Talk Composites - The Forum for Advanced Composites

How to mix pigments in Epoxy ?!?!

http://www.talkcomposites.com/Topic33378.aspx

By Prior - 7/22/2019 11:00:15 AM

Hi
I have the 500g Black epoxy paste. I have tried to mix it twice now with my Epoxy resin and both times after painting with it, it has black spots that remain tacky. Once everything is cured, these spots are still like black paste. I assume it's because I'm not mixing properly. Any tips to the best method. Im mixing (as I thought) thoroughly by hand with a wooden stick. In 200ml total quantities with 10% pigment.

Thanks
By pmulholl - 7/25/2019 8:39:39 AM

 
Rich (Staff) - 7/25/2019 8:01:03 AM
In theory yes, you'd need to add very low quantities to maintain the translucency, probably lower than a 0.5% ratio with the black being so potent. Alternatively, there is the Translucent Black pigment in the Pack of 10 Translucent Tinting Pigments.

Thanks Rich, not sure how many of the other colours would actually use though Wink