Abstract
ABSTRACTOctakis(ethynyldimethylsiloxy)silsesquioxane (OEMS) was first synthesized via hydrolysis condensation reaction between tetramethylammonium octaanion and ethynyldimethylchlorosilane, and characterized by FT‐IR, NMR, and GPC methods. A series of OEMS modified poly(silicane arylacetylene) resins (OEMS‐PSAs) were prepared from OEMS and poly(silicane arylacetylene) (PSA). TEM analysis of the OEMS‐PSAs confirms that the nano‐sized polyhedral oligomeric silsesquioxanes (POSS) are dispersed evenly in low content, but aggregated unregularly in high content in OEMS‐PSAs. The curing behavior of OEMS‐PSAs was studied with DSC and FT‐IR techniques. Nanoindentation test shows the incorporation of OEMS into PSA could decrease both of the elastic modulus and surface hardness of the PSA thermoset. The dielectric constants (ɛr) of the OEMS‐PSA thermosets approach to 2.1, depending on not only the content of POSS but also the dispersion of POSS. Furthermore, TGA results demonstrate the OEMS‐PSA thermosets possess the certain thermo‐oxidative resistance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44158.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
