November 2022
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2 Citations
Progress in Organic Coatings
Choosing better organic solvents and providing appropriate mixing ratios for nitrocellulose (NC) lacquer thinner is a very important topic in NC lacquer thinner industries. This paper studied the effects of cosolvents and non-solvents on ester true solvents in NC lacquer thinner. The research objects were ester true solvents (Methyl Acetate (MA) and Ethyl Acetate (EA)), alcohol cosolvents (Ethyl Alcohol (ETA), Isopropyl Alcohol (IPA), and Isobutyl Alcohol (IBA)) and non-solvents (n-Hexane (NX), n-Heptane (NP), and Petroleum Ether (PE)). Nitrocellulose lacquer dissolution experiments, explosion characteristic experiments, and algal growth inhibition experiments were performed. The results indicated that: the mixed organic solvents containing cosolvent of ETA were better than those containing the other two cosolvents (IPA and IBA) in terms of dissolution rates, explosion characteristics, and environmental influences. For non-solvent, NX was a better non-solvent as the dissolution rates of mixed organic solvents (containing MA, ETA, and NX) all kept at relatively higher levels at different non-solvent proportions. NX and PE were safer non-solvents when the concentration of non-solvent was relatively lower (16.7 %). The IC50 values of mixed organic solvents containing non-solvent NT on Dunaliella bardawil were a little bit higher than those of mixed organic solvents containing NX or PE when the volume ratios of non-solvent were the same. In conclusion, the mixed organic solvent of MA (ester true solvent), ETA (alcohol cosolvent), and NX (non-solvent) with a volume ratio of about 4:1:1 was a relatively ideal composition for the industrial application of NC lacquer thinner.