Talk Composites - The Forum for Advanced Composites

Pigment problems

http://www.talkcomposites.com/Topic30625.aspx

By Sparky2305 - 10/8/2018 2:45:27 PM

Hi 

 Has anyone had any problems with pigments in PU resin loosing colour and becoming patchy over time? I am using Xencast toughened P6 with EC pigments, no fillers, mech mixed, de-gassed the parts are nice colourful and shiny when they come out the mould, after a few days the colour is dying back but the parts are still nice and glossy.

 Any help would be appreciated.

Thanks
By Warren (Staff) - 11/2/2018 5:07:19 PM

Have you tried a small experiment in warmer curing conditions to see if it still happens?