Bonding Carbon Fibre to Aluminium

Talk Composites - The Forum for Advanced Composites

Back

Bonding Carbon Fibre to Aluminium

Author	Message
Aaron Howe	Aaron Howe posted 6 Years Ago Topic Details
Group: Forum Members Posts: 4, Visits: 8	Hi, I've bought the carbon fibre naca vent from you which I'll be bonding to an aluminium bonnet to feed cool air to ITBs. Looking through your store the permabond 515 looked like it would fit the bill but I would appreciate some advice from someone who knows more than I do. Additionally how much would I need to bond the duct as its sold in 50ml or 400ml quantities. I've also been told I need to seal the aluminium before bonding carbon fibre to it otherwise it would cause corrosion. Is there a specific product for sealing it or can I just use a normal epoxy primer? Cheers Aaron
	Reply Like 1
Dravis	Dravis posted 6 Years Ago Post Details
Group: Forum Members Posts: 592, Visits: 1.9K	+x Aaron Howe - 7/2/2018 10:09:10 AM Hi, I've bought the carbon fibre naca vent from you which I'll be bonding to an aluminium bonnet to feed cool air to ITBs. Looking through your store the permabond 515 looked like it would fit the bill but I would appreciate some advice from someone who knows more than I do. Additionally how much would I need to bond the duct as its sold in 50ml or 400ml quantities. I've also been told I need to seal the aluminium before bonding carbon fibre to it otherwise it would cause corrosion. Is there a specific product for sealing it or can I just use a normal epoxy primer? Cheers Aaron Hi Aaron! You should not use any kind of primer under the bonding. If your bonnet is already painted with a high quality 2-component auto paint- the CF can be bonded to that and be as strong as bonding it directly to the aluminium You will need to key the paint with something like 240 grit wetsanding paper then I would use the EC Vuduglu to bond it If you want to bond directly to aluminium, you will need to key and very thoroughly degrease the aluminium surface, then bond immediately.to prevent any oxidation of the aluminium Permabond 515 will bond quite well, but the VM100 Vuduglu is just as strong- and it can make a very nice black bonding line under the CF- "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 :-)
	Reply Like 1
Aaron Howe	Aaron Howe posted 6 Years Ago Post Details
Group: Forum Members Posts: 4, Visits: 8	+x Dravis - 7/2/2018 11:09:26 AM +x Aaron Howe - 7/2/2018 10:09:10 AM Hi, I've bought the carbon fibre naca vent from you which I'll be bonding to an aluminium bonnet to feed cool air to ITBs. Looking through your store the permabond 515 looked like it would fit the bill but I would appreciate some advice from someone who knows more than I do. Additionally how much would I need to bond the duct as its sold in 50ml or 400ml quantities. I've also been told I need to seal the aluminium before bonding carbon fibre to it otherwise it would cause corrosion. Is there a specific product for sealing it or can I just use a normal epoxy primer? Cheers Aaron Hi Aaron! You should not use any kind of primer under the bonding. If your bonnet is already painted with a high quality 2-component auto paint- the CF can be bonded to that and be as strong as bonding it directly to the aluminium You will need to key the paint with something like 240 grit wetsanding paper then I would use the EC Vuduglu to bond it If you want to bond directly to aluminium, you will need to key and very thoroughly degrease the aluminium surface, then bond immediately.to prevent any oxidation of the aluminium Permabond 515 will bond quite well, but the VM100 Vuduglu is just as strong- and it can make a very nice black bonding line under the CF- You're a star thanks very much for the quick response. Its a standard bonnet with factory paint so I assume it's 2 pack paint already. Do you know how much of the VM100 Vuduglu I'd need for the Naca Vent that's sold here? I see it's sold in 25, 50 or 400ml.
	Reply Like 1
Dravis	Dravis posted 6 Years Ago Post Details
Group: Forum Members Posts: 592, Visits: 1.9K	You will only need the smallest amount - i.e. the 25 ml syringe should be enough .. that also saves you buying the "gun" for the 50 ml "cartridge" Really you can use any good epoxy or methacrylate bonding glue it will be easily strong enough for boding in the ducts Good luck ,and please post pics :-D "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 :-)
	Reply Like 1
Steve Broad	Steve Broad posted 6 Years Ago Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	+x Aaron Howe - 7/2/2018 10:09:10 AM Hi, I've bought the carbon fibre naca vent from you which I'll be bonding to an aluminium bonnet to feed cool air to ITBs. Looking through your store the permabond 515 looked like it would fit the bill but I would appreciate some advice from someone who knows more than I do. Additionally how much would I need to bond the duct as its sold in 50ml or 400ml quantities. I've also been told I need to seal the aluminium before bonding carbon fibre to it otherwise it would cause corrosion. Is there a specific product for sealing it or can I just use a normal epoxy primer? Cheers Aaron Hi Aaron Where on the bonnet are you planning to put the duct? I ask this because part of the bonnet will have low pressure air flowing over it (usually the middle section). If the duct isn't located in a high pressure area there is a chance that air will flow OUT of the engine bay rather than in! Regards Steve
	Reply Like 1
Aaron Howe	Aaron Howe posted 6 Years Ago Post Details
Group: Forum Members Posts: 4, Visits: 8	Pic below of the planned location. Sorry for the poor MS paint skills not my car but just one I used to illustrate where I'm planning to put it.
	Reply Like 1
Steve Broad	Steve Broad posted 6 Years Ago Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	You are in an area of reduced pressure. When fitted, tape some 4" long wool tufts in and around the duct to check that the air is actually flowing in rather than out. If you can't see get someone to drive in front and video the action. Mind you, once fitted I doubt that you would want to move it, even if it proved ineffective :-)
	Reply Like 1
Aaron Howe	Aaron Howe posted 6 Years Ago Post Details
Group: Forum Members Posts: 4, Visits: 8	yeah it would be a bit late once I'd cut the hole and stuck it on. So you think further forward would be safer? I could always create a tunnel under the bonnet to make sure the airflow underneath is directed to the ITBs.
	Reply Like 1
Steve Broad	Steve Broad posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	+x Aaron Howe - 7/3/2018 8:18:13 AM yeah it would be a bit late once I'd cut the hole and stuck it on. So you think further forward would be safer? I could always create a tunnel under the bonnet to make sure the airflow underneath is directed to the ITBs. Better off further back. However, aesthetics do come into it as you are not building a race car :-) Also, without actual data for your car I can't give you the best location. The existing vents, are they supposed to vent hot air from the engine bay? (I realise that this isn't your car) Are they OEM?
	Reply Like 2