MEK TEST-Color coated steel
2019年11月1日
About MEK test
There are numerous ways to test paint cure but one of the most traditional is MEK rubs.
MEK is methyl ethyl ketone which is a good solvent for a wide variety of polymers. It is a common ingredient in solvent paints. MEK is a highly volatile and highly flammable liquid. It is a smaller molecule than xylene or mineral spirits and because of this it enters between the molecules of a cured coating.
How to do MEK test?
MEK Test selected region
People select the region on the surface of color coated steel coatings, and clean the residue with clean water. Besides, it marks a rectangle test region, with length 6 inches and wideth 1 inch.
Wiping the coating’s surface
(1). People use the cotton cloth (or other equivalent material) into the leaching liquid of MEK solvent (butanone), then put the index finger into the fold of cloth center. At the same time, people should keep the same hand thumb and other fingers to hold excess fabric, and the index finger must be with the test surface into a 45 degree angle to wipe surface coating test. A back and forth loop is treated as double brush paint, and the speed of the complete should be keep one second again. Do not raise my hand squeeze liquid to wet the cloth with plastic, back and forth until he finished fifty.Of course, you can also like us, choose a professional instrument for MEK testing.The MEK test is more convenient and the result is more accurate. (2) If the metal coating occurs before wiping 50 times, please record it. Choose the adjacent regions as the control object, and then use a dry dishcloth to repeat it.
MEK Test result
(1) The coating does not shall off after wiping the metal surface over 50 times. (2) Make the rating according to the wiping effect. If it occurs the 1- 3 rate, it means below the mark.
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