Mengenai Silica Flour

Silica Flour, also known as ground silica or quartz flour, is a finely ground form of crystalline silica with the chemical formula SiO₂. It appears as a white to off-white powder produced by grinding high-purity quartz or silica sand to specific particle sizes. Silica flour is valued for its hardness, chemical inertness, high melting point, and reinforcing properties across numerous industrial applications.

Silica Flour Uses

Paints and Coatings

Silica flour is used as a functional filler and extender in paints, coatings, and protective finishes. It improves abrasion resistance, enhances film hardness, and provides anti-settling properties. In industrial coatings, silica flour contributes to durability, weatherability, and scratch resistance while reducing gloss in matte and satin finishes.

Construction and Building Materials

In cement and concrete formulations, silica flour acts as a pozzolanic material that reacts with calcium hydroxide to improve strength, reduce permeability, and enhance chemical resistance. It is used in high-performance concrete, grouts, mortars, and repair materials. Silica flour also appears in specialty construction products including polymer-modified cementitious coatings and flooring compounds.

Plastics and Rubber

Silica flour serves as a reinforcing filler in rubber compounds, improving tensile strength, tear resistance, and abrasion resistance. In plastics manufacturing, it enhances dimensional stability, heat resistance, and mechanical properties while reducing material costs. The compound is used in silicone rubber, thermoset plastics, and composite materials.

Industrial Applications

Silica flour is used in oil and gas well cementing operations to prevent strength retrogression at high temperatures. In foundry applications, it serves as a mold and core additive improving surface finish and dimensional accuracy of metal castings. Additional uses include refractory materials for high-temperature applications, ceramic manufacturing, adhesives and sealants formulations, and as an anti-blocking agent in films and packaging.

Silica Flour Supplier Australia, USA & More!

Redox are trusted, authorised suppliers of Silica Flour. With distribution centres worldwide, we can supply to Australia, USA, UK, NZ, Europe, Asia and more. Get in touch with our expert team, who can help you order the right product, form and amount for your needs.