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Thermal stability of styrene butadiene rubber (SBR) composites filled with kaolinite/silica hybrid filler |
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| Authors: | Yude Zhang Qian Zhang Qinfu Liu Hongfei Cheng Ray L Frost |
| Institution: | 1. Cultivating Base for Key Laboratory of Environment-Friendly Inorganic Materials in University of Henan Province, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China 2. School of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing, 100083, People’s Republic of China 3. Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, QLD, 4001, Australia |
| Abstract: | Styrene butadiene rubber (SBR) composites filled with fillers, such as modified kaolinite (MK), precipitated silica (PS), and the hybrid fillers containing MK and PS, were prepared by melt blending. The kaolinite sheets were finely dispersed in the SBR matrix around 20–80 nm in thickness and reached the nano-scale. The SBR composites with fillers exhibited excellent thermal stability compared to the pure SBR. The thermal stability of SBR composites was improved with the increasing of MK mass fraction. When MK hybridized with PS, kaolinite sheets were covered by the fine silica particles and the interface between filler particles and rubber matrix became more indistinct. SBR composite filled by hybrid fillers containing 40 phr MK and 10 phr PS became more difficult in decomposition and was better than that of 50 phr PS/SBR and 50 phr MK/SBR in thermal stability. Therefore, the hybridization of the fine silica particles with the kaolinite particles can effectively improve the thermal stability of SBR composites. |
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