Talc is preferred for many products and paints for flash primers and vehicles . The flaky magnesium silicate, including talc, is suitable for metal primers because it can improve the grinding and water resistance, and the water resistance may be derived from the way in which the flaky particles extend the passage of moisture through the coating. Application characterization of talc in the coatings industry Because talc has excellent physical and chemical properties such as lubricity, anti-adhesion, flow aid, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, softness, good gloss and strong adsorption. The application of talc as a filler in coatings is mainly reflected in: 1. High whiteness, uniform particle size and uniform dispersion; 2. Can play a skeleton role; 3. Reduce manufacturing costs; 4. Improve the hardness of the paint film of the paint; 5. Can increase the stability of the shape of the product; 6. Increase tensile strength, shear strength, flexural strength, pressure strength, deformation, elongation, and thermal expansion coefficient. As a filler of polyurethane waterproof coating, talc can not only reduce the volume shrinkage of the coating during curing, improve the wear resistance and adhesion of the coating, reduce the cost, but also make the coating have good storage stability and heat resistance. Trend of talc powder in coatings The talcum powder as a filler has a similar trend to the elastic elongation and tensile strength of waterproof coatings: With the increase of the filler, the elastic elongation and tensile strength of the waterproof coating fluctuate greatly, and the increase occurs first, reaching the maximum value at each peak; then decreasing, and the optimal value is reached when the plateau is reached. Analysis of the causes of cracks on the surface of paint The main reasons for cracking on the surface of the coatings industry are as follows: Due to the influence of the external environment, including temperature, humidity, light irradiation, scrubbing, bumping, etc., or poor adhesion between the layers of the paint film, it may cause morbid phenomena such as cracking of the paint or peeling of the paint film. Application areas of coating grade talc Because the coating grade talc powder has strong adsorption and is highly dispersed in the oil, it can prevent the paint coating from being precipitated and can be used as a suspending agent. Talc can also adjust the gloss. Because of its stable chemical properties and strong hiding power, it can prevent the paint coating layer from aging and cracking and improve the resistance to weathering. Therefore, the coating grade talcum powder is mainly used for: architectural coatings, interior and exterior wall coatings, industrial coatings, anticorrosive coatings, fireproof coatings, pigments and other products, and acts as a filler. Source: Chinese talc Â
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1.It is applicable for explosive gas or stream atmospheres of CAT IIA IIB IIC,temperature classification from T1 to T6,is mainly applied to Zone 1 and Zone 2,20,21,22 hazardous area or nflammable dust environment . explosion proof emergency light,explosion proof led light,explosion proof led light fixtures Jiangmen City Pengjiang District Qihui Lighting Electrical Appliances Co., Ltd , https://www.qihuilights.com
2.Widely used in the industrial area of Oil,Chemical ,Spaceflight,war and son on.
Talc is versatile and can be used in a variety of industrial coatings, especially primers. The steel structure primer can use talc powder in whole or in part to improve the precipitation of the coating, the mechanical force of the coating film and the recoatability.