| Flocculation and Properties of Kaolinite/ESBR Composite by Emulsion Blending Method |
| Received:November 07, 2019 Revised:November 07, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.10.0745 |
| Key Words: kaolinite；ESBR；composite；emulsion blending method；flocculant；mechanical property |
| Author Name | Affiliation | E-mail | | ZHANG Ao | Inner Mongolia University of Technology | zhangao8816@163.com | | KANG Langlang* | Inner Mongolia University of Technology | zymclay1985@163.com | | ZHANG Yinmin* | Inner Mongolia University of Technology | pzqm163@163. com | | DING Daqian | Inner Mongolia University of Technology | | | ZHANG Yongfeng | Inner Mongolia University of Technology | |
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| Abstract: |
| The kaolinite/emulsion polymerized styrene butadiene rubber（ESBR） composites were prepared by emulsion blending method，the effects of flocculant type，flocculant mass fraction and flocculant dripping acceleration on the curing characteristics，Mooney viscosity and mechanical properties of the composites were investigated.The results showed that during the composites flocculating，the repulsive force between the rubber micro-particles neutralized by flocculant Al2（SO4）3 and KAl（SO4）2 was greater，and the rubber particles formed after agglomeration of micro-particle were smaller and more uniform.When the mass fractions of Al2（SO4）3 and KAl（SO4）2 were 0.050 and 0.100 respectively，and the drop accelerations were 3 and 6 mL·min-1 respectively，the crosslinking degree of the composites was higher，the average molecular weight of the effective chain was smaller，and the mechanical properties were better.The lamellar peeling degree of kaolinite in the composites flocculated by Al2（SO4）3 and KAl（SO4）2 was higher，the dispersion was more uniform，and the interface action between kaolinite and rubber matrix was better. |
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