Due to the large difference between the properties of fine talc polymer materials, its application in the field of polymer materials is limited. In order to further improve its performance broaden its application fields, the surface of its powder must be modified. So what are the surface modification methods of fine talcum powder? Talc Factory

(1) Surface covering modification method: The surface active agent is covered on the surface of the fine talc particles to give new properties to the surface of the particles. In this method, the surface active agent coupling agent is combined with the particle surface by adsorption chemical bond, so that the surface of the particle changes hydrophilic to hydrophobic, so that the compatibility of the particle the polymer can be improved. This method is currently commonly used.

(2) Mechanochemical method: This method is to make the particles larger than the fine talc powder smaller by crushing, friction other methods. In this process, the surface activity of the particles becomes larger, that is, the surface adsorption capacity Enhanced, easy to absorb other substances, simplify the process, reduce the cost, make the quality of the product easy to control.

(3) Modification method of outer film layer: a method of uniformly coating a layer of polymer on the surface of fine talc particles to change the surface properties of the particles.

(4) Local activity modification: use chemical reaction to graft some groups functional groups compatible with the polymer on the particle surface, so that the inorganic particles the polymer have better compatibility, so as to achieve the inorganic particles the polymerization The purpose of compounding.