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Advances in Materials Science and Engineering
Volume 2018 (2018), Article ID 9624701, 9 pages
https://doi.org/10.1155/2018/9624701
Research Article

Microstructure and Damping Property of Polyurethane Composites Hybridized with Ultraviolet Absorbents

1Institute of Materials Processing and Intelligent Manufacturing, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
2College of Light Industry and Textile Engineering, Qiqihar University, Qiqihar 161006, China

Correspondence should be addressed to Bing Tian

Received 7 September 2017; Revised 30 November 2017; Accepted 6 December 2017; Published 10 January 2018

Academic Editor: Marino Lavorgna

Copyright © 2018 Jiang Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This article investigated the microstructure and damping property of TPU composites with different contents of ultraviolet absorbents. It can be found that the ultraviolet absorbents formed fiber-shaped precipitations in the TPU matrix. The UV-328 was randomly distributed in the matrix and exhibited a weak interfacial bonding with the matrix. In comparison, the UV-329 was well embedded in the matrix and formed a relatively better interfacial bonding and compatibility with the TPU matrix. The damping factor tanδ of both 328-composites and 329-composites had been reduced gradually with increasing content of ultraviolet absorbents at the glass transition temperature range due to the fact that the ultraviolet absorbents were in the crystalline state which decreased the volume content of the viscoelastic TPU matrix. But the tanδ increased at the temperature range of higher than the glass transition temperature, which should be related to the dominance of interfacial frictions between the ultraviolet absorbents and the matrix on the energy absorption.