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Vari Preg Curing Time
Vari Preg Curing Time
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scottracing
scottracing
posted 11 Years Ago
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Hi there
Im looking at making some automotive and bicycle parts and I would like to use the vari-preg system as I have a laboratory oven im converting to cure composites.
In the video you say that curing time for the prepreg is 8 hours at 80°c, for me thats a bit too long as I dont want to leave parts curing overnight, especially if i get a bag burst.
Ive looked on the site but may be not hard enough, can the cure cycle time be reduced if the temperature is increased? and do you have to have a special ramp and dwell period during the cure if so?
Many thanks
Garry
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morepower
morepower
posted 11 Years Ago
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Speeding up cure time can lead to more pinholes.. You need to know the best temp for the resin to flow through the material then get to the gel stage before you ramp up to speed up the cure time. That will take some experimenting with the material. I use a very very good OOA pre-preg which has a cure cycle with a suggested ramp speed. But for the best results I have worked out a cure cycle for my oven and my parts which works perfectly. Although it is quite different to the suggested cycle. It took me about 6 months of testing to work out the best cure cycle and breather stack. Even placement of peel ply makes a big difference so you need to have a play with a simple mould and use that mould for each test..
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Vari Preg Curing Time
scottracing
-
11 Years Ago
Speeding up cure time can lead to more pinholes.. You need to know the best temp for the resin to...
morepower
-
11 Years Ago
The reason for the low temperature is as morepower suggests. For surfacing pre-pregs we tend to go...
Warren (Staff)
-
11 Years Ago
Thanks for the tips guys, morepower can you tell me what prepreg you are using? I need to fins a...
scottracing
-
11 Years Ago
Hi Garry , Our Easy-Preg and Vari-Preg systems are not low temperature cure prepregs (I...
Matt (Staff)
-
11 Years Ago
Hi Matt Thanks for the info, Im used to working with prepregs in motorsport and aircraft use and...
scottracing
-
11 Years Ago
Hi Garry, if you are referring to the Unimould system then the answer on a 120 degree cure would...
Paul (Staff)
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11 Years Ago
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