Fused silica powder, fused silica powder (Fused silica) is made of natural quartz. After melting and melting at high temperature, the amorphous silica produced by cooling is processed by sorting, crushing, iron removal, and other processes to smelt transparent quartz blocks as the main raw material. , and then processed by our company's standard production process into micropowder.
Fused silica micropowder has high purity, a small thermal expansion coefficient, low internal stress, high moisture resistance, low radioactivity, and other excellent characteristics.
And has the following characteristics: extremely low coefficient of linear expansion; good electromagnetic radiation; chemical resistance and other stable chemical properties; reasonable and orderly, controllable particle size distribution.
This product is mainly used in electronic packaging, investment casting, electrical insulation, ceramics, plastic modification, paint coatings, silicone rubber, and other industries.
Product specifications SiO2% ≥99.80300 mesh ~ 5000 mesh can be produced according to different needs of customers. Fe2O3%≤0.010 Al2O3%≤0.10 Moisture%≤0.08 Loss on ignition% ≤0.10 Na+ppm ≤2 Cl-ppm ≤2Fe2+.3 +ppm≤5 Electrical conductivity μs/cm ≤3 Physical properties Crystalline amorphous melting point ℃1713 Boiling point ℃2230 Density, g/cm2.20 Mohs hardness 6.
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