Talk Composites - The Forum for Advanced Composites

Skinning amine blush

http://www.talkcomposites.com/Topic19536.aspx

By thanasiss3 - 10/13/2015 8:26:58 PM

Hi everyone,i skin parts for automotive interiors with cf using the ec high temp epoxy resin,after the wrapping i wet the fabric with epoxy,after 24hours i sand with 120grit and after that add 2 layers of epoxy when the first is at tack free stage.
After that i put the parts in an oven and ramp the temp at 100celcius,after that i have too much amine blush,it can stick to my hand,is this normal?
Is there any chance  the epoxy to keep blushing under the 2k clearcoat and give me a yellowish pary?
I must wait more time to cure after the complete cycle at the oven?
By thanasiss3 - 11/6/2015 9:19:54 PM

In greece under a hot summer day i measure 85 celcious into the car,it became extremely hot and the other clear resins i used,made a heavy  print through,i post curedbthem but their tg was 60-70,so they became printed through.
I post cure thw ht resin at 95celsious so the parts stay glass reflection alla the time!

'Low' tg resin 

http://www.talkcomposites.com/Uploads/Images/efa8214a-549b-4f25-9870-089.jpeg