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A methacryl polyhedral oligomeric silsesquioxane (POSS)-reinforced methylsilicone resin was prepared in this work. The structures of the obtained products were confirmed with Fourier transform infrared and atomic force microscopy. The influence of methacryl-POSS on the thermal behavior of the methylsilicone resin was studied by thermogravimetric analysis and isothermal thermogravimetric analysis. The results showed that the thermal stability of the methylsilicone resin was improved, and the degree of thermooxidative degradation was lowered; this was due to the retardation of polymer chain motion and the formation of a protective layer of SiO 2 .The interlaminar shear strength and flexural strength of quartz fiber/methylsilicone resin composites were tested to determine the effects of methacryl-POSS on the mechanical properties of methylsilicone resin. The results revealed that the mechanical properties of the methylsilicone composites also increased obviously after the incorporation of methacryl-POSS because of the increase in the cure degree and rigidity of the resin.

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Predicting extreme rainfall over eastern Asia by using complex networks * He Su-Hong(何苏红) a) , Feng Tai-Chen(封泰晨) b) , Gong Yan-Chun(龚艳春) a) , Huang Yan-Hua(黄雁华) a) , Wu Cheng-Guo(吴成国) a) , and Gong Zhi-Qiang(龚志强) c)d) † a