Alternative adhesion test for epoxy paint in a recessed groove
Alternative adhesion test for epoxy paint in a recessed groove
(OP)
Hello,
I'm looking for a verifiable method of testing adhesion of non-metallic epoxy paint in a mill-etched groove (depth = 0.35 mm, width = 1/32") to aluminum (7075). We cannot validate the process due to time constraints, and we cannot use the accepted method of adhesion testing (tape test/peel test) because the paint cannot be properly accessed in such a tight groove. This is for use on surgical instruments to the adhesion of the paint is critical as any chipping/peeling can pose biocompatability hazards. I'm open to all suggestions!
Thanks
I'm looking for a verifiable method of testing adhesion of non-metallic epoxy paint in a mill-etched groove (depth = 0.35 mm, width = 1/32") to aluminum (7075). We cannot validate the process due to time constraints, and we cannot use the accepted method of adhesion testing (tape test/peel test) because the paint cannot be properly accessed in such a tight groove. This is for use on surgical instruments to the adhesion of the paint is critical as any chipping/peeling can pose biocompatability hazards. I'm open to all suggestions!
Thanks





RE: Alternative adhesion test for epoxy paint in a recessed groove
High pressure water spray.
RE: Alternative adhesion test for epoxy paint in a recessed groove
RE: Alternative adhesion test for epoxy paint in a recessed groove
@ czarcbc - considered it & messed around a little in our lab, but with the width of the groove being so narrow, I'm not confident that the test would actually prove adhesion
RE: Alternative adhesion test for epoxy paint in a recessed groove
Don't know if there are any standards since my suggestions were off the top of my head as reasonable sounding things to do.
You might consider making simple flat plate test coupons and do comparative tests of my suggestions against a recognized standard.
RE: Alternative adhesion test for epoxy paint in a recessed groove
Bend
Burnishing
Chisel-knife
Draw
File
Grind-saw
Heat-Quench
Impact
Peel
Push
Scribe-Grid
RE: Alternative adhesion test for epoxy paint in a recessed groove