3 years ago

Effect of trisilanolphenyl-POSS on rheological, mechanical, and flame-retardant properties of poly(ethylene terephthalate)/cyclotriphosphazene systems

Effect of trisilanolphenyl-POSS on rheological, mechanical, and flame-retardant properties of poly(ethylene terephthalate)/cyclotriphosphazene systems
Hong Xu, Xiandong Zeng, Zhiping Mao, Lingmin Yi, Xiaojie Yan, Jiawei Li
Poly(ethylene terephthalate) (PET) chips were coated by trisilanolphenyl–polyhedral oligomeric silsesquioxane (T-POSS) and hexakis (para-allyloxyphenoxy) cyclotriphosphazene (PACP) using the predispersed solution method, and PET/PACP/T-POSS hybrids were further prepared by the melt-blending method. The influence of T-POSS on the rheological, thermal, and mechanical properties and flame retardancy of PET/PACP composites were discussed. The results suggest that T-POSS was homogeneously dispersed in the PET matrix, which reduced the negative effects on polymer rheology and mechanical properties. For the PET/4%PACP/1%T-POSS sample, the tensile strength at break and Tg increased from 29.67 MPa and 81.7 °C (PET/5%PACP) to 34.8 MPa and 85.8 °C, respectively, but the sample also self-extinguished within 2 s, and the heat release capacity was reduced by 27.9% in comparison with that of neat PET.© 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 45912.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45912

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