Octakis(ethynyldimethylsiloxy) silsesquioxane: Synthesis and application in poly(silicane arylacetylene) resin
作者： Xiaojun Bu , Yan Zhou , Chuan Li , Farong Huang
DOI: 10.1002/APP.44158
关键词: Polymer chemistry 、 Nanoparticle 、 Condensation reaction 、 Materials science 、 Silsesquioxane 、 Elastic modulus 、 Thermosetting polymer 、 Tetramethylammonium 、 Curing (chemistry) 、 Nanoindentation
摘要: Octakis(ethynyldimethylsiloxy)silsesquioxane (OEMS) was first synthesized via hydrolysis condensation reaction between tetramethylammonium octaanion and ethynyldimethylchlorosilane, characterized by FT-IR, NMR, GPC methods. A series of OEMS modified poly(silicane arylacetylene) resins (OEMS-PSAs) were prepared from (PSA). TEM analysis the OEMS-PSAs confirms that nano-sized polyhedral oligomeric silsesquioxanes (POSS) are dispersed evenly in low content, but aggregated unregularly high content OEMS-PSAs. The curing behavior studied with DSC FT-IR techniques. Nanoindentation test shows incorporation into PSA could decrease both elastic modulus surface hardness thermoset. dielectric constants (ɛr) OEMS-PSA thermosets approach to 2.1, depending on not only POSS also dispersion POSS. Furthermore, TGA results demonstrate possess certain thermo-oxidative resistance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44158.
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