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connecting polyurethane to aluminium

connecting polyurethane to aluminium

connecting polyurethane to aluminium

(OP)
i want to connect polyurethane to aluminium. it can be done by over mold or glue or other ideas. i need for the surface between the parts to be without any bubbels of air. are there any suggestions for materilas, priemers and methods. the connection has to be very strong.

RE: connecting polyurethane to aluminium

I am a Plastic Designer and in my past experience with my clients I have found it to be beneficial to over-mold the Urethane onto the metal part.  Adhesives were used as a fall back plan and the adhesive materials were perfected especially for each of the companies, which makes them propritary.  I am not sure exactlly what type of parts you are trying to manufacture.  There are a few options that need to be followed for each specific application.  Please reply back if you need further insight.

Live Aloha

RE: connecting polyurethane to aluminium

You can accomplish this bond with a moisture cure urethane.  It will bond exceptionally well to both materials.


I hope I've helped,

John Schrock
www.glubie.com

RE: connecting polyurethane to aluminium

In my experience, the best way to get a really good "bond" between PU and aluminum is with a mechanical lock.  The way I've seen it done is to have holes or passages for the PU to flow thru and lock to the aluminum in an over mold / injection mold process.  For instance, the hub of a wheel, aluminum in your case, has hollow sections around the OD.  The PU is injected onto the hub, and flows into the hole.  If done correctly, this forms a very tough "bond".

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