Adhesive suggestion needed

[trainguy]

Hi all.

I need to spec. a decent adhesive for bonding a 0.050 x 12 x 12 (5052) alum. sheet to an (extremely expensive) aluminum honeycomb energy absorbing crush element.

The bond isn't carrying any real load across the interface, but it's useful for keeping the crush element in position.

Any ideas?

tg

 

[GregLocock]

what are your constraints/wants? so far anything from flour paste upwards would work.

Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[IFRs]

Devcon "Metal Welder"
3M Acrylic adhesive tape

 

[rmw]

I agree with GregLocock. Not knowing any more at this time than we do, I am thinking that chewing gum might work.

rmw

 

[MikeHalloran]

Check with the honeycomb supplier, but I think that honeycomb requires a pretty good bond to the face plates in order to develop its full crush strength.




Mike Halloran
Pembroke Pines, FL, USA

 

[IFRs]

I have used honeycomb extensively for years. The stuff we use has an aluminum core bonded to aluminum skins. The adhesive is heat cured at 300DegF or thereabouts and the skins have to be specially treated. I have also used a few adhesives to bond aluminum to aluminum both in the shop and field with excellent results. We used a PRC-Desoto "PR-1422" polysulfide based two part epoxy and also Devcon "Metal Welder" which is a methacrylate based epoxy. Both have worked very well for us. Neither is cheap. Both are available in small quantities. Both smell to high heaven and require good ventilation, PPE and handling techniques.

 

[kenre]

I have used Fusor 2 part metal adhesives. Commonly used to bond automotive sheet metals. I have used it on aluminium many times, for high stress applications. Highly recommended.

Ken