@algiecompositeaircraft5629 Thanks for creating a very knowledge based account of how to make prepreg. Im keen to try this on a nose cone for my sons race car in New Zealand. Im thinking something like this will be easier in the two part mold. My question. If I used regular resins (west with slow hardener most likely) what generally would it take to reach B stage? Lastly what is your target resin to cloth ratio Are you in that 30-40% range or little higher to allow for some variances? thanks again for a super helpful video Chris
Mate this is an awesome video. Thank you. I'm trying to learn about B Staging. How do you know how long to partially cure it? Is it the resin, the fiber or both that determine the partial curing time? Could you also perform a vacuum infusion instead of using a silicon scraper? Would love it if you'd make a video about it since you've got many years of experience in this industry.
I want to follow this process to make some of my own prepreg. I have look all around but can not find any of the embossed plastic that you have used. Can you please recommend a source that I could get some from?
Mate can you add some links to where you get the resin, carbon and embossed plastic. You might mention this in the narrative but your voice is so quiet you cant be heard over the background noise. Cheers
I can, yes. Resin is from Resin Services, it's HTR350 with the slow hardener, 8401. There are three hardeners, you can blend in some of the fast hardener to make a lower temp curing resin if needed. I never use the medium hardener, just blend fast and slow if you need. Minimum temp cure is 180F for 16 hours, normal cure is 3 hours at 250F, with a slow ramp up.
@@algiecompositeaircraft5629 sir,i have a question,did you put a hardener on that epoxy resin you have spreaded on that carbon fiber to make homemade prepreg?thnx and more power.Godbless
Yes, the epoxy I use is from Resin Services, and is HTR 350, with HT8401 hardener. Needs at least 200 F to partially cure, and 250F for a full cure. Lasts in the freezer for two years or so.
@@algiecompositeaircraft5629 sir can i ask what type of plastic you use for base and do you use the same plastic on top of the carbon sheet to cover the sheets.. Im sorry the question is bit confusing thx
Question: You mention you're autoclaving it after letting it sit to B stage (3 Days at I assume room temperature). In your experience could this be used out of autoclave under vacuum, and cured at a reasonably high homebuilt curing cabinet/apparatus, or is really not worth it without the autoclave?
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@algiecompositeaircraft5629 Thanks for creating a very knowledge based account of how to make prepreg. Im keen to try this on a nose cone for my sons race car in New Zealand. Im thinking something like this will be easier in the two part mold. My question. If I used regular resins (west with slow hardener most likely) what generally would it take to reach B stage? Lastly what is your target resin to cloth ratio Are you in that 30-40% range or little higher to allow for some variances?
thanks again for a super helpful video
Chris
Mate this is an awesome video. Thank you. I'm trying to learn about B Staging. How do you know how long to partially cure it? Is it the resin, the fiber or both that determine the partial curing time? Could you also perform a vacuum infusion instead of using a silicon scraper? Would love it if you'd make a video about it since you've got many years of experience in this industry.
I want to follow this process to make some of my own prepreg. I have look all around but can not find any of the embossed plastic that you have used. Can you please recommend a source that I could get some from?
Dude you dropped some serious knowledge in this video! Thank you! Subscribed :)
Nice video. Very informative. Where are you based?
Mate can you add some links to where you get the resin, carbon and embossed plastic. You might mention this in the narrative but your voice is so quiet you cant be heard over the background noise. Cheers
I can, yes. Resin is from Resin Services, it's HTR350 with the slow hardener, 8401. There are three hardeners, you can blend in some of the fast hardener to make a lower temp curing resin if needed. I never use the medium hardener, just blend fast and slow if you need. Minimum temp cure is 180F for 16 hours, normal cure is 3 hours at 250F, with a slow ramp up.
@@algiecompositeaircraft5629 sir,i have a question,did you put a hardener on that epoxy resin you have spreaded on that carbon fiber to make homemade prepreg?thnx and more power.Godbless
Yes, the epoxy I use is from Resin Services, and is HTR 350, with HT8401 hardener. Needs at least 200 F to partially cure, and 250F for a full cure. Lasts in the freezer for two years or so.
@@algiecompositeaircraft5629 sir can i ask what type of plastic you use for base and do you use the same plastic on top of the carbon sheet to cover the sheets..
Im sorry the question is bit confusing thx
@@rivh12 yes, the same plastic underneath. It is an embossed plastic, makes it easier to remove before you put the prepared in the mould.
Question: You mention you're autoclaving it after letting it sit to B stage (3 Days at I assume room temperature). In your experience could this be used out of autoclave under vacuum, and cured at a reasonably high homebuilt curing cabinet/apparatus, or is really not worth it without the autoclave?
Yes it can I do it regularly 🙌