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-----MEK and paint cure testing
August 30, 2008
I need to know how many times must I put
methyl ethyl ketone ⇦ on
eBay or
Amazon [affil link]
on the painted parts for the cure test?
I have a paint line with 5 stages, actually my set point is 400
°F in the cure oven during 15 minutes, the thickes's part is 1.6-2.0, azko nobel is my powder supplier
Engineer - Nogales, Sonora, Mexico
As it appears this is not a customer requirement but a possible in-house test method, therefore, you can determine the number of rubs yourself. First, sort out an item already powder coated that you feel is acceptable for cure by yourself and your clients. Using a Q-tips ⇦ on eBay or Amazon [affil link] damped/wet in MEK and rub 10 times (back and forth) - stop - scratch with finger nail. If OK, next time rub 20 times. Continue until film becomes damaged. Take this number of rubs, less 10 as your standard test. Re-evaluate, if OK here is your standard.
Terry HicklingBirmingham, United Kingdom
September 8, 2008
I perform the test is the following way. Twelve ply cheese cloth, (medical gauze) fitted on the end of a 3/4 inch rod that is part of a jig imparting a weight of 1.5 kilograms. For a thermoset coating, 200 double rubs is full cure, 100 rubs is a good enough cure for most coatings, and 50 rubs you can get away with.
Ron ZeemanCoil Coating - Brampton, ON, Canada
September 12, 2008
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