What should I know when choosing quartz powder?

Square quartz powder is made by calcining selected vein quartz ore at around 1500 ℃, non polluting grinding processing, magnetic separation, and grading, with stable properties. The silicon content is above 99.8%, the crystal phase is tetragonal, the hardness is about 6.5, the density is 2.45, the specific surface area is large, the porosity is high, the weather resistance is good, the precipitation resistance is good, and the thermal shock resistance is good. What are the characteristics of quartz powder? Lianyungang Haosen Mineral Products Co., Ltd. will introduce you to some purchasing knowledge of silicon micro powder.

Main features:

1. Excellent optical properties. The refractive index of quartz decreases from 1.55 to 1.48, which is closer to the refractive index of PE, PP, and some resins. The mixed resin is transparent and does not cover the color of the pigment itself, while filling with other fillers will make the color of the pigment lighter and distorted.

2. High reflectivity. The specific structure of quartz helps with light reflection and can replace glass microbeads as reflective paint, which can enhance slip resistance and improve the reflectivity of paint.

3. High whiteness, low density, bright color. Quartz has a whiteness of over 95% and can be used in coatings and paints to replace some titanium dioxide and reduce formulation costs.

4. Corrosion resistance, scratch resistance, and scrub resistance.

5. It does not contain organic pollution and has extremely low metal content. It can enhance the UV resistance of the coating and has good insulation properties.

6. Excellent thermal shock resistance. When square quartz is heated to around 220-240 ℃, it undergoes a certain degree of thermal expansion, which compensates for the shrinkage of epoxy resin, gypsum, and other curing reactions at this temperature, so that the casting body does not deform.