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Silica, the second most abundant natural mineral in the Earth's crust, draws its natural energy from sand and gravel, and through technological refinement, becomes an essential material spanning basic building materials and high-end technologies. It is unassuming yet indispensable.Today, it is the "cornerstone of quality" in industries such as building materials, rubber, electronics, and cosmetics, and has become a "reliable choice" in the minds of Alibaba buyers.
1.Dual production process options to meet all needs
Natural Mineral Purification: Carefully selected and purified from natural minerals such as quartzite, quartz sand, and diatomaceous earth, preserving the stable structure of natural minerals at an affordable cost. Impurities such as iron and aluminum are removed through crushing, grinding, and flotation processes, achieving a SiO₂ purity of over 98.5%, suitable for general applications such as building materials and coatings.
Chemical Synthesis (High-End Mainstay): Utilizing precise processes such as gas-phase and precipitation methods, using silanes and silicates as raw materials, and prepared through AI temperature control and vacuum reaction technologies. Synthesized products achieve a purity of up to 99.9%+, with uniform particle size (controllable from nanometer to micrometer level), outstanding functional properties, and can meet the stringent requirements of electronics, semiconductors, and high-end cosmetics, accounting for over 60% of the high-end market.
High temperature and weather resistance, stable and worry-free: With a melting point as high as 1800℃, it is UV resistant and will not age or decompose even after many years of outdoor use, making it the "long-life choice" for refractory materials and outdoor building materials;
Environmentally friendly and non-toxic, compliant and compatible: Based on natural minerals, it does not contain heavy metals and complies with EU REACH and RoHS standards, making it suitable for sensitive applications such as food contact materials, children's toys, and cosmetics;
Reinforcing and toughening, performance upgrade: The high specific surface area provides excellent reinforcing effects. Adding it to rubber and plastics can increase tensile strength by 30%-50% and extend product lifespan;
Adsorption and dispersion, multiple functions: The porous structure combines adsorption and dispersion properties, serving as a coating matting agent, a food desiccant, and improving the stability of material systems, preventing stratification and sedimentation;
Building Materials Industry
Concrete and Mortar: Adding quartz sand enhances strength and wear resistance, used in roads, bridges, and building structures, extending service life.
Coatings and Waterproofing Materials: As a filler or matting agent, it improves coating adhesion and weather resistance, preventing cracking and peeling.
Rubber and Plastics Industry
Rubber Products: Adding precipitated silica to tires, seals, and cable sheaths significantly strengthens them, improving wear resistance and aging resistance; leading rubber companies account for over 40% of procurement.
Plastic Products: Added to pipes, appliance casings, and food packaging, it enhances rigidity and heat resistance, meeting environmental standards.
Chemicals and Other Fields
Cosmetics and Skincare: Nano-grade silica is used in foundation and loose powder to absorb oil, control oil, and set makeup; it has good skin compatibility and is suitable for sensitive skin.
Refractory Materials and Abrasives: Utilizing its high-temperature resistance and high hardness, it is used to make refractory bricks and grinding wheels, suitable for metallurgical and machining applications.
Qualifications: Must meet GB/T 30916-2014 national standard and ISO dual system certification; export requires REACH/FDA compliance.
Specifications: Purity, particle size/specific surface area, moisture ≤1%, sieve residue ≤0.1%.
Trial Use: Small-batch testing for compatibility.
Suppliers: Priority given to "reputable suppliers + in-depth factory audits," with support for customization and after-sales technical guidance.
