Polishing UHMW?
Polishing UHMW?
(OP)
Hi,
Can anyone recommend a polish/technique to get a very smooth surface on a UHMW? Ideally something easily obtainable and not requiring a particular skill.
The part is a mold and I'm hoping a smoother surface will improve release of shore A 40 silicone parts. Currently the surface has machining and sanding marks in it and it's not releasing even with various mold release agents.
Thanks!
Jon C.
Can anyone recommend a polish/technique to get a very smooth surface on a UHMW? Ideally something easily obtainable and not requiring a particular skill.
The part is a mold and I'm hoping a smoother surface will improve release of shore A 40 silicone parts. Currently the surface has machining and sanding marks in it and it's not releasing even with various mold release agents.
Thanks!
Jon C.





RE: Polishing UHMW?
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
http://eng-tips.com/market.cfm
for site rules
RE: Polishing UHMW?
Thanks.
RE: Polishing UHMW?
Intentional oxidation of the PE surface is well known as it improves adhesion. Flame or plasma treatment for example. The surface "heals" itself over 1-2 weeks as the oxidized groups move within the bulk and away from the surface. This is well documented for example in some very thorough papers by Sutherland.
Chris DeArmitt - PhD FRSC CChem
Plastic & Additives Webinars
Instant Downloads & Inexpensive
www.plastictraining.com