细鳞片膨胀石墨.doc

细鳞片膨胀石墨&聚苯胺导电复合材料的制备研究摘要以十二烷基苯磺酸钠为乳化剂，过硫酸铵为聚合引发剂，盐酸和细鳞片膨胀石墨为掺杂剂，利用乳液聚合法制备了细鳞片膨胀石墨&聚苯胺导电复合材料。系统研究了膨胀石墨的掺杂量、盐酸用量、乳化剂及引发剂对电导率的影响。最佳实验条件为：石墨掺杂6%，盐酸6mL，乳化剂5g，引发剂3.25g。此条件下的电导率为0.75S/cm。通过超声波搅拌预插层法制备了纳米膨胀石墨&聚苯胺复合材料。XRD分析表明，苯胺已有效插入石墨层间并且聚合。SEM分析表明复合材料粒度较为均匀，形成了剥离性的复合材料。关键词聚苯胺，膨胀石墨，导电性，乳液聚合，超声波，插层ABSTRACTUsingSDBSasemulsifier,ammoniumsulfateaspolymerizationinitiator,hydrochloricacidandfineflakeexpansiongraphiteasdopingagents,fineflakeexpandedgraphite&polyanlinecompositematerialwaspreparedbyemulsion.Theeffectsofvariousconditionsofpreprationoffineflakeexpandedgraphite&polyanlinecompositematerialonitsconductivitywasinvestgatedsystematically.Theoptimumconditionswere6%fineflakeexpandedgraphite,6mLhydrochloricacid,5gemulsifier,3.25ginitiator.Undertheseconditions,theconductivityis0.75S/cm.ThepolyanilineexpandedgraphitecompositematerialwaspreparedbyultrasoundStiringpre-intercalationandwascharacterizedusingXRDandSEMtechniques.Theresultsprovedthattheanilinehaseffectivelyinsertedbetweenthelayersofgraphiteandpolymerizationandthatcompositematerialshasuniformsizeandfragmentation.KeywordsPolyaniline,Expandedgraphite,Emulsionpolymerization，Intercalation目录TOC\o"1-3"\u摘要PAGEREF_Toc200979263\hIABSTRACTPAGEREF_Toc200979264\hII1绪论PAGEREF_Toc200979265\h11.1课题背景PAGEREF_Toc200979266\h11.2膨胀石墨PAGEREF_Toc200979267\h11.2.1石墨的基本性质PAGEREF_Toc200979268\h11.2.2膨胀石墨的应用PAGEREF_Toc200979269\h11.3聚苯胺PAGEREF_Toc200979270\h31.3.1聚苯胺的结构PAGEREF_Toc200979271\h31.3.2聚苯胺的性质PAGEREF_Toc200979272\h31.4聚苯胺的复合改性PAGEREF_Toc200979273\h41.4.1聚苯胺/聚合物复合材料PAGEREF_Toc200979274\h41.4.2聚苯胺/无机物复合材料PAGEREF_Toc200979275\h51.5膨胀石墨/聚苯胺复合材料的研究现状PAGEREF_Toc200979276\h61.6本课题的研究内容PAGEREF_Toc200979277\h72复合材料制备实验条件的确定PAGEREF_Toc200979278\h82.1实验药品及仪器PAGEREF_Toc200979279\h82.1.1实验药品PAGEREF_Toc200979280\h82.1.2实验仪器PAGEREF_Toc200979281\h82.2实验方案PAGEREF_Toc200979282\h82.3细鳞片膨胀石墨的制备PAGEREF_Toc200979283\h92.3.1石墨原料的处理PAGEREF_Toc200979284\h102.3.2膨胀石墨的制备PAGEREF_Toc200979285\h