期刊
COMPOSITES COMMUNICATIONS
卷 35, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2022.101273
关键词
Fluorosilicone composite; Thermodynamically and kinetically regulation; Interface compatibility
资金
- National Natural Science Foundation of China [51973067]
- Key Projects of Basic Research and Applied Basic Research in Colleges and Universities in Guangdong Province [2018KZDXM004]
- Special project for innovation of high -end scientific research institutions in Zhongshan City [2019AG013]
This study provides a pathway to optimize the mechanical properties of immiscible polymer composites through the thermodynamic and kinetic regulation of nano-SiO2.
This study provides a pathway to optimize the mechanical properties of immiscible polymer composites through the thermodynamic and kinetic regulation of nano-SiO2. The nano-SiO2 premixed in silicone rubber (SR) preferentially thermodynamic migrated to the fluororubber (FKM)/SR interface and FKM phase, thereby assisting the chain entanglements at the interface and thus improving the interfacial compatibility. The surface modification of nano-SiO2 by silane coupling agents is envisioned to effectively facilitate rubber reinforcement, however, it would in turn weaken the thermodynamic driving force for their thermodynamic migration. As such, we reveal a fluorosilicone composite construction strategy (one-step method), in which the thermodynamic migration and surface modification of nano-SiO2 occur simultaneously. OS-P2F4S4-5%@K5% fabricated by one-step method has achieved the highest tensile strength of 7.6 MPa accompanied with the uncompromised stretchability (165%), which was higher than that of TS-P2F4S4-5%@K2% (5.9 MPa, 150%) and P2F4S4-0% (3.5 MPa, 113%).
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