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SP Colloidal Silica - 250g

Price: £13.50
+ VAT
  • Description
  • SP 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.


  • Technical Questions
  • If i add colloidal silica to the resin will it be easier or harder to sand than Glass Bubbles?

    Colloidal silica is more difficult to sand than Glass Bubbles.


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  • Technical Data Sheet
  • SP Colloidal Silica - 250g Technical Data Sheet

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