Hi every one.

Can I skin plastic part with prepreg CF(X C 1 10) instead of wet layup? ,I intend to do skinning for plastic parts at low temp cure 85c degree ,because I need to keep the weave in line..
Thanks

You would get a very poor cosmetic finish that is assuming the plastic can take the heat. 85C is a low temperature cure.  If you have to add multiple layers of resin anyway then don't waste the expense of the Pre-preg when a stabilised fabric will do fine at holding the weave alignment.  YOu can find our ProFinish fabric here: ProFinish Carbon Fibre 2/2 Twill 3k 210g


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

+x

 

Warren (Staff) - 9/18/2018 10:06:03 AM

You would get a very poor cosmetic finish that is assuming the plastic can take the heat. 85C is a low temperature cure.  If you have to add multiple layers of resin anyway then don't waste the expense of the Pre-preg when a stabilised fabric will do fine at holding the weave alignment.  YOu can find our ProFinish fabric here: ProFinish Carbon Fibre 2/2 Twill 3k 210g

Dear Warren,

Many thank you for your advice,
I have ProFinish Carbon Fiber Cloth 2/2 Twill, which was from Easycomposite and i intend to use for these parts also,
But my parts have no smooth surface ( 2 mouting points),,and i think it will effect to the weave appearance at these areas,so i plan to use the XC110,.
and i will do the same process for prepreg ,i will devide and cut the prepreg according to the actual mouting points shape ,then use vacumm bag with oven,.for the finish i will aplly multiple  wet epoxy to get the finish ,

Please help comment on my above plan if available.
Thank you

Plastic parts are going to soften and deform a lot with the heat and vacuum, you will end up with them being totally the wrong shape.

I would rethink your approach - pre-preg isn't the material for this job. These parts aren't that tricky, youre just over thinking it. Make templates of your part surfaces and use them to cut out the Pro Finish the same as you would pre-preg. Go carefully and you wont upset the weave.

You can use a spray adhesive such as 3M Super 77 to keep the dry fabric in place on the part and apply resin over. Another method is to apply the resin over the fabric on a flat surface and leave it to cure to a gel like state (past the handling time). Then, use this semi cured layup and lay it over your part like prepreg. This way, the fabric stays together like prepreg, but there is no need to apply any heat. At 85c you'll very likely get warpage of your plastic part.