| 王荣华,王小燕,李 晖,刘亚平,王新波,李倩倩,孙 岩.白炭黑补强氟硅橡胶热空气老化机理研究[J].装备环境工程,2015,12(2):10-14,38. WANG Rong-hua,WANG Xiao-yan,LI Hui,LIU Ya-ping,WANG Xin-bo,LI Qian-qian,SUN Yan.Study on the Hot Air Aging Mechanism of Silica Reinforced Fluorosilicone Rubber[J].Equipment Environmental Engineering,2015,12(2):10-14,38. |
| Objective To study the hot air aging mechanism of silica reinforced fluorosilicone rubber. Methods Hot air aging experiments of silica reinforced fluorosilicone rubber were conducted at different accelerated aging temperature, and the mechanical properties of the material during the aging process were studied. Meanwhile, thermal analysis, ATR-FTIR, XPS, and crosslink density tester were used to investigate the microstructure changes of fluorosilicone rubber during the 200℃ hot air aging process. Results The tensile strength and elongation retention rate at break changed slightly in low-temperature environment, while the changing trend increased in high-temperature environment. The Shore A hardness did not show significant changes during the whole aging process. Conclusion The possible aging mechanism of fluorosilicone rubber could be crosslink destruction, trifluoropropyl decomposition in side chain and partial fracture in main chain. |
