Builders' Forum Archives
Posted by Camper on Mar 2, 2007
Minor adjustment to the science: amine blush is reacted amines, rather than unreacted amines.
From oneoceankayaks site (one of many that give this chemistry):
"The greasy films that appears on some epoxies are largely the salts of amine carbonate. Depending on the type and formulation of the epoxy, amine compounds on the surface combine to various degrees with CO2 (carbon dioxide) and water in humid air forming hydrates of amine carbonate So, I assume they are forming constantly, rather than just after the goo becomes impermeable.
This could mean that it starts forming immediately, not just after the goo has become impermeable.
In Response to: Re: epoxy by Laszlo on Mar 2, 2007