Curated with aloha by
Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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Self-curing cast polyurethane?
Q. Hi.
We get some rollers/components cast in POLY URETHANE having hardness 90 shore A.
My vendor uses ADIPRENE LF 900 A from CHEMETURA.
This material requires curing(baking) after pouring.
I am interested to know if there is a process/material available where PU self hardens upon ageing and does not need to be heat treated/cured/baked without compromising hardness and other properties (similar to ADIPRENE LF 900A)
Dont mind the cost involved but some how I want to avoid baking.
Thanks in advance
Vikram Dogra
Irusha India - Chandigarh, India
February 24, 2018
A. There are two part solvent free polyurethane resins that cure at room temperature. You can find them on the internet.
Tom Rochester
CTO - Jackson, Michigan, USA
Plating Systems & Technologies, Inc.
February 27, 2018
March 1, 2018
Q. Thanks for the reply TOM.
My main concern is hardness. Do these products you mentioned, achieve SHORE A 95 without baking ?
Vikram Dogra
Irusha India - Chandigarh, India
A. Hi Vikram. If you don't find radiation curing (UV & EB Curing) prohibitive, maybe it's possible. I don't know too much about it except that it's used for really hard coatings, like on plastic automotive headlights. Give a look at radtech.org
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
March 2018
A. Shore A of 95 is achievable.
Tom Rochester
CTO - Jackson, Michigan, USA
Plating Systems & Technologies, Inc.
March 1, 2018
May 1, 2018
Q. Unable to locate any, Tom. Any help or a company's name is appreciated.
REGARDS,
Vikram Dogra
Irusha India - Chandigarh, India