Curing autoclave prepreg in an oven


Curing autoclave prepreg in an oven
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Henkka
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Henkka
posted 6 Years Ago HOT
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Hi,

Is it possible to cure prepregs that are supposed to be used in an autoclave using an oven? The manufacturer recommends 85 psi of autoclave pressure and 177 degrees C temperatures for curing and I'm wondering how critical the pressure is to achieve good results. 
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Curing autoclave prepreg in an oven
Henkka - 6 Years Ago
     It will result in a lot of porosity. i would recommend against it.
SleepingAwake - 6 Years Ago
     If you do not have an autoclave, lets try some prepregs that are dedicated for OOA manufacturing (out of autoclave curing). Easy Composites have that products. You can have good results with OOA if.....
ArturK - 6 Years Ago
     I bought some out of date autoclave (just approaching its best before date) carbon from a supplier at a very good price, it would have been rude not to. Their help desk said that it could be used OOA...
Steve Broad - 6 Years Ago
             Have you actually tried it though, did it work as described? I've tried samples of autoclave pre-preg from several different suppliers who all claim that it will work OOA. None of them gave good...
Hanaldo - 6 Years Ago
                 I have no idea of porosity but there are very few pin holes. As I paint the carbon I am not interested in a mirror finish so my moulds aren't polished so can't speak for the quality of a shiny...
Steve Broad - 6 Years Ago
     I think Steve is on to something. The resin viscosity is temperature related, so if you can get to the right curing temperatures then you should be ok. Unless the resin is very high viscosity and...
explorecomposites - 6 Years Ago
             The 8 hours is due to my failing memory. On checking my notes it is an hour :-)
Steve Broad - 6 Years Ago
     Guys, im sorry for little off topic, but at the moment i don't have a facility to store large curing equipment at home. Is there any other way to work on prepreg without autoclave or oven ? Also...
marslo - 5 Years Ago
             The definition of an oven is very loose. As long as you can sustain a temperature of around 100-120 deg C for around 4 hours (temp and time will vary depending on the resin used in the carbon but thi...
Steve Broad - 5 Years Ago
                 Hi Steve, thank you for prompt answer. True as long i can maintain the temperature i should be o.k . I think my biggest problem will be the place now. Im renting the flat now with no spare space so i...
marslo - 5 Years Ago
                     No problem For small parts I use an old electric domestic oven. Temperature ramping is a little crude but it seems to work, at least for the parts I make. A rented flat does restrict you somewhat bu...
Steve Broad - 5 Years Ago
                         Cheers Steve, did you heard or know about any spaces to rent or for this purpose just in case if my ms will kick me out from the kitchen ? Its just a brief idea i am looking for, as storage places.....
marslo - 5 Years Ago
                             Maybe you should consider infusion rather than prepreg, or even traditional vacuum bagging until you have the space for an oven. I am in Essex so nowhere near your area.
Steve Broad - 5 Years Ago

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