In recent years, magnesium hydroxide flame retardants have been widely used in the market as an environmentally friendly green flame retardant. How to improve its flame retardancy? Here is a brief introduction.
Generally, the surface area of magnesium hydroxide is large, and the aggregation between the particles is strong, but the dispersibility and compatibility in the plastic are poor, and magnesium hydroxide as a flame retardant should avoid this phenomenon, and the magnesium hydroxide should have a large crystal. Type, low specific appearance, low microscopic internal strain and so on. The appearance of the magnesium hydroxide flame retardant is hydrophilic due to the charge. In order to prepare the magnesium hydroxide with good flame retardancy, the magnesium hydroxide of the normal temperature composition should be hydrothermally treated to produce a smaller than the outer surface and a better crystal form. Magnesium hydroxide is then treated to improve its compatibility with polymer materials. The heat absorption of magnesium hydroxide is not as high as that of polymer data, and should have a large filling amount.
It is hoped that the related introduction of the above contents can effectively improve the flame retardancy of the magnesium hydroxide flame retardant and facilitate better use.