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topic 60705

Self-curing cast polyurethane?


February 24, 2018

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
Vikram Dogra
Irusha India - Chandigarh, India


February 27, 2018

A. There are two part solvent free polyurethane resins that cure at room temperature. You can find them on the internet.

tom_rochester
Tom Rochester
Plating Systems & Technologies, Inc.  
supporting advertiser
Jackson, Michigan, USA
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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
vikram dogra Vikram Dogra
Irusha India - Chandigarh, India


March 2018

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,

pic of Ted Mooney
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey
Striving to live "Aloha"


March 1, 2018

A. Shore A of 95 is achievable.

tom_rochester
Tom Rochester
Plating Systems & Technologies, Inc.  
Jackson, Michigan, USA



May 1, 2018

Q. Unable to locate any, Tom. Any help or a company's name is appreciated.
REGARDS,

vikram dogra Vikram Dogra
Irusha India - Chandigarh, India



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