Yong Qiwen, Chang Jinming, Liu Qi, Jiang Feng, Wei Daidong, Li Haijun
Institute of Applied Chemistry, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China.
Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, China.
Polymers (Basel). 2020 Feb 4;12(2):326. doi: 10.3390/polym12020326.
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 , , , , , , , 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.
通过蓖麻油和酚醛环氧树脂在聚氨酯主链中的协同作用，成功制备了哑光聚氨酯涂层。其形成机理可能归因于部分改性环氧聚氨酯和部分未改性聚氨酯之间的模量不匹配。采用扫描电子显微镜（SEM）观察微观粗糙表面形态。应用原子力显微镜（AFM）和三维（3D）表面轮廓仪计算不同维度的一系列表面粗糙度参数，如 、 、 、 、 、 、 等。本文详细探讨了令人兴奋的结果——测量长度上的表面粗糙度与光泽度之间的相关性。它揭示了测量粗糙度与测量长度的外在特性，并为哪种入射角光泽度仪（20°、60°和85°）最能描述哑光聚氨酯涂层的光泽度提供了指导。
