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Hi Philip,
Yes, you could use a pigment in our infusion resin. Generally we don't do this because pigmenting resins (rather than pigmenting none-structural gel coats) will have some detrimental effect on the performance of the resin but there are applications where this is considered a worthwhile cost.
Pigments are generally supplied in a paste called a dispersion. What this means is that the pigment powder can be ground into some resin in order to release the full colour properties of the pigment. Just adding a pigment powder to resin gives a very unsatisfactory result because the powder stays clumped together and doesn't spread through the resin leaving it patchy and the colour very weak.
It's essential when pigmenting any resin that you use pigment dispersion that's based on the same type of resin that you wish to pigment, i.e. you need to use an epoxy dispersion to pigment epoxy resin, a polyester dispersion to pigment epoxy and a polyurethane dispersion to pigment polyurethane resins. The reason for this is obviously that otherwise you'll be adding uncured polyester into your epoxy resin or whatever miss-match you have.
At the moment we have a very limited range of epoxy pigments but we'll very soon carry a full range of epoxy, polyurethane and polyester pigments as we become distributers for the UK's largest pigment manufacturer. In the meantime, please get in touch and we'll see what we can provide.
All the best, Matt
Matt Statham
Easy Composites / Carbon Mods - Technical Sales
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