Effects of Water and Alcohols Impurities in Polyaspartic Flooring Formulation
The influence of water and minor molecular alcohols on the reaction rate is remarkable.
A Solvent water content and purity
B Powder water content
C Dilute solvents for additives such as leveling and defoaming agents.
Like all isocyanates, NCO reacts with water. Therefore, a solvent with water content below 500ppm (preferably below 300ppm) is necessary, called "polyurethane grade solvent."
We also recommend carefully checking impurities in the solvent that may react with the NCO group, such as butanol and acetic acid in ethyl ester.
R-NCO + H2O → Slow R-NHCOOH → Quick R-NH2 + CO2
R-NH2 + R-NCO → Quick R-NHCONH-R
R-NCO +R, R,,NH → R-NHCON- R, R,,
The influence of polyaspartic resin on environmental humidity is smaller than polyurethane. The humidity is more significant, and the touch drying speed is accelerated, but the operation time is unaffected. It is not easy to blister.
As with other materials, the higher the temperature, the faster the reaction, but it's not such a noticeable impact of epoxy; the weakness is not easy to adjust.
Temperature vs. pot life
Contact Person: Annie Qing
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