Talk Composites - The Forum for Advanced Composites

Getting a whitish film on my carbon fiber

http://www.talkcomposites.com/Topic14077.aspx

By Crixus - 12/6/2014 3:29:42 AM

So I am using AeroMarine Epoxy Resin #300 and Hardener #21 along with MG Chemicals Epoxy Mold Release. I mixed the epoxies together and placed my first coat on the silicone mold and let it stand for a couple hours. Then I placed the carbon fiber sheets down and coated each layer with more epoxy. When I take it out, I'm getting a white film on the surface that is touching the silicone mold. I've tried searching for the solution with no luck. So I am hoping you all can help me. Thanks you. For those curious, this is a UFO body for a quad copter.
http://www.talkcomposites.com/Uploads/Images/905774c1-8489-4d53-9ae2-578e.jpghttp://www.talkcomposites.com/Uploads/Images/8d59ba08-bdaa-4d7a-b808-954e.jpghttp://www.talkcomposites.com/Uploads/Images/f28394c8-4c00-445c-aa97-c16e.jpg
By scottracing - 12/7/2014 9:41:40 PM

it looks as though you arent getting decent consolidation into the features of the part,areyou vacuum bagging it at all? I would suggest cutting stars over the round features on the first ply then putting a cap over the top, and if you can trying to put it into a vacuum bag, even the clothes type ones using a suitable plastic film as a barrier soit doesnt stick to the bag.