Shenzhen Yixincai Pearlescent Pigment Co

Cai Zexuan, Shenzhen Yixincai Pearlescent Pigment Company
Pearlescent powder is suitable for all coating systems, such as acrylic nitrocellulose alkyd polyester and many other systems. It disperses well in both water-based and solvent-based media, so it can be used in both water-based and solvent-based systems. It is non-conductive and fully suitable for the electrostatic spraying process in powder coatings, eliminating the danger of static sparks. It has excellent sulfide resistance and does not produce discoloration. It can withstand high temperatures of ℃ and can be used for baking paint. Excellent light and weather resistance, meeting demanding usage requirements. It has been widely used in the coating of automobiles, bicycles, building materials, furniture and other products as well as decorations, toys, stationery, cosmetics, containers, leather and other products of different backgrounds. The method of using pearlescent powder is very simple. Just add an appropriate amount to various transparent substrates to get pearlescent coating. However, the final pearlescent luster and unique hue will completely depend on the directional and parallel arrangement of the pearlescent powder. Under normal circumstances, the flaky structure of Yixincai pearlescent powder will follow the laws of physics. The flowing liquid in the paint will automatically be arranged in parallel according to the direction of flow. When the viscosity of the paint increases with the evaporation of the solvent or chemical reaction, This directional parallel arrangement will be fixed, so the good pearlescent luster and special hue will be presented. However, if the coating is too thick, the high evaporation rate of the solvent or the extremely low construction temperature will cause the viscosity of the coating to increase too slowly, causing the Yixincai pearlescent powder to return to its arbitrary arrangement, and the pearlescent effect will not be produced, making the coating It is dull and rough and cannot produce a gorgeous hue. It can be seen that for different coating systems, appropriate drying speed and appropriate viscosity should be selected, and it is very important to find the best ratio through experiments. The amount of pearlescent powder added is completely determined based on the different coating thickness, construction method, transparency required covering area and pearlescent effect. The general addition amount is %% (weight ratio), but sometimes, % of pearlescent powder can produce a special transparent glitter effect. For thin coatings, the addition amount should be increased appropriately, sometimes as high as %%. Under normal circumstances, it is not recommended to use higher pigment amounts. Too much pearlescent powder will prevent directional parallel arrangement, so that the pearlescent effect cannot be reflected. . Wetting, dispersing and mixing In order to make dispersion easier and simpler to use, it is recommended to wet the pearlescent material and preferably prepare it into a pigment slurry, so as to avoid the generation of more air bubbles during stirring. Usually has a considerable specific surface area, and wetting is very simple and fast. In order to ensure the stability of the hue and avoid the occurrence of flocculation, it is recommended to wet the pearlescent pigment for about an hour. This can ensure the consistency of the hue and avoid the flying of the pearlescent material. When mixing, simply stir to disperse evenly. The pearlescent lamellar structure and brittleness determine the dispersion method that cannot use high shear force (such as high-speed disperser) and grinding (such as roller mill and ball mill) during mixing. This method will cause the pearlescent powder flake crystals to be crushed and cracked, thereby reducing the pearlescent effect or even losing luster. When a high-speed disperser must be used for dispersion, the dispersion time should be as short as possible. Generally, the pearlescent material should be added last after all other pigments are evenly dispersed. The inevitable settling of considerable flake crystals can be precisely controlled by using a certain amount of flocculant to form a loose, easily redispersible precipitate that requires simple stirring or beating during long-term storage and large-area on-site construction. It can be dispersed evenly by circulation, thus ensuring the consistency of the coating hue.