How to repair a composite mold
How to repair a composite mold
(OP)
A carbon – epoxy mold .200” thick was donated by an aeronautical composite manufacturer (we don't know exactly what resin and tissue was used to manufacture the mold). This mold has a .250” hole machined throw. We intend to laminate few parts (8-10) from fiberglass epoxy 350F autoclave cure cycle. We can not vacuum bag the part because the mold will leak (the autoclave 90psi positive pressure will push the nitrogen under the bag).
Do you know how to repair the mold hole, on fact can you recommend a resin system and a reparation procedure to withstand 20 cure cycles (expansion – contraction) without leaking?
The parts need to be consistent because we intend to show them in a contest between university faculties . . .
Thanks.
Do you know how to repair the mold hole, on fact can you recommend a resin system and a reparation procedure to withstand 20 cure cycles (expansion – contraction) without leaking?
The parts need to be consistent because we intend to show them in a contest between university faculties . . .
Thanks.





RE: How to repair a composite mold
You may not get 20 parts out of it, without doing a second repair, but you may.
Wes C.
------------------------------
No trees were killed in the sending of this message, but a large number of electrons were terribly inconvenienced.
RE: How to repair a composite mold
yesterday, going throwgh net, i saw an interesting thing
http://sotopanel.com/?page_id=15
oh,i want to know this unique method...
carbon is one of the most expensive material....
RE: How to repair a composite mold
RE: How to repair a composite mold
The stuff you are going to use for parts should be OK for this as long as it is cured at a higher temp than your parts before you start laying up parts.
You just want a vacuum seal in case the polyester shrinks and falls out.
B.E.
RE: How to repair a composite mold