Journal
POLYMER
Volume 124, Issue -, Pages 157-167Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2017.07.056
Keywords
Silsesquioxanes; Polyhedral oligomeric silsesquioxane (POSS); Double-decker silsesquioxanes (DDSQ); Epoxy resin; Chemical modification; Curing kinetics; Thermo-mechanical properties
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Funding
- Natural Science Foundation of China [21420102008]
- Chinese State Key Laboratory of Chemical Engineering at Zhejiang University [SKL-ChE-12T08]
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In this paper, we synthesized two types of epoxy group containing POSS derivatives: mono and poly Double-Decker Silsesquioxanes (mono DDSQ and poly DDSQ). The performance of epoxy resin with different DDSQ loading ratios was investigated, including curing kinetics, thermal, mechanical and surface properties. Both mono and poly DDSQ significantly improved thermal and mechanical properties of the epoxy thermosets. The mono DDSQ showed more flexible structure and toughened the epoxy resin better, while the branched poly DDSQ exhibited better thermal resistance. In addition, the DDSQ altered surface of the epoxy resin from hydrophilic to hydrophobic. (C) 2017 Elsevier Ltd. All rights reserved.
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