• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of inorganic and organometallic polymers and materials >Synthesis, Morphology and Viscoelastic Properties of Epoxy/Polyhedral Oligomeric Silsesquioxane (POSS) and Epoxy/Cyanate Ester/POSS Nanocomposites
【24h】

Synthesis, Morphology and Viscoelastic Properties of Epoxy/Polyhedral Oligomeric Silsesquioxane (POSS) and Epoxy/Cyanate Ester/POSS Nanocomposites

机译：环氧/多面体低聚倍半硅氧烷（POSS）和环氧/氰酸酯/ POSS纳米复合材料的合成，形貌和粘弹性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

TriSilanolPhenyl-polyhedral oligomeric silsesquioxane (POSS-1) (C_(42)H_(38)O_(12)Si_(7)), 1-15 wt%, was incorporated into aliphatic epoxy resin (Clearstrem Products, Inc.) with aliphatic diamine curing agents and cured. This epoxy resin was also blended with an equal weight (50/ 50 w/w) of aromatic cyanate ester resin, Lonza' s PT-15, and 1-15 wt% of POSS-1 and cured. These composites were characterized by FT-IR, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (X-EDS), dynamic mechanical thermal analysis (DMTA) and three-point bending flexural tests. XRD and X-EDS measurements were consistant with partial molecular dispersion of the POSS units in the continuous matrix phase, together with POSS aggregates. TEM and SEM show that POSS-1-enriched nanoparticles are present in the matrix resins of both the epoxy/POSS and epoxy/cyanate ester/ POSS-1 composites. The storage bending moduli, E', in the rubbery region and the glass transition temperatures, T_g, of epoxy and epoxy/cyanate ester 1-5% POSS-1 composites are higher than those of the reference resins. Small amounts (≤5 wt%) of POSS-1 improved E' and T_g of both systems and raised flexural strengths and moduli.
机译：将TriSilanol苯基-多面体低聚倍半硅氧烷（POSS-1）（C_（42）H_（38）O_（12）Si_（7））（重量百分比为15％）掺入脂肪族环氧树脂（Clearstrem Products，Inc.）二胺固化剂并固化。还将这种环氧树脂与等重量（50/50 w / w）的芳族氰酸酯树脂，Lonza的PT-15和1-15 wt％的POSS-1混合并固化。这些复合材料的特征在于FT-IR，X射线衍射（XRD），透射电子显微镜（TEM），扫描电子显微镜（SEM），X射线能量色散光谱（X-EDS），动态机械热分析（DMTA）和三点弯曲挠曲测试。 XRD和X-EDS测量与连续基质相中POSS单元的部分分子分散以及POSS聚集体一致。 TEM和SEM显示，在环氧/ POSS和环氧/氰酸酯/ POSS-1复合材料的基质树脂中均存在富含POSS-1的纳米颗粒。环氧和环氧/氰酸酯1-5％POSS-1复合材料在橡胶状区域中的储能弯曲模量E'和玻璃化转变温度T_g均高于参考树脂。少量（≤5wt％）的POSS-1可改善两个系统的E'和T_g，并提高抗弯强度和模量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号