Colloidal Silica 2.5 kg

Colloidal Silica is an agent which is used to control the thixotropy or ‘sag’ characteristics of a resin system. By adding colloidal silica powder in varying amounts to a resin mix containing the other filler types mentioned, the handling and flow characteristics can be controlled. Relatively small quantities added to a resin mix containing glass bubbles or microballoons will give non-sag properties and impart easier handling. Colloidal silica is also used with microfibres to produce a mix suitable for use as a high strength, non-sagging structural adhesive, particularly for non-absorbent materials such as grp. The inclusion of colloidal silica has the effect of increasing the hardness of the resulting mix which will create more difficulty when sanding. For this reason colloidal silica is usually added in the minimum quantities to any mix for which sanding is anticipated. In some applications this feature can be used to an advantage, for example to create a hard wearing edge or surface.

AMPRO™ Silica is naturally water-resistant / hydrophobic making it more suited for marine applications. Lower loading levels are required compared to traditional silica, up to 2% reduction by weight.

AMPRO™ COLLOIDAL SILICA HYDROPHOBIC RESIN THICKENER

Fine white powder

Used to control the thixotropy or ‘sag’

Can be used with Glass Bubbles, Microballoons and Microfibres

Naturally water-resistant / hydrophobic for marine applications

Lower loading levels compared to traditional silica, up to 2% by weight

PRODUCT DETAILS

Composition: Hydrophobic Silicon Dioxide

Appearance: White Powder

Particle Size: 0.012 microns

Bulk Density: 50 - 60g/litre approx.

TRANSPORT & STORAGE The product should be kept in securely closed containers during transport and storage. Adequate long term storage conditions will result in a shelf life of 2 years from the date of manufacture. Storage should be in a warm dry place out and containers should be firmly closed. 

Click here for the Technical Data Sheet

Silica