Amine Blush

Amine Blush. Amine blush appears as a waxy layer on any substrate surface As such it can be a problematic occurrence that interferes with corrosion prevention methods It prevents the adequate adhesion of a protective coating to a metallic surface that is prone to corrosion Amine blush is watersoluble therefore it is easily removed with warm water.

Amine blush is a chemical reaction that occurs between water carbon dioxide and the amine component of epoxy coatings Amines are hygroscopic which means that they tend to absorb moisture from the air and are prone to react with available moisture and carbon dioxide When some epoxies are applied under low temperature and/or high humidity conditions a side.

Elcometer 139 Amine Blush Swab Test Kit

Elcometer amine blush test When using amine cured epoxy resin coatings in a multilayer system if the original coating cures in a low ambient temperature and/or in a high humidity environment problems referred to in the industry as amine blush can develop The presence of amine blush can lead to intercoat adhesion failures if the film is recoated.

What is Amine Blush Testing? Definition from …

Amine blush is alkaline so an elevated pH reading may indicate the presence of an amine exudate A limitation to pH testing is that other factors like surface contamination may trigger a high pH but is not due to the presence of an amine blush In addition to pH testing a field test kit can be used to detect the presence of carbamates on the coating surface.

What is Amine Blush and Amine Bloom in Epoxy Art Resins?

PDF fileCauses of AmineBlush Blushing is caused by sorption of moisture and carbon dioxide from the atmosphere during curing Although the conditions that can cause blushing as well as the chemistry involved have been known and reported for some time [16] no systematic description of strategies for Page 1 developing blushresistant epoxy formulations appears to have been.