Total weight of resin and carbon cloth

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Total weight of resin and carbon cloth

Author	Message
CurlyHutty	CurlyHutty posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 2, Visits: 5	Brilliant - thanks folks.
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Zorongo	Zorongo posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 40, Visits: 330	I always mix same resin as cloth by weight for small parts. Or a bit lower. And is more than enough. Part of the resin will remain on your roller, part on the tray and part on the mixing pot and stick. So, from the weight point of view is easy to reach ratios close to 100 / 85 and a bit lower ( being 85 resin amount ) for plates and medium to big size parts. 100 / 100 is OK for small parts, where resin used on try, roller etc represent a high amount on the total ratio. If weight is VERY important, work your roller hard, "dry" it before impregnating the fiber, and squeege after impregnating. Limiting your mix amount will make you roll harder. Will push you on the resin reduction direction. And you'll earn a bit of money. Limiting your resin ratio is OK If you have a good consolidation pressure, which will help / improve interlaminar bonding. Those ratios will leave any pinholes on your part´s suface.
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Dravis	Dravis posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 592, Visits: 1.9K	its easy to work out ... A good wet-lay with compression will give you nearly 50-50 Resin to cloth ratio .. 200 gsm cloth + 200 gsm Resin -- Multiply from there .. Depending on how you "finish" your flat sheets (I use a mirror and peel-ply on the back) - perforated film + a layer of cloth to absorb excess resin on top-) you will need a bit more than 200 grams of resin for a sq. metre of 200gsm CF. If you're doing Aero stuff --- Vacuum will get you the last bit of the way towards a better Resin to fibre ratio. "Sapere Aude"... Dare to KNOW! The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind... 103% of all people do not understand statistics... Do not adjust our mind, theres a fault in reality :-)
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CurlyHutty	CurlyHutty posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 2, Visits: 5	Hi - I have searched for the answer to this - to no avail. I would have thought it was an FAQ ... Are there any rules of thumb to estimate the total weight of a carbon-fibre layup i.e. the weight of the carbon cloth plus the resin? E.g: 1 layer of 200sgm CF including wet-lay epoxy = XX gsm 2 layers of 200sgm CF including wet-lay epoxy = YY gsm 3 layers of 200sgm CF including wet-lay epoxy = ZZ gsm Is there a 'standard' ratio of CF to resin? I only plan to make flat sheets, wet-lay, not infusion, but with pressure to squeeze out as much epoxy as possible. I am planning to make some aero parts so weight is important. Thanks! CH
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