Talk Composites - The Forum for Advanced Composites

unimould timing

http://www.talkcomposites.com/Topic2549.aspx

By svedberg - 8/6/2012 9:05:16 PM

Hi!

We're using the unimould system for the first time, and just wanted to get the timing explained once and for all.

After the gelcoat has been applied, we are going to let it sit for approximately 20 hrs before we continue with the  coupling coat layer. Is this OK?



How many hrs would you recommend between the coupling coat and the polyester reinforcement?

Temperature will be around 18-20 dgrs C.

Cheers/

Lasse Svedberg
By ajb100 - 11/24/2012 10:56:45 PM

Even a little bit of heat can speed things along nicely. My last mould was .5m x .5m and got it done in 4 hours by catalysing at 1.5-2% and once applied, heating to 40'c until ready for the next layer.

For the reinforcement, that was heated until the resin exothermed and then left over night and was ready to use in the morning.

Not sure if that's all recommended but it works perfectly for me