Need help with prepeg technology

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Need help with prepeg technology

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ZairMirza	ZairMirza posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 3, Visits: 19	Hello. I'm Zair from Armenia , i newbie in carboan foaming and i need help pls. For first i present as i make carbon part 1) I make aluminium mold 2) I put carbon prepreg into the mould ( do not have photo) 3) I make special vacuum thermopocket 4) Make vacuum with my compressor and put it into oven. 30 minutes 100C and 2 Hours 140C 5) When it finished i have some problem with parts, check photos The edges are not glued. I think that problem is that the vacuum is not enough effort to flatten the material inside the mold. I think autoclave can resolve it problem, but it so expensive for me Pls how i can resolve it?
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scottracing	scottracing posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 460, Visits: 5.2K	I cant tell from your photos of the bag but are you using two bags? An internal bladder and an external bag? If not then thats one of the causes of the poor consolidation. are you also maintaining vacuum while curing in the oven? Can you tell us what the part is for? It looks like a catch tank of some sort? If its not for rrtaining fluods you might be better making the two halves then bonding them.afterwards. if you do neet to make a pressurised tank you will need to have a method of an intrrnal mandrel or core. This could be a vacuum bag or a pressurised bycicle inner tube or even a soluble core.
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ZairMirza	ZairMirza posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 3, Visits: 19	scottracing (11/01/2015) I cant tell from your photos of the bag but are you using two bags? An internal bladder and an external bag? If not then thats one of the causes of the poor consolidation. are you also maintaining vacuum while curing in the oven? Can you tell us what the part is for? It looks like a catch tank of some sort? If its not for rrtaining fluods you might be better making the two halves then bonding them.afterwards. if you do neet to make a pressurised tank you will need to have a method of an intrrnal mandrel or core. This could be a vacuum bag or a pressurised bycicle inner tube or even a soluble core.[/quote] Big thx for your answer. 1) Yes, we use one bag. how we can use two bags? 2) Yes, compressor is make vacuum all time in oven 3) It's test part, i try to make parts before big detail for rc helicopter 4) Two halves maybe, but it need to be strong. What bonding method i can use? Maybe links or youtube videos? 5)I have bad English, can you pls say for me about this method? links or youtube? Big thx Edited 10 Years Ago by ZairMirza
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Need help with prepeg technology

ZairMirza - 10 Years Ago

I cant tell from your photos of the bag but are you using two bags? An internal bladder and an...

scottracing - 10 Years Ago

[b]scottracing (11/01/2015)[/b][hr]I cant tell from your photos of the bag but are you using two...

ZairMirza - 10 Years Ago

In future i want make this part What better and cheap - make 1 detail or two halves and...

ZairMirza - 10 Years Ago

Just a note on designing CF parts ... You will get much stronger parts by having a proper "radius"...

Dravis - 10 Years Ago

Big thx for your answer. 1) Yes, we use one bag. how we can use two bags? You need to run one bag...

scottracing - 10 Years Ago

It looks like your one bag technique should work ok as it then folds back over the whole mould same...

Fasta - 10 Years Ago

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