氧化石墨烯纳米片_环氧树脂复合材料的制备与性能_周宏DOI:氧化石墨烯纳米片/环氧树脂复合材料的制备与性能周宏1,2,3*,朴明昕1,李芹1,密鑫1,杨玉森1,魏东阳1,齐兵1(1.哈尔滨理工大学材料科学与工程学院,哈尔滨150040;2.哈尔滨理工大学,工程电介质及其应用教育部重点实验室,哈尔滨150080;3.哈尔滨理工大学黑龙江省电介质工程国家重点实验室培育基地,哈尔滨理工大学,哈尔滨150080)摘要:以天然鳞片石墨为原料,采用改进的Hummers法制备氧化石墨,离心剥离制备出氧化石墨烯(GO)纳米片,以硅烷偶联剂KH-560为改性剂,超声共混制备GO纳米片/环氧树脂复合材料。采用XRD、拉曼光谱、FT-IR、TEM表征了GO纳米片层的结构与形貌。测试了GO纳米片/环氧树脂复合材料的热稳定性、力学性能及介电性能。结果表明,GO纳米片的加入提高了GO纳米片/环氧树脂复合材料的热稳定性;随着GO纳米片填充量的增加,GO纳米片/环氧树脂复合材料的冲击强度和抗弯性能先增加后降低,其介电常数和介电损耗则先减小后增加。填充量为0.3wt%的GO纳米片/环氧树脂复合材料的热分解温度Td5由纯环氧树脂的400.2℃提高到424.5℃,而冲击强度和弯曲强度分别在GO填充量为0.2wt%和0.3wt%时达到最大,分别由纯环氧树脂的10.5kJ/m2提高到19.7kJ/m2和80.5MPa提高到104.0MPa)。关键词:氧化石墨烯纳米片;环氧树脂;复合材料;力学性能;介电性能Preparationandpropertiesofgrapheneoxidenanosheeets/epoxycompositesZHOUHong1,2,3*,PIAOMingxin1,LIQin1,MIXin1,YANGYusen1,WEIDongyang1,QiBing1(1.SchoolofMaterialsScienceandEngineering,HarbinUniversityofScienceandTechnology,Harbin150040,China;2.StateKeyLaboratoryBreedingBaseofDielectricsEngineering,HarbinUniversityofScienceandTechnology,150080,Harbin,China;3.KeyLaboratoryofEngineeringDielectricsanditsApplication,MinistryofEducation,HarbinUniversityofScienceandTechnology,150080,Harbin,China.)Abstract:Grapheneoxide(GO)nanosheetshavebeenpreparedfromnaturalflakegraphitebyoxidationintercalationandcentrifugalpeeling.TheGOnanosheetsweremodifiedbysilanecouplingagentKH-560.TheGOnanosheets/epoxycompositeswerepreparedbyultrasonicmixingmethod.ThestructureandmorphologyofGOnanosheetswerecharacterizedbyXRD,RamanspectrumandTEM.Thethermal,mechanicalpropertiesoftheGOnanosheets/epoxycompositesweretested.TheresultsshowthatthethermalstabilitiesofthecompositeareimprovedbyaddingGOnanosheets.TheimpactstrengthandbendingstrengthfirstincreaseandthendecreasewithincreasingGOnanosheetsloading.TheeffectsofGOnanosheetscontentondielectricconstantanddielectriclossfirstincreasedandthendecreased.ThethermaldecompositiontemperatureTd5wasimprovedfrom400.2℃forthepureepoxyto424.5℃fortheGOnanosheets/epoxycompositeswith0.3wt%GOnanosheetsloading.Furthermore,theimpactstrengthandbendingstrengthofGOnanosheets/epoxycompositeswith0.2wt%and0.3wt%GOnanosheetsrespectively,reachthemaxmam,increasefrom10.5kJ/m2to19.7kJ/m2andfrom80.5MPato104.0MPa.Keywords:grapheneoxidenanosheets;epoxy;composites;mechanicalproperties;dielectricproperties收稿日期:2022-10-29;录用日期:2022-12-22;网络出版时间:网络出版地址:基金项目:黑龙江省教育厅面上项目(12511067);黑龙江省大学生创新训练项目(202210214022);黑龙江省高校科技创新团队建设计划(2022TD008)通讯作者:周宏,博士,教授,研究方向为纳米复合电介质材料的制备与性能研究。---本文来源于网络,仅供参考,勿照抄,如有侵权请联系删除---E-mail:hongzhou@https://www.sodocs.net/doc/a617865500.html引用格式:周宏,朴明昕,李芹,等.氧化石墨烯纳米片/环氧树脂复合材料的制备[J].复合材料学报,2022,32(x):xxx-xxx.ZhouHong,Piaomingxin,LiQin,etal.Preparationandpropertiesofgrapheneoxidenanosheeets/epoxycomposites[J].ActaMateriaeCompositaeSinica,2022,32(x):xxx-xxx.10.13801/https://www.sodocs.net/doc/a617865500.htmlki.fhclxb.20220105.0012022-01-0508:38https://www.sodocs.net/doc/a617865500.html/kcms/detail/11.1801.TB.20220105.0838.001.html本文来源:网络收集与整理,如有侵权,请联系作者删除,谢谢!---本文来源于网络,仅供参考,勿照抄,如有侵权请联系删除---