ALUMINIUM SILICATE

ALUMINIUM SILICATE :

Aluminium Silicate has the chemical formula Al2SiO3 . It has a vitreous lustre, a refractive index of 1.56, a MOHS hardness of 1-2, and an orthorhombic crystallography with a pH Value 8 – 10 and Bulk Density varies from 0.2 – 0.4 gm/cc. It is remarkable for its use as filler and anti-settling agent in paint and as semi reinforcing agent in rubber. It can be manufactured either by precipitation or by processing of the naturally occuring Aluminium Silicate minerals. The precipitated variety gives better properties due to smaller particle sizes and higher white strength value.

Uses of ALUMINIUM SILICATE

Paints

Part of white pigment like Titanium-dioxide can be replaced(10% or more) without loss of opacity. It gives faster surface and thorough drying of product which also stand up better to abrasive treatment. Excellent substrates for high gloss finishes as they ensure good levelling out. It also acts as an anti-setting agent for pigments and fillers. The viscosity of decorative paints containing our product is highly constant over extended periods of time. Being basic, they also have positive effect on storage stability. Further it provides excellent thicksotropy and facilitate dripless application

Rubber

The particles of the filler used interact with the polymer, thus changing the properties of the mix and vulcanized material. For a filler with definite chemical composition, this interaction becomes more intensive as the surface area of the filler particles increases. Due to fine micronisation of our products, they have very large surface area and thus give excellent properties in terms of tensile strength, modulus and resistance to tear and abrasion. They are particularly suitable for soling and microcellular sheets as they give relatively fast cures and enable production of soling materials to be streamlined.