finishing.com -- The Home Page of the Finishing Industry

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics

60,000 Q&A topics -- Education, Aloha, & Fun

topic 6067

How to prep and bond Invar to epoxy panels


A discussion started in 2000 and continuing through 2020
Adding your Q. / A. or Comment will restore it to the Current Topics page

2000

Q. I need to bond an Invar plate to carbon reinforced epoxy blocks.This is for a thermally stable platform I'm building for a telescope. Can anyone tell me the proper surface prep for the Invar plate to maximize adhesion using room temperature epoxy adhesive? If chemical treatment is the best method, I would appreciate a description of the procedures, chemicals, and pitfalls.

Thanks,

Chris Dumlao
engineer/hobbyist - Pleasanton, California, USA


2004

Q. Were there responses to this request for information regarding surface preparation procedures for Invar prior to bonding with epoxy?

Todd Mower
- Lexington, Massachusetts USA


November 13, 2010

A. WE ARE INFORMED THAT ITW PLEXUS ADHESIVE MA420 AND THEIR PRIMER PC120 ARE FOR BONDING INVAR TO CARBON FIBER COMPOSITES.

KANNAN VENKATACHALAM
OPTICS ASSEMBLY MANUFACTURER - Pondicherry India



sidebar 2002

Q. I recently found a product called "Caucciu" in Italy, that translates as "Invar Rubber" and on doing a web search I found you and I am hoping that you may be able to direct me as to what sort of manufacturer/company I should be looking at to obtain this product. I live in Sydney, Australia. Any help you can give would be most appreciated.

Regards,

Peter Kissner
- Sydney, NSW, Australia


February 2014

A. Hi Peter. I don't think "Caucciu" has anything at all to to do with the metal "Invar" :-)
I believe the word just means "natural rubber", but that what happened is that in Italian it is an 'invariable' noun (same in plural form, as in the singular) noun ... and that someone may have just seen the abbreviation "INVAR" when they looked it up in the dictionary. Good luck.

Regards,

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E.
finishing.com - Pine Beach, New Jersey
Striving to live Aloha



Etching Super Invar 32-5 for Bonding

2006

Q. Does anyone have suggestions on an etchant solution for super Invar 32-5? If so, please include solution composition, immersion time, and temperature of the solution.

Greg Wasielewski
Aerospace - Palo Alto, California, USA


2006

adv.
Our Company has developed etching, polishing of Hastelloy C, Invar, Kovar, etc. If you need help, let us know.

anna_berkovich
Anna Berkovich
Russamer Lab
supporting advertiser 
Pittsburgh, Pennsylvania 
russamer labs banner


Prep before BR-127 Primer on Invar

July 2, 2020

Q. We recently received 2 RFQs from different companies to apply BR-127 over Invar.
One vendor wants us to clean the parts in an alkaline cleaner and apply the BR-127 afterwards.
The other vendor, wants us to use the FPL etch and then apply the BR-127.
We are used to applying BR-127 over aluminum and other substrates, however, I believe that the proper procedure should be grit blast at low pressure with aluminum oxide media, followed by sol-gel treatment and then BR-127.

I would like to hear from the forum their opinion

Martiroz Avoyan
- Los Angeles, California - USA


July 2020

A. Hi Martiroz. I guess there are many sol-gels but a lot of them are used as parting agents, so I would be surprised if they are appropriate to use before a primer. Grit blasting sounds appropriate, but I don't know which if any etch would be appropriate. Hopefully a reader has experience with it.

Luck & Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
finishing.com - Pine Beach, New Jersey
Aloha -- an idea worth spreading

adv.   accurate anodizing banner   

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental Compliance


©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.