, etc. Sol-gel is widely used for the following reasons: (1) Simple operation, short processing time, no extreme conditions and complex equipment; (2) By mixing each component at the molecular level in solution, various nano-powders with complex and uniform composition can be prepared; ③ Strong adaptability, not only can prepare powder, but also can be conveniently used to prepare fiber, film, porous carrier and composite materials.
Sol-gel method is to prepare nano powder or thin film by sol-gel - drying - heat treatment process using metal organic matter (such as alkyd) or inorganic salt as raw material through hydrolysis, polymerization and other chemical reactions in solution.
Processes in solution include hydrolysis and polymerization of metallic organics
Hydrolyze M(OR)x + xH2O -- M(OH)x(OR)n-x + xROH
Micro - and nano-technology plays a very important role in the field of fine chemicals. This book is guided by the theory of micro and nano technology. The preparation technology of micro/nano powder, micro/nano technology and coating, micro/nano technology and catalyst, micro/nano technology and adhesive in fine chemical industry were introduced respectively. Micro - and nano-technology and information chemicals and daily chemicals. Micro/nano technology and functional polymer materials, micro/nano technology and fine ceramics, micro/nano technology and medicine, micro/nano technology and food and health care products, and micro/nano technology and pesticides, dyes, additives, etc.
