[NTLK] Looking for experts on glueing or welding polyprophylen (PP)

[Daniel Padilla]

Hello Frank.

As you have found, polypropilene is very difficult to bond with itself or
anything else,  but you can try with this adhesive from Loctite:
http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802625323009

If PP doesn't finally work,  can you use acetate sheets?  they're usually
240 microns thick.  They bond really well with that 401 loctite adhesive
adhesive.

regards
Daniel





2018-01-15 1:28 GMT+01:00 Elias Basse <kd5jfe at gmail.com>:

> Try sheet abs. It is available in many surfaces and thicknesses.  And can
> be glued with plastic model cement (Testors Brand).
>
> Best Regards,
>
> Elias
>
> Sent from my iPhone
>
> > On Jan 14, 2018, at 5:51 PM, NewtonTalk <newtontalk at pda-soft.de> wrote:
> >
> > Yes, this is Newton related, but you won't get your hands on the result
> > before I am completely satisfied with it. Which currently I am pretty far
> > from being.
> >
> > I am trying to glue two flat polyprophylen parts together. I make them
> from
> > binders like these:
> >
> >   <https://preview.tinyurl.com/y9u62jdo>
> >
> > These sheets aren't completely smooth, which I think is a good thing
> because
> > there's more surface the glue can cling to. But maybe I'm mistaken here.
> >
> > Unfortunately, so far everything I tried did not work. I tried super glue
> > (cyanoacrylate), UHU, and Pattex. The next day I could still separate
> both
> > as if they had been glued with saliva. Especially when I flexed them. I
> have
> > learned by now that polyprophylen has a very low surface tension, which
> > makes it difficult to glue. This appears to be correct.
> >
> > :-((
> >
> > If anyone on this list happens to have knowledge on how to glue this
> > material, please oh please chime in. Or might there be a chance of
> > connecting those parts using heat, like that from an electric iron? Of
> > course, I could try this out, but I am afraid that the connection might
> only
> > SEEM to be OK and turn out to be flaky over time.
> >
> > I also considered using double-sided sticky tape, but I did not find one
> > that is thin enough. It should not be thicker than what a thin layer of
> > super glue would account for (about 0.05mm or so I think).
> >
> > If you think I am on the wrong track to begin with: Do you know a
> material
> > that is really easy to glue and available in sheets about 0.2 ... 0.3
> > millimeters strong?
> >
> > Thanks
> >
> > Frank
> >
> > -- Newton software and hardware at http://www.pda-soft.de
> >
> >
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> >
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