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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于聚醚胺一步还原和共价接枝的氧化石墨烯制备阻燃环氧树脂纳米复合物
DOI: 10.11777/j.issn1000-3304.2015.15079, PP. 1344-1352
Keywords: 石墨烯,聚醚胺,共价接枝,环氧树脂纳米复合物,阻燃
Abstract:
通过环氧氨解反应,将聚醚胺(HuntsmanJeffamineM-2005)共价接枝到氧化石墨烯表面,同时实现氧化石墨烯的还原.通过红外光谱(IR)、X射线光电子能谱(XPS)、拉曼光谱、X射线衍射分析(XRD)、以及透射电镜(TEM)对聚醚胺接枝的还原石墨烯材料进行了表征.结果表明,聚醚胺不仅成功地接枝到了还原氧化石墨烯表面,而且还一定程度上还原了氧化石墨烯.进一步地,将聚醚胺接枝的还原氧化石墨烯添加到环氧树脂中,制备了功能化石墨烯/环氧树脂纳米复合物.热重分析(TGA)和极限氧指数(LOI)测试显示当聚醚胺接枝的还原石墨烯添加量为10wt%时,复合物的残碳率(700℃)和LOI分别提高了137%和30%,表明聚醚胺接枝的还原石墨烯显著提高了环氧树脂的阻燃性能,是一种优良的具有潜在应用价值的阻燃剂.
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