They are fabrics (glass, kevlar, graphite, whatever) that are already are soaked with epoxy. You simply apply them to the surface and you are done. They are put on a sheet of plastic and rolled up in a tube. The epoxy is kept from hardening by storing the prepreg in a freezer. You probably won't be working with prepregs at home. They are usually used in aircraft factories to speed up layups and keep the amount of epoxy consistent. I worked in the composits lab in college and we had some in the freezer that were there basically just to show the students what they looked like.
Don't ask me how they ship them and keep them frozen. -----Original Message----- From: Steve and Lori McGee <[email protected]> Sent: Oct 24, 2003 4:57 PM To: KR builders and pilots <[email protected]> Subject: KR>Newbie question What exactly are prepregs? Steve [email protected] _______________________________________________ see KRnet list details at http://www.krnet.org/instructions.html
