Flame retardancy, thermal and mechanical properties of sulfonate-containing polyhedral oligomeric silsesquioxane (S-POSS)/polycarbonate composites
Flame retardancy, thermal and mechanical properties of sulfonate-containing polyhedral oligomeric silsesquioxane (S-POSS)/polycarbonate composites
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DOI：
10.1016/j.polymdegradstab.2015.03.023
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发表时间：
2015-06-01
影响因子：
5.9
通讯作者：
Yang, Rongjie
中科院分区：
文献类型：
--
作者：
Li, Ziqian;Yang, Rongjie
In this work, polycarbonate (PC) composites were prepared by incorporation of sulfonate-containing polyhedral oligomeric silsesquioxane (S-POSS) via direct melt blending. The S-POSS was synthesized using sulfonation of octaphenylsilsesquioxane by chlorosulfonic acid and potassium carbonate, and characterized by FTIR and H-1 NMR spectroscopy. The thermal and mechanical properties of composites with different S-POSS loadings were investigated by DSC, TGA and tensile tests. Micron-sized aggregates were observed in the PC composites by SEM. The present of S-POSS led to decrease the glass-transition and the initial thermal degradation temperatures of composites. The flame retardancy performance of composites was studied by LOI and UL-94 burning test. The composite had an LOI value of 33.3 and a UL-94 rating V-0 (3.2 and 1.6 mm) with the content of S-POSS was 0.25 wt.%. (C) 2015 Elsevier Ltd. All rights reserved.
