Preparation and Flame Retardancy of Polyurethane/POSS Nanocomposites |
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| Authors: | Meng Xue Xian Zhang Zhao-feng Wu Huan Wang Xin Ding Xing-you Tian |
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| Affiliation: | 1.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China2.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;Anhui Hualing Cable Group Company Limited, Wuwei 238371, China |
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| Abstract: | Polyurethane/polyhedral oligomeric sisesquioxane (PU/POSS) nanocomposites were syn-thesized via polymerization utilizing the compatibility between POSS nanoparticles and 4,4'-diphenyl methylene diisocyanate. Scanning electron microscope images and Fouriertransform infrared spectra revealed that POSS nanoparticles were dispersed in PU matrix.Thermal gravimetric analysis was employed to investigate the thermal decomposition be-havior of PU/POSS nanocomposites at elevated temperatures. Then fire performance wasevaluated by limiting oxygen index, underwriters laboratories 94 testing and char residue morphology. These results showed that the addition of POSS promoted the formation of char residues which were covered on the surface of polymer composites, leading to the im-provement of thermal stability and flame retardancy. |
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| Keywords: | Polyurethane Polyhedral oligomeric sisesquioxane Flame retardant Nanocomposite Polymerization |
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