93EXCivic
93EXCivic MegaDork
7/31/13 11:25 a.m.

I need an epoxy that will be able to bond stainless steel to PVC or polycarbonate and will be able to stand up to a decent amount of vibration. Anyone know of a good product?

Duke
Duke PowerDork
7/31/13 11:27 a.m.

Good luck getting anything to glue to delrin.

93EXCivic
93EXCivic MegaDork
7/31/13 11:28 a.m.
Duke wrote: Good luck getting *anything* to glue to delrin.

Why did I put delrin? I mean polycarbonate. oops.

mtn
mtn UltimaDork
7/31/13 11:36 a.m.

There is this great product--a pressure-sensitive uni-directional bonding strip coated with polyethylene--that should do the trick.

ultraclyde
ultraclyde Dork
7/31/13 12:00 p.m.

along similar lines as mtn, but it might actually work - look at the 3M VHB double sided foam tape - the kind they use to stick plastic auto emblems to painted metal. We used it in the sign biz for plastic/baremetal adhesion and it works really well IF the surfaces are clean prepped AND you don't expect it to hold a lot of weight.

foxtrapper
foxtrapper PowerDork
7/31/13 12:54 p.m.

What about Loctite 380 Black Max?

https://tds.us.henkel.com//NA/UT/HNAUTTDS.nsf/web/484E2F2E99F65C0B882571870000D728/$File/380-EN.pdf

carbon
carbon New Reader
8/10/13 2:31 a.m.

plexus

JoeyM
JoeyM Mod Squad
8/10/13 5:30 a.m.

two thoughts
1) talk to guys who restore corvettes.....they have to be using some strong glue to hold fiberglass panels to hydro-formed aluminum chassis.

2) primerless urethane: most windshields on modern cars are glued on, and that's the stuff they use. I've heard tell that it is REALLY strong. You can buy a small tube of it at your local advance autoparts and play with it to see if it will work for your purposes

novaderrik
novaderrik UberDork
8/10/13 10:01 a.m.

Corvette guys are already restoring the cars that have aluminum chassis with hydroformed rails?

cwh
cwh PowerDork
8/10/13 10:08 a.m.

Repairing.

JoeyM
JoeyM Mod Squad
8/10/13 10:10 a.m.

<== not a 'vette guy

novaderrik wrote: Corvette guys are already restoring the cars that have aluminum chassis with hydroformed rails?

I think so...."repair" would have been a better word than "restore", though. Even before the hydroforming, though, the same issue existed; the cars have composite panels and metal frames.

http://www.mamotorworks.com/corvette-vette-panel-adhesive-filler-by-evercoat-1-419-11473.html
http://forums.corvetteforum.com/c3-tech-performance/2038520-body-panel-glue-suggestions.html
http://forums.corvetteforum.com/paint-body/2795854-body-panel-adhesive-question.html

Oh, and while I'm posting links, here are some for primerless urethane window adhesive.
http://www.amazon.com/Windshield-Urethane-Primerless-Adhesive-Sealant/dp/B009LF53P2
http://www.dowautomotive.com/products/betaseal/u418.htm
http://dominionsureseal.com/index.php/component/djcatalog2/item/10-glass/109-fast-cure-primer-less-urethane-
http://www.windshield-repair-forum.com/viewtopic.php?t=5112

EDIT: Thanks, cwh. That's exactly what I meant

motomoron
motomoron Dork
8/10/13 11:24 a.m.
93EXCivic wrote: I need an epoxy that will be able to bond stainless steel to PVC or polycarbonate and will be able to stand up to a decent amount of vibration. Anyone know of a good product?

More information is needed. The reason your question cannot be answered is that I can't tell if you're objective is to do something impossible. Or not.

"I want to glue one end of a 1/4" stainless steel rod to a piece of 2" thick PVC plate. It will only be loaded 50 pounds" - won't work. Install a threaded insert in the plastic and put 1/4-20 threads on the rods and you're set.

"I have a bracket folded out of .060" stainless sheet. It has a flat base about 2" square - I want to glue this to a 1/4" polycarbonate panel. The bracket will see 5 pounds in a bending moment at 2" above the adhesive" - this can be easily solved.

I've specified applications for this sort of thing on solar energy (photovoltaic) and biotech consumable products, and there are many drivers governing the adhesive selection.

Answer the following and I can help w/ the adhesive:

  • The size, shape and profile of the stainless steel part

  • The size, shape and profile of the plastic part.

  • Is it PVC, Polycarbonate, or something else?

  • Does it have to be PVC or polycarbonate?

  • Operating temperature and min/max temp range.

  • How frequently and how quickly will it be thermally cycled?

  • Accurately describe the physical loads - this it probably the most critical factor. Tension, compression, flex, peel, shear, bending.

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