Talk Composites - The Forum for Advanced Composites

Methods of post cure for XCR?

http://www.talkcomposites.com/Topic41590.aspx

By jameslawson - 8/25/2023 3:20:31 PM

I have made a carbon skinned car bonnet using the XCR resin system, the time for post curing is now required before a final block sand and paint.

Most bodyshops I have spoken to either want an entire full days rate due to their booth being taken out of action; or are generally pushing back.

I'm not sure if I should be considering heat lamps due to how the heat would be focused, I remember a long while ago reading about electric blankets though and began wondering if this would be a preferred method?

I had to fill the inside of the bonnet with a 2 part expanding foam to stop it inverting whilst under vacuum, this however is acting a bit like an insulator and therefore stops me from my original plan which was to post cure it using engine heat. I tried driving for an hour today and it was luke warm at best.
By Warren (Staff) - 9/5/2023 8:24:14 AM

It can be a difficult one when you don't have access to an oven. Often leaving it in the hot sun is effective but you do risk the resin sinking a little so best done before any final flat and polish. Heat mats etc can work.  The key is an even and consistent heat source for the duration of the post cure.