纳米材料（Nanometer material）.docVIP

纳米材料（Nanometer material） Nanomaterials, nanomaterials, refer to the basic unit size of synthetic materials, limiting the size of the material in the range of 1~100nm, which is approximately equal to the scale of 10~100 atoms closely arranged together. From the size, usually produce significant changes in physical and chemical properties of fine particles in the size of 0.1 microns (1 m = 1000 mm, 1 mm = 1000 micron, 1 micron = 1000 nm, 1 nm = 10 angstroms), 100 nm. Therefore, particles with a particle size of 1~100 nm are called ultrafine particles, and they are also nano materials. The nano alumina shows a white fluffy powder state, and the crystalline shape is gamma -Al2O3. The particle size is 20nm; the specific surface area is larger than 160m2/g. Uniform particle size distribution, high purity, good dispersion, high specific surface, high inertia, high activity, is activated alumina; porous; high hardness, good dimensional stability, strong surface acidity and surface alkaline, is widely used for green chemical material such as new catalysts and catalyst carriers. Can be widely used in plastics, rubber, ceramics, refractories and other products, strengthening and toughening, especially to improve the wear resistance of the ceramic compactness, smoothness, thermal fatigue, fracture toughness, creep resistance and high polymer material product is particularly significant. Excellent dispersion in solvent water; solvent ethanol, propanol, propylene glycol, isopropyl alcohol, ethylene glycol monobutyl ether, acetone, butanone, benzene, xylene, without adding dispersant, mixing that can be fully dispersed. Excellent use in epoxy resins, plastics, etc.. Technical index: Nano alumina appearance white powder. Nano alumina; crystal phase; gamma phase. The average particle size of nano alumina (nm) is 20 + 5. Nano alumina content is greater than 99.9%. Melting point: 2010 DEG C, -2050 DEG C Boiling point: 2980 DEG C Relative density (water =1): 3.97-4.0 Application range: