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Polymers
Volume 12
Issue 2
10.3390/polym12020326
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Article

Matt Polyurethane Coating: Correlation of Surface Roughness on Measurement Length and Gloss

by
Qiwen Yong
1,2,*,
Jinming Chang
1,2,
Qi Liu
1,2,
Feng Jiang
1,2,
Daidong Wei
3,* and
Haijun Li
4
1
Institute of Applied Chemistry, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China
2
Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China
3
Guangzhou Chemical Grouting Co., Ltd., Chinese Academy of Sciences, Guangzhou 510650, China
4
Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Sichuan University of Science & Engineering, Zigong 643000, China
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(2), 326; https://doi.org/10.3390/polym12020326
Submission received: 18 December 2019 / Revised: 22 January 2020 / Accepted: 24 January 2020 / Published: 4 February 2020
(This article belongs to the Special Issue Polymer Microscopy)
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Abstract

Matt polyurethane coating was successfully prepared through the synergistic effect of castor oil and phenolic epoxy resin into polyurethane backbone. The formation mechanism may be ascribed to the modulus mismatch between the partially modified epoxy polyurethane and partially unmodified polyurethane. Scanning electron microscopy (SEM) was used to observe the micro-rough surface morphologies. Atomic force microscopy (AFM) and three-dimensional (3D) surface profilometer were applied to calculate a series of surface roughness parameters in different dimensions, such as Sa, Sq, Sp, Sv, Sz, Sku, Ssk, etc. The exciting results of this paper—the correlation of surface roughness on measurement length and gloss—are explored in detail. It reveals the extrinsic property of measured roughness with measurement length and provides guidance for what kind of incident angle gloss meters (20°, 60°, and 85°) best describe the gloss of matt polyurethane coating.
Keywords: matt polyurethane; AFM; roughness parameter; gloss; surface profilometer matt polyurethane; AFM; roughness parameter; gloss; surface profilometer

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MDPI and ACS Style

Yong, Q.; Chang, J.; Liu, Q.; Jiang, F.; Wei, D.; Li, H. Matt Polyurethane Coating: Correlation of Surface Roughness on Measurement Length and Gloss. Polymers 2020, 12, 326. https://doi.org/10.3390/polym12020326

AMA Style

Yong Q, Chang J, Liu Q, Jiang F, Wei D, Li H. Matt Polyurethane Coating: Correlation of Surface Roughness on Measurement Length and Gloss. Polymers. 2020; 12(2):326. https://doi.org/10.3390/polym12020326

Chicago/Turabian Style

Yong, Qiwen, Jinming Chang, Qi Liu, Feng Jiang, Daidong Wei, and Haijun Li. 2020. "Matt Polyurethane Coating: Correlation of Surface Roughness on Measurement Length and Gloss" Polymers 12, no. 2: 326. https://doi.org/10.3390/polym12020326

APA Style

Yong, Q., Chang, J., Liu, Q., Jiang, F., Wei, D., & Li, H. (2020). Matt Polyurethane Coating: Correlation of Surface Roughness on Measurement Length and Gloss. Polymers, 12(2), 326. https://doi.org/10.3390/polym12020326

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