Gluing TPU

[grunt58]

Looking for adhesive recommendations.

I need to glue a TPU (thermoelastic polyurethane) pad to a piece of aluminum. I'd prefer if the adhesive could maintain its bond up to TPU's max working temp of 200 deg.

Any suggestions?


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[ornerynorsk]

Will any pressure that the TPU part is subjected to going to impose significant potential distortion at the glue joint? One common glue that comes to mind is Gorilla Glue, which is itself a PU based adhesive. I've had good luck with it, but have not used it at elevated temperatures. Just a thought.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[grunt58]

Thanks. I don't think so, the pad is going on a pneumatic gripper finger so the pressure will be inline with the pad. There won't be any shear forces.

I thought of Gorilla Glue but wasn't sure how it would work due to the fact that Gorilla Glue expands when setting up.

Certified SolidWorks Associate
SW2009 X64 SP 1.0
Dell Precision T5400
Nvidia Quadro FX 5600
Xeon 2.5GHz Quad Core, 4GB RAM
XP Pro X64 SP2.0

 

[MiketheEngineer]

I HATE gorilla glue because it does expand and screws up your careful alignments.

What about epoxies or super glues??

 

[SnTMan]

I would consider, as the absolutely last alternative, contacting a few adhesives manufacturers.

Regards,

Mike

 

[grunt58]

We tried a 2 part epoxy and it seems to work so far. We will apply some heat and see how it goes.

Was just wondering if anyone has done something similar and could offer real world advice.


Certified SolidWorks Associate
SW2009 X64 SP 1.0
Dell Precision T5400
Nvidia Quadro FX 5600
Xeon 2.5GHz Quad Core, 4GB RAM
XP Pro X64 SP2.0

 

[ornerynorsk]

Resorcinol would take the heat, but I've never tried it on metal/rubber. Contact cement would stick, but have never tried it at that temp.

Let us know how the epoxy turns out.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[berkshire]

Look at high peel strength rubber modified epoxies.
or polyurethane sealants like 3M 5200
B.E.

The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor

 

[bobengr]

I've been working with Dow Corning recently for an adhesive that will bond silicone rubber to a painted surface. They quickly provided good suggestions and answered my follow up questions quickly.

http://www.dowcorning.com/content/support/contact_us.aspx

--Bob