Silicon powder and quartz powder have great potential in different industries
1. High purity silicon powder for coatings and paints:
High purity silicon powder has special optical properties that conventional SiO2 does not have. It has strong ultraviolet absorption and infrared reflection characteristics.It forms shielding effect on the coating, achieves the purpose of anti-ultraviolet aging and thermal aging, and increases the insulation of the coating.
The high purity silicon powder was doped into uv-curable coatings, which obviously improved the hardness and adhesion of uv-curable coatings, and weakened the degree of UV radiation absorption of uv-curable coatings.Thus, the curing speed of uv-curable coatings is reduced.
High purity silicon powder has a large specific surface area, showing great activity, can form a network structure when the coating is dry.At the same time, it increases the strength and finish of paint, improves the suspension of paint, and keeps the color of paint unchanged for a long time.Filler content is very important to the paint, paint the effects of viscosity, used in paint, coating silicon powder as a functional filler, not only can greatly reduce the dosage of resin, thus greatly reduce the production cost, but also can improve the quality of paint, coating, the paint, coating to achieve low shrinkage rate, low viscosity, high content, high wear resistance and good storage purposes.
2. Silicon micropowder for electronic packaging:
Silicon powder used as filler can greatly improve the rigidity, wear resistance, weather resistance, impact resistance, compression resistance, tensile resistance, flame resistance, good resistance to arc insulation and ultraviolet radiation.
Epoxy resin plastic sealant filled with silicon powder has low thermal conductivity and expansion coefficient, which can be used as the substrate and packaging of microelectronic components with a filling rate of up to 90%, and can be used as the ideal substrate and packaging material for large-scale and vlsi.
3. Silicon powder for electronic ink:
High purity silicon powder has good flow and lubricity, can achieve better dispersion suspension and stability, silicon powder used in inks and pigments, can make inks and pigments use less but high masking power, good luster, fine resin particle size, film continuous, uniform smooth, thin film layer, make the printed image clear.
If used in UV ink, can accelerate its curing speed, at the same time because of the small uniform dispersion of the filler and eliminate the shrinkage of the ink film wrinkle phenomenon.Will make the ink bright and shiny, printing more beautiful images.
4. Silicon powder for advanced ceramics:
High purity silicon powder is used as energy saving mineral material in special high temperature resistant ceramic materials.
As a carrier and filler, high purity silicon powder is widely used to improve the toughness and smoothness of ceramic products.High temperature ceramic matrix composite made of silicon powder, high performance resin and ceramic matrix is the ideal thermal tile material for aircraft, rockets, satellites, spacecraft and other aerospace vehicles.
Applied to precision ceramics, electronic ceramics, advanced ceramics, artificial mullite materials, enamel glaze and special refractory material, has excellent dielectric properties, low thermal expansion coefficient, good electrical insulation, formed in oxide multilayer protective layer, has good mechanical properties and resistance to high temperature oxidation resistance, can also solve the problem of brittleness of ceramics.
Silicon powder added to ceramics, more compact, heat resistance and cold fatigue, strength is greatly improved.
The special refractories have the characteristics of dense structure, high strength, abrasion resistance and erosion resistance, etc.
5. Precision grinding silicon powder used in optical devices and photoelectric industry:
The ultrafine, graded silicon powder is not easy to produce random scratches on the surface of the workpiece, and can provide the best grinding efficiency and surface finish, applied in polishing metal surface, precision valve, hard disk, disc, magnetic head polishing, washing bearing, car polishing agent, all have very good effect.Experiments show that this kind of grinding powder can reduce the grinding and polishing times by at least 10-20%, and can achieve fast grinding and polishing.At the same time, high purity silica powder is widely used in optical devices and photoelectric industry precision grinding, especially suitable for grinding and polishing semiconductor single crystal silicon slice, kinescope glass shell glass screen, optical glass, liquid crystal display (LCD, LED) glass substrate, piezoelectric quartz crystal, compound semiconductor materials (such as gallium arsenide, indium phosphide), magnetic materials, such as the semiconductor industry.
With its excellent physical properties, high chemical stability and unique optical properties, silicon powder has become the most basic, important and key raw materials in many high-tech fields.
As can be seen from the above description, silica powder/quartz powder is very widely used.