The production and operation data of three solvent-based coating lines and one waterborne coating line for automobile exterior plastic parts and the related suppliers and their coatings formulations are investigated in detail. The VOCs emissions for the two types of coating process and the total energy consumption (the sum of the production process and the coating process) are compared. The results show that the use of waterborne coatings during the coating process significantly reduces VOCs emission compared to solvent-based coatings. With the use of regenerative thermal oxidizer (RTO), the VOCs emission concentrations of the two types of coating lines can quailed to the current standard. The total energy consumption of the waterborne coatings was approximately 55% more than that of the solvent-based coatings while the application of waterborne coatings reduces significantly the VOCs emission. Therefore, the coating process of the waterborne coatings needs to be streamlined. The improvement of the coating efficiency of the waterborne coatings is also a practical problem that needs to be solved in the future conducive for further development of the waterborne coatings.
HAO Jin-Liang
,
XU Xiao
,
XU Bin
. Analysis of application prospects of waterborne coatings in the field of automotive exterior plastic parts coating from the perspective of VOC release and energy consumption.[J]. Paint & Coatings Industry, 2019
, 49(3)
: 75
-79
.
DOI: 10.12020/j.issn.0253-4312.2019.3.75
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