What sealent for polypropylene?


#1

Can you recommend a sealent that sticks to polypropylene? Silicone lifts right off. Sikaflex 221 apparently is also not suitable.

Today I attached a polycarbonat window. The silicone might seal, but only because its under compression by screws.

I got hot glue to work by roughing up the texture with a chissel. This is only a mechanical interlock. Its not waterproof.


#2

LOL! I was wondering what if anything sticks to PETG. Most epoxy sticks to PLA and NYLON.
I have this I found awhile ago looking for the best nylon epoxy adhesive:

http://na.henkel-adhesives.com/industrial/application-technologies-3533.htm

There is also a Sherwin Williams adhesive site somewhere…

I settled on the Stratasys recommended one in the end, but I doubt it works on PETG or PolyPropylene.


#3

We’ve got that one in France

Primary layer + Cyano + micropowder
https://www.lacollepro.fr/colles-cyanoacrylate/colle-pe-pehd-pp.html


#4

PP and PETG are plastics that are not glueable. It should be very hard to find something.