Mavic82 Posted January 31, 2014 Share Posted January 31, 2014 I would like some guidance on a specific epoxy to structurally bond aluminium to carbon. All small parts and temps will be up to 100 degC. Looking for a 'proper' adhesive rather than just alraldite. But with an ambient cure and reasonably quick grab. Thanks Link to comment Share on other sites More sharing options...
2GBR Posted January 31, 2014 Share Posted January 31, 2014 Carbon to Carbon or Carbon to almost anything 3M Scotch weld DP490 epoxy structural adhesive Link to comment Share on other sites More sharing options...
elie boone Posted February 1, 2014 Share Posted February 1, 2014 this is very strong but only goes to 80°C and has a 1h temp resistance up to 140°C Link to comment Share on other sites More sharing options...
Wrightpayne Posted February 1, 2014 Share Posted February 1, 2014 Watching this with interest as wondering if I can epoxy cable guides on an ally bike frame - ally to ally. These would be to secure a hydraulic cable not a cable stop for cable brakes. Tried one of cable stop converters but not impressed! I'm not sure how they're attached as the one guide already on the frame has no visible weld. The cable stops are defo welded. Ian Link to comment Share on other sites More sharing options...
Mavic82 Posted February 1, 2014 Author Share Posted February 1, 2014 Thanks for the two options guys. I will research these and see if they fit the bill for me Ian will keep you posted. So I guess in your case surface area is small and it will be loaded in shear? Link to comment Share on other sites More sharing options...
Simon Ferguson Posted February 1, 2014 Share Posted February 1, 2014 Hi, If you go on the Henkel site you can either leave an email or get the phone number and phone and I am sure they will help. I was amazed at the service from such a huge company. I emailed about ten at night and they phoned back 9am the next morning. They make a glue for almost anything. We were glueing instead of bolting front side wings, they ping off if you have a bump doing less damage. Fortunately we haven't had a prang and they are very firmly on there five years and no sign of leaving the car. Hope you find the right goo Link to comment Share on other sites More sharing options...
The Pikey Posted February 1, 2014 Share Posted February 1, 2014 Is epoxy really the best adhesive to use? Unless there is a really good key the epoxy won't stick to aluminium too well and also normal epoxy don't like heat. I think I would be seeing if a contact adhesive like Thixothix would work better. Jason Link to comment Share on other sites More sharing options...
Mavic82 Posted February 1, 2014 Author Share Posted February 1, 2014 Jason, I really don't think a contact adhesive is going to cut it. This needs to be a structural joint and the surface areas are not significant. Unless you can explain differently as I may be missing something? Epoxy or acrylic adhesive of the right type will certainly work, they bond carbon and alloy tubs with it so for my little project should be fine. Also sent email to Henkel, thanks Simon. Cheers Guy Edited by - Mavic82 on 1 Feb 2014 22:34:18 Link to comment Share on other sites More sharing options...
The Pikey Posted February 2, 2014 Share Posted February 2, 2014 Guy What is that shape and size of that parts you are gluing. i had it in my mind you were gluing sheet to sheet for reason. Alternatively I have a Henkle product here called Hysol 9462 which we could glue a test piece if you are passing my way. Jason Edited by - Jason Fletcher on 2 Feb 2014 08:43:31 Link to comment Share on other sites More sharing options...
Mavic82 Posted February 2, 2014 Author Share Posted February 2, 2014 I am bonding some 10mm ally angle to 1mm carbon sheet If funds allow I may use carbon angle but probably not. Will look at the Henkel stuff on there web site. Cheers Link to comment Share on other sites More sharing options...
The Pikey Posted February 2, 2014 Share Posted February 2, 2014 Ah right. I'm still thinking that a structural polyurethane from a car body shop would work well but Hysol 9462 will also do a good job of this. The Hysol would work even better if the aly angle had a series of holes down it's length. Jason Link to comment Share on other sites More sharing options...
2GBR Posted February 3, 2014 Share Posted February 3, 2014 At 10mm you have a big enough surface area DP490 would do the job fine, As long as keyed and cleaned with the correct product before hand. But if only a one off better to send it where the product is used daily as you need the two part mixing gun and a tube of DP, If in no hurry i could do it when i next have a tube open. Often a free sample is available to evaluate which could be the way forward. Link to comment Share on other sites More sharing options...
Delbert Posted February 3, 2014 Share Posted February 3, 2014 I would suggest that the elements will need to be primed also- this is true when applying / bonding structural glazing and assuming I have interpreted correctly this bond will be loaded So what effect will the primer have on the carbon elements ? Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted February 3, 2014 Share Posted February 3, 2014 Quoting Wrightpayne: Watching this with interest as wondering if I can epoxy cable guides on an ally bike frame - ally to ally. These would be to secure a hydraulic cable not a cable stop for cable brakes. Tried one of cable stop converters but not impressed! I'm not sure how they're attached as the one guide already on the frame has no visible weld. The cable stops are defo welded. IanIan, will send you an email. Link to comment Share on other sites More sharing options...
Grim Reaper Posted February 3, 2014 Share Posted February 3, 2014 Sikaflex 291 (windscreen bonding sealant/adhesive)? Link to comment Share on other sites More sharing options...
elie boone Posted February 4, 2014 Share Posted February 4, 2014 Windscreen bonding/sealant adhesives are in general not UV resitend, Sikaflex 291 is not a windscreen sealant Link to comment Share on other sites More sharing options...
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