Synthesis of EP‐POSS mixture and the properties of EP‐POSS/epoxy,SiO2/epoxy,and SiO2/EP‐POSS/epoxy nanocomposite |
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| Authors: | Cunliang Xin Xiaoyan Ma Fang Chen Chunying Song Xiaohong Qu |
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| Affiliation: | Department of Applied Chemistry, The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and the Key Laboratory of Polymer Science and Technology, Shaanxi Province, School of Science, Northwestern Polytechnical University, , Xi' an, 710072 China |
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| Abstract: | The hybrid material of EP‐POSS mixture was synthesized by the hydrolysis and condensation of (γ‐glycidoxypropyl) trimethoxysilane. A series of binary systems of EP‐POSS/epoxy blends, epoxy resin modified by silica nanoparticles (SiO2/epoxy), and ternary system of SiO2/EP‐POSS/epoxy nanocomposite were prepared. The dispersion of SiO2 in the matrices was evidenced by transmission electron micrograph, and the mechanical properties, that is, flexural strength, flexural modulus, and impact strength were examined for EP‐POSS/epoxy blends, SiO2/epoxy, and SiO2/EP‐POSS/epoxy, respectively. The fractured surface of the impact samples was observed by scanning electron micrograph. Thermogravimetry analysis were applied to investigate the different thermal stabilities of the binary system and ternary system by introducing EP‐POSS and SiO2 to epoxy resin. The results showed that the impact strength, flexural strength, and modulus of the SiO2/EP‐POSS/epoxy system increased around by 57.9, 14.1, and 44.0% compared with the pure epoxy resin, Ti, Tmax and the residues of the ternary system were 387°C, 426°C, and 25.2%, increased remarkably by 20°C, 11°C and 101.6% in contrast to the pure epoxy resin, which was also higher than the binary systems. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 810‐819, 2013 |
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| Keywords: | thermal properties composites mechanical properties |
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