RESIN INFUSION DE-MOULDING PROBLEMS


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andrea-breaker
andrea-breaker
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Good morning to everyone!  

Im Mr. Andrea from Italy, I'man aerospace engineer student at LaSapienza University in Rome. I'm not newwith the composite, but I decided to upgrade all my systems for infusionprocess. I bought almost every things from EasyComposite in the last 2weeks. 

I'm making a special parts ofa motorbike with colored carbon fiber. I had several problems:

1) The first time I waste 2mold because I wasn't able to de-mould it. The surface was seriously damaged.The pictures speaks more than many words. I think it was the wax, because withPVA I don't had problems. 

-     I will post thename/picture of the wax later…

-     I put the mould immediatelyin the oven at 60°C, without waiting the gel time at 20°C. I cure it for 3,5hbefore de-mould.

-     We used 3M Super77 as spray adhesive

http://http://imageshack.com/a/img577/8753/h6kq.jpg

http://http://imageshack.com/a/img839/5239/8vsq.jpg

http://http://imageshack.com/a/img545/3782/ohem.jpg

http://http://imageshack.com/a/img853/1614/v5mp.jpg

http://http://imageshack.com/a/img835/8240/okhn.jpg


2) I decided touse PVA because I always de-mould any complex parts without issue. But in thiscase is always really hard to de-mould the parts; probably because we use sprayadhesive??

http://http://imageshack.com/a/img69/6937/n3wn.jpg

http://http://imageshack.com/a/img196/6765/k4rr.jpg


3) I have a lotof difficult to remove the mesh and the peel ply from the surface. Do you anyadvice of how to place it?

http://http://imageshack.com/a/img842/9254/cdx3.jpg

 

-     The vacuum pressure is 0,8bar. I use 20lt vacuum can (I had it).

-     The mould wasmade by vinylester resin

-     The mould’sgelcoat is polyester

-     We use Forex asflange’s material

-     The mouldsurface is not perfect, I posted some pictures.

-     I followed theMatt Youtube’s video on resin infusion.

I hope that myproblems was easy to solve, because I need to bring this part to a motorbike’sfair.

Thank you toeveryone!! 


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andrea-breaker
andrea-breaker
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Posts: 5, Visits: 22
Thank you guys! The mould was new, maybe less than a day between mould polymerization and use. 
Any other advice on how to place the fabrics inside complex shape? How many spray adhesive can I use without damage the exsternal surface?
GO

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