Talk Composites - The Forum for Advanced Composites

pigment issues

http://www.talkcomposites.com/Topic17123.aspx

By ChrisR - 5/17/2015 12:14:33 PM

Anyone else had problems with pigmenting epoxy?

I added a gnats danglies worth of red epoxy pigment to a tester of the normal resin I use, 18hrs later and it's still not gone off properly, mix ratios were definitely correct, temperature has been reasonably consistent.

I've not pigmented epoxy before (poly yes, epoxy no) so does it retard the cure time?

 
By dbcrx - 5/17/2015 3:16:33 PM

As honaldo said, it should be fine. I've mixed pigment up to about 10% before too and it's cured ok. I've even done it with polyester pigment in epoxy and it still works. I'd try another test batch, but this time mix your epoxy then split it in half and just pigment one of them, so then you've got a control sample to compare it with.