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topic 18959

Bonding poly(propylene) to aluminium


2003

I am looking for a way to bond poly(propylene) to Aluminium. The system must be able to survive 130 degrees for 45 minutes in a steam steriliser. It has been said that it may be necessary to pre-treat the poly(propylene). Could you suggest the best way to do this? Also, would you have any suggestions of a suitable adhesive that would withstand the sterilisation conditions?

Thank you,

Ruth Thomson
- Leeds, England


2003

Ruth,

You didn't indicate if the 130 degrees was F or C ... and if the latter, oh dear!

There are methods, which I am personally not acquainted with, of bonding to PP.

However, I'd feel much happier if you had a mechanical rather than a cemented bond ... as as PP has a very high coeff. of thermal expansion, this might be route to go.

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).



2003

Rohm & Hass has a epoxy based adhesive with finely dispersed polypropylene beads in it. We use it to bond polypropylene laminates to various metal substrates with great success.

Ronald Zeeman
Continuous Colour Coat - Brampton, ON, Canada



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