Interaction Between Fumed-Silica and Epoxidized Natural Rubber |
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Authors: | Yong Yue Luo Yue Qiong Wang Jie Ping Zhong Can Zhong He Yong Zhen Li Zheng Peng |
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Affiliation: | (1) Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, 524001, People’s Republic of China;(2) Guangdong Ocean University, Zhanjiang, 524088, People’s Republic of China;(3) Hainan University, Haikou, 570228, People’s Republic of China; |
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Abstract: | Epoxidized natural rubber (ENR)/fumed silica vulcanizates were prepared by mechanical mixing method. Fumed silica content
can affect mechanical properties of the composites, and ten parts per hundreds of rubber (phr) fumed silica lead to the best
tensile strength. The interaction between ENR and fumed silica was characterized by Kraus equation, crosslink density (tested
by NMR), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA)
and scanning electron microscope (SEM). The results showed that the dispersion of silica in ENR was better than in natural
rubber (NR), hydrogen bond was produced between ENR and fumed-silica in ENR/silica blends, and glass transition temperature
of ENR/silica vulcanizate was higher than pure ENR vulcanizate. TGA and DMA confirmed that there was intense interaction between
ENR and silica. |
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