文献类型：期刊文献

英文题名：The strengthening and toughening effects of a novel octa(propargyl propyl sulfide) POSS (OPPSP) on silicon-containing arylacetylene (PSA) resin

作者：Bu, Xiaojun[1];Zhou, Yan[1];Huang, Farong[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Laboratoty Specially Funct Polymer Mat & Rela, Shanghai 200237, Peoples R China

年份：2016

卷号：174

起止页码：21

外文期刊名：MATERIALS LETTERS

收录：;EI(收录号：20161302149622);WOS:【SCI-EXPANDED(收录号:WOS:000374575700006)】；

语种：英文

外文关键词：PSA resin; POSS; Nanocomposites; Polymers; Strengthening; Toughening

摘要：A novel octa(propargyl propyl sulfide) POSS (OPPSP) was synthesized by the thiol-halogen reaction between octa(mercaptopropyl) POSS (POSS-SH) and propargyl chloride under phase transfer catalysis. Furthermore, OPPSP was employed as a reinforcing agent to prepare a modified silicon-containing arylacetylene (OPPSP-PSA) resin. The resulting OPPSP-PSA thermoset with 10 wt% of OPPSP exhibits 80.5% and 92.8% increment in flexural strength and impact fractured energy as compared to pristine PSA thermoset. Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer (EDS) are used to observe the dispersion of OPPSP in the fractured surfaces of samples. The results show that both the nano-dispersion of POSS cages and the POSS-enriched "particles" are possible mechanisms behind the improved mechanical properties. (C) 2016 Elsevier B.V. All rights reserved.