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Preparation and Performance Optimization of Two-Component Waterborne Polyurethane Locomotive Coating

Liu, Haonan and Bi, Zhijie and Wan, Zhong and Wang, Xianming and Wan, Yong and Guo, Xiangxin and Cai, Zhongyu (2019) Preparation and Performance Optimization of Two-Component Waterborne Polyurethane Locomotive Coating. Coatings, 10 (1). p. 4. ISSN 2079-6412

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This paper reports the effects of different formulas on the performance of waterborne polyurethane (WPU), including two-component WPU and curing agent, wetting dispersant, defoaming agent, and wetting agent. The optimization of rheological additives selection, through the optimization of coating physical properties and chemical properties, can make the film show uniform color and appearance without pinholes, bubbles, or wrinkles, and have a long probation period. Through the analysis of performance after a 1000-h quick ultraviolet (QUV) aging test, the light reduction rate is 23.19%, and the color difference is 1.9. As can be seen from the scanning electron microscope (SEM) image and the three-dimensional stereomicroscope, the film shows relatively uniform dispersion, good compactness, and smooth surface. The two-component WPU topcoat is found to have high gloss 87.1 (60°) and high weather resistance, which provides a positive indication for the modulation and production of waterborne locomotive paint.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Liu, Haonan
Bi, Zhijie
Wan, Zhong
Wang, Xianming
Wan, Yong
Guo, Xiangxin
Cai, Zhongyuzhc35@pitt.eduzhc35
Date: 18 December 2019
Date Type: Publication
Journal or Publication Title: Coatings
Volume: 10
Number: 1
Publisher: MDPI AG
Page Range: p. 4
DOI or Unique Handle: 10.3390/coatings10010004
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
Uncontrolled Keywords: two-component; waterborne polyurethane paint; locomotive topcoat
ISSN: 2079-6412
Official URL:
Funders: National Natural Science Foundation of China, Natural Science Foundation of Shandong Province, Taishan Scholars Program of Shandong Province, China.
Article Type: Research Article
Date Deposited: 13 Jul 2021 20:20
Last Modified: 13 Jul 2021 20:20


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