Messi Biology said, nano magnesium hydroxide molecular formula Mg(OH)2, white microfine powder, non-toxic, tasteless, non-corrosive, relative density 2.36, refractive index 1.561, 350 ℃ began to decompose, 430 ℃ when the decomposition is rapid, 490 ℃ when all decomposition, soluble in strong acid solution and ammonium salt solution, insoluble in water. Compared with ordinary magnesium hydroxide products, nano magnesium hydroxide has special properties and applications, which are mainly manifested in.
I. Optical properties
When the grain size of metal material decreases to nanometer level, the color changes to black, and the grain size decreases. The light absorption ability of nanoparticles is proportional to their color. The quantum size effect of energy levels and the charge distribution on the grain surface also affect the process of light absorption. The conduction electron energy levels in the grains often coalesce into very narrow energy bands resulting in narrow absorption bands. Nonlinear optical effects become another aspect of the study of optical properties of nanomaterials.
II. Electromagnetic properties
The spacing of atoms of metallic materials is proportional to the variation of particle size. Therefore, when the metal grains are in the nanometer range, their density increases as the spacing becomes smaller. As a result, the average free range of free electrons in the metal decreases and the electrical conductivity decreases. In general, the magnetic structure of...
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