-50-第45卷第6期非金属矿Vol.45No.62022年11月Non-MetallicMinesNovember,2022边缘氧化石墨烯及水泥复合材料的制备研究张巨璟1*张永胜2（1陕西职业技术学院建筑工程学院，陕西西安710038；2太原理工大学土木工程学院，山西太原030024）摘要石墨烯和氧化石墨烯（GO）已在水泥基材料中得到广泛应用，但石墨烯不易分散，GO易与阳离子交联团聚。针对上述问题，本试验制备一种边缘氧化的石墨烯（EOG），掺入水泥制成EOG水泥基复合材料。结果表明，EOG具有良好的晶体单层结构，其边缘被氧化而基面结构保持良好；在水泥模拟孔隙溶液中，EOG分散性能较好；力学性能分析表明，不同于0.05%GO的最佳掺量，EOG在水泥中的最佳掺量为0.1%，0.1%EOG水泥基复合材料28d抗折和抗压强度分别为8.27MPa和57.71MPa，较空白样分别提高28.62%和35.15%。与GO类似，EOG有促进水泥水化的作用，EOG水泥基复合材料较GO内部结构更紧密，进而提高了材料的力学性能。关键词边缘氧化石墨烯；水泥；分散性；力学性能中图分类号：TU525；TB332文献标志码：A文章编号：1000-8098(2022)06-0050-05StudyonPreparationofEdge-OxideGrapheneandCement-BasedCompositesZhangJujing1*ZhangYongsheng2(1CollegeofConstructionEngineering,ShaanxiVocationalandTechnicalCollege,Xi’an,Shaanxi710038;2CollegeofCivilEngineering,TaiyuanUniversityofTechnology,Taiyuan,Shanxi030024)AbstractGrapheneandGrapheneoxide(GO)hadbeenwidelyappliedincement-basedmaterials.However,thepoordispersionofgrapheneandthere-aggregationofGOresultingfromthecrosslinkbydivalentcationsstillexisted.Inthispaper,theedge-oxidegraphene(EOG)waspreparedandmixedwithcementtomakeEOGcement-basedcomposites.TheresultsconfirmedthatEOGhadthewell-crystallizedsingle-layerstructurewithoxidizededgeandgoodplanestructure.Incementsimulatedporesolution,EOGexhibitedgooddispersionperformance.ThemechanicalpropertyanalysisshowedthattheoptimalcontentofEOGincementwas0.1%,GOwas0.05%.Theflexuralstrengthandcompressivestrengthof0.1%EOGcement-basedcompositewere8.27MPaand57.71MPaafter28days,increasedby28.62%and35.15%comparedwiththecontrol,respectively.SimilartoGO,EOGalsopromotedcementhydration,buttheinternalstructureofEOGcement-basedcompositeswastighter,whichimprovedtheme...
