OALib Journal期刊
乙醇胺功能化石墨烯及其PVB复合材料的制备
DOI: 10.3724/SP.J.1105.2014.13231
Keywords: 乙醇胺 ,功能化 ,石墨烯 ,聚乙烯醇缩丁醛 ,复合材料
Abstract:
采用乙醇胺对石墨烯进行改性，一步合成了乙醇胺功能化石墨烯（EFG），探讨了实验条件对该过程的影响.结果表明，乙醇胺在对石墨烯进行功能化的同时还能起到还原氧化石墨烯（GO）的作用，反应产物的吸光度随着乙醇胺的用量、反应温度、反应体系pH值和反应时间的增加而增加，而产物中N元素的含量则随之减小，最佳合成条件为乙醇胺与GO的质量比为4.0，反应温度50℃，体系pH7.0，反应时间12h.然后分别采用溶液共混法和原位还原法，制备了两种不同的EFG/聚乙烯醇缩丁醛（PVB）复合材料，研究了EFG的添加量和加入方式对PVB性能的影响.结果表明，EFG的引入可以极大的提高PVB的导电率、紫外线屏蔽能力和力学性能，且采用原位还原法的效果更好.当EFG添加量为3.0wt%时，复合材料的导电率较PVB升高了约6~7个数量级；当EFG的添加量仅为1.0wt%时，复合材料对紫外线的屏蔽能力就到达了90%以上.
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