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

[Gene Beaird]

Have you tried sheet styrene?  It will also glue well with plastic model cement or methyl ethyl ketone (MEK).  What you are making would probably dictate whether or not it will be strong enough.

Regards,

Gene Beaird,
Pearland, Texas


> On Jan 15, 2018, at 11:00 AM, newtontalk-request at newtontalk.net wrote:
> 
> Message: 4
> Date: Mon, 15 Jan 2018 00:51:38 +0100
> From: "NewtonTalk" <newtontalk at pda-soft.de>
> To: <newtontalk at newtontalk.net>
> Subject: [NTLK] Looking for experts on glueing or welding
> 	polyprophylen (PP)
> Message-ID: <001801d38d92$aa4497c0$fecdc740$@de>
> Content-Type: text/plain;	charset="US-ASCII"
> 
> 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