300 Mesh Silica Powder is a fundamental and widely used inorganic non-metallic powder material, with a median particle size (D50) of approximately 25-30 microns. This product is processed from high-quality natural quartz stone through crushing, coarse grinding, fine grinding, and strict multi-stage classification, ensuring uniform and stable particle size distribution. From a physical performance perspective, 300 Mesh Silica Powder possesses high Mohs hardness (approximately grade 7), extremely stable chemical properties, resistance to acid and alkali corrosion, a high melting point above 1700°C, and a low coefficient of thermal expansion. Its main component, silicon dioxide (SiO2), content is typically maintained at around 98.8-99.5%, with low impurity levels, endowing the product with excellent insulation properties and weather resistance.
In terms of applications, due to its moderate particle size, good flowability, and cost-effectiveness, 300 Mesh Silica Powder is extensively used in the construction and building materials industry, notably in artificial marble slabs and artificial quartz slabs. It is added to floor screeds, wear-resistant flooring, and prefabricated components, significantly enhancing the strength, hardness, and impermeability of concrete. In polymer products, 300 Mesh Silica Powder is also commonly applied in sealants, fireproof materials, and other fields. Compared to finer silica powders, the 300 Mesh product offers superior processing flowability and lower cost while meeting basic performance requirements, making it a highly cost-effective choice in numerous mid-to-low-end industrial sectors.
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