Haiyang Ding1,2,3,4,5, Xiaohua Yang1,2,3,4,5, Lina Xu1,2,3,4,5, Shouhai Li1,2,3,4,5, Jianling Xia1,2,3,4,5, Mei Li1,2,3,4,5,*
Journal of Renewable Materials, Vol.8, No.1, pp. 1-11, 2020, DOI:10.32604/jrm.2020.08165
Abstract Thermosetting polyurethanes are widely used in various fields owing to
their excellent elasticity, strength and solvent resistance. Three environmental
friendly propyl gallate-based self-healing polyurethanes were prepared from polyurethane prepolymers with varying isocyanate content. The thermal stabilities of the
polyurethanes were tested using thermogravimetric analysis. Their self-healing and
mechanical properties were analyzed using a universal testing machine and dynamic
thermomechanical analysis. The polyurethanes were found with high self-healing
ability and excellent mechanical properties due to the absence of phenolic carbamate.
These qualities improved with increased isocyanate content and the prolonged selfhealing time. We found, therefore, that More >
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