苯并三唑衍生物杂化聚氨酯基复合材料的微观形貌及力学性能探究

doi:10.11896/cldb.201906031

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Abstract This paper presented the study on the micro-morphology and mechanical properties of benzotriazole small molecule UV-329 hybridized polyether polyurethane (TPU) composites. TPU/UV-329 composites with various proportion (10%, 20%, 25%, 30%, 40%, 50%, 60%, mass fraction) of UV-329 were prepared. Scanning electron microscope (SEM) and Fourier transform infrared spectroscope (FTIR) were employed to characterize the micro-morphology and structure of TPU/UV-329 composites, and their mechanical properties of the composites were tested by universal material testing machine. As could be seen from the results, there was no obvious phase separation in the microstructure of composites with low UV-329 contents by micro-morphology observation, while phase separation occurred in the microstructure of composites with high UV-329 contents. Additionally, the reduction of polyurethane proportion induced the gradual migration of a large number of UV-329 molecular monomers to the surface layer of the cross section, which indicated the miscible state of most UV-329 molecular monomers in the matrix, damaging the continuity of the matrix. As regard to the mechanical properties, the tensile test of the composite demonstrated the accordance of the tensile properties to Payne effect, namely, UV-329 was capable of improving the elastic modulus and strength of the composites at low strain, and enhancing the plastic behavior of the composites at high strain.

Key words： benzotriazole small molecule UV-329 matrix TPU microscopic morphology tensile property

Published: 03 April 2019

CLC number:

TB332

Fund:This work was financially supported by the Natural Science Foundation of Heilongjiang Province (E201251).

About author:: Jiang Chang,College of Material Science and Chemical Engineering of Harbin Engineering University, doctoral student , Qiqihar University, School of Light Industry and Textile, Department of Light Chemical Engineering (Dyeing and Finishing Engineering ), lecturer.

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Cite this article:

CHANG Jiang. Exploring the Morphology and Mechanical Properties of Benzotriazole Derivatives Hybridized Polyurethane Composites[J]. Materials Reports, 2019, 33(6): 1074-1078.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.201906031 OR http://www.mater-rep.com/EN/Y2019/V33/I6/1074

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