Wet mica powder

The effect of wet mica powder:
1 improve the air tightness of plastics
Wet mica powder has excellent sheet shape. The thickness of microcrystalline is nano meter, the diameter thickness ratio is as high as 80~120 times, and the effective barrier area is very large. In processing, the mica chip is parallel to the plastic surface, which is parallel to the surface of the plastic, and is perpendicular to the direction of the permeation and escape of the gas and liquid, thus forming a layer barrier in the plastic and so on, so that the gas and the liquid are very difficult to penetrate. When gas and liquid penetrate the plastic, it is necessary to bypass and overstep the mica chip. The penetration path is extremely tortuous (shielding effect and labyrinth effect). According to the results of foreign research, the time of penetrating material is about 3 times longer.
A large number of studies at home and abroad have shown that to obtain excellent barrier function, the diameter thickness ratio of flake filler is at least 50 times, preferably 70 times. The ratio of diameter to thickness of dry mica powder is usually only about 10 times. The industrial practical value is wet mica powder, and the diameter thickness ratio is as high as 80~120 times. After adding wet method and high quality mica powder into the plastic, the air tightness will be greatly improved. Such plastic, according to the patent literature, can be used to make coke bottles, beer bottles, drug bottles, moisture proof packaging materials and many similar special plastic packaging materials.
2 change the aging resistance of plastic
Products such as medicine, cosmetics, food and so on need to shield light radiation, especially ultraviolet radiation, so as to improve the storage performance of products. In their plastic packaging materials, flake like wet mica powder can be added to shield light radiation, especially ultraviolet radiation.
3 improve the insulation property of plastic products
Mica has a very high resistance and is itself a high performance insulating material. Mica powder is a well-known technology to improve the insulation performance of materials. If you want to manufacture high insulation plastic products, you can consider adding functional filler wet mica powder. As mentioned above, the insulation properties of mica with high iron content are relatively low and should be avoided. Dry mica powder is not washed, and its iron content is generally high. It is not suitable to use such mica powder.
The application of wet mica powder in plastics is much more than that. Making full use of the unique properties of wet mica powder, many valuable new plastic products can be developed to form many valuable application technologies. For example, adding mica powder in plastic can improve printing performance and composite bonding property.