Thermal aging on mechanical properties and crosslinked network of natural rubber/zinc Dimethacrylate composites |
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| Authors: | Chuanhui Xu Yukun Chen Jing Huang Xingrong Zeng Jianping Ding |
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| Affiliation: | 1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | This article dealt with the relationship between mechanical properties and crosslinked networks of natural rubber (NR) reinforced by zinc dimethacrylate (ZDMA) after thermal aging. After thermal aging at the present experimental conditions, the covalent crosslink density showed a decrease all the time, whereas the ionic crosslink density was stable at 80°C but decreased at a higher temperature. The decrease in the total crosslink density after aging indicates the degradation of the crosslinked network. However, an experimental phenomenon observed was that the tensile strength and tear strength increased in a certain degree after aging at 80°C or at a 100°C for a short time. In addition, the thermal stability of the NR/ZDMA composite was evaluated by thermal gravimetric analysis. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | mechanical properties crosslinking aging rubber |
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