Introduction to the seven application areas of ultrafine talcum powder-1
Ultrafine talcum powder is a natural hydrous magnesium silicate mineral with the following characteristics: it is inert to most chemical reagents and will not decompose when in contact with acid; it is a poor conductor of electricity with low thermal conductivity; it has excellent thermal shock resistance and will not decompose even at high temperatures (900°C). These excellent properties make talcum powder an ideal filler material. Today, we will sort out the main application areas of ultrafine talcum powder.
The physical and chemical properties of talcum powder include: lubricity, anti-stickiness, as a flow aid, fire resistance, acid resistance, insulation, high melting point, chemical stability, good hiding power, softness, excellent gloss and strong adsorption. These characteristics make talcum powder play an important role in all walks of life.
Application of talcum powder in the coating industry:
As a filler, the role of talcum powder in coatings is mainly manifested in the following aspects:
Provide high whiteness, uniform particle size and good dispersibility;
Act as a skeleton material to improve the structural stability of the coating;
Effectively reduce manufacturing costs;
Increase the hardness of the paint film;
Enhance the shape stability of the product;
Increase the tensile strength, shear strength, bending strength and pressure strength of the coating; Reduce deformation and elongation, and reduce the thermal expansion coefficient.
In addition, talcum powder as a filler in polyurethane waterproof coatings can also significantly optimize the performance of coatings: it can not only reduce the volume shrinkage of the coating during the curing process, improve wear resistance and adhesion, but also reduce costs; More importantly, talcum powder can give the coating excellent storage stability and heat resistance.
