活性炭负载二氧化钛改性聚丙烯熔喷无纺布的制备及吸附性能_孟庆杰
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2020-02-29 22:36:34
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第51卷第6期2019年12月Vol.51No.6Dec.2019南京航空航天大学学报JournalofNanjingUniversityofAeronautics&Astronautics活性炭负载二氧化钛改性聚丙烯熔喷无纺布的制备及吸附性能孟庆杰1兰天1李南1迟长龙2孙波3(1.航天特种材料及工艺技术研究所,北京,100074;2.河南工程学院材料与化学工程学院,郑州,450000;3.空军装备部驻北京地区第二军事代表室,北京,100074)摘要:将活性炭、二氧化钛、聚丙烯等原料经物理共混处理,通过熔喷制成活性炭负载二氧化钛改性聚丙烯熔喷无纺布。采用热分析曲线(Differentialscanningcalorimeter,DSC)、X射线衍射(X⁃raydiffraction,XRD)、电子织物拉伸机、可见分光光度计等对改性无纺布的微观结构、结晶性能、力学性能、吸附性能进行表征。结果表明:活性炭负载二氧化钛比例为1∶3时活性炭负载二氧化钛的降解率高,二氧化钛分布均匀,依照此比例的活性炭负载二氧化钛与聚丙烯进行熔喷制备无纺布。随活性炭负载二氧化钛的加入量的提高,活性炭负载二氧化钛改性聚丙烯无纺布的吸附性能增强,当活性炭负载二氧化钛的添加量为4%时,吸附性能较好;活性炭负载二氧化钛的添加使无纺布的力学性能出现最大值,且无纺布的结晶度和熔点无明显变化。关键词:聚丙烯;活性炭;二氧化钛;力学性能;吸附中图分类号:O643文献标志码:A文章编号:1005⁃2615(2019)06⁃0857⁃07PreparationandAdsorptionofTitaniumDioxide/ActivatedCarbon/PolyproyleneNonwovensbyMeltBlownMethodMENGQingjie1,LANTian1,LINan1,CHIChanglong2,SUNBo3(AerospaceSpecialMaterialsandProcessingTechnologyInstitute,Beijing,100074,China;2.DepartmentofMaterialandChemicalEngineering,HenanUniversityofEngineering,Zhengzhou,450000,China;3.TheSecondMilitaryRepresentativeOfficeofAirForceEquipmentDepartmentinBeijing,Beijing,100074,China)Abstract:Activatedcarbon/TiO2/polypropylene(PP)non⁃wovenswerepreparedbyphysicalblendingofactivatedcarbon/TiO2/PP.Themicrostructure,crystallineproperties,mechanicalpropertiesandadsorptionpropertiesofPPnonwovenswerecharacterizedbydifferentialscanningcalorimeter(DSC),X⁃raydiffraction(XRD),electronicfabricstretchingmachineandvisiblespectrophotometer.TheexperimentalresultsshowthatthedegradationrateofTiO2supportedonactivatedcarbonishighandthedistributionofTiO2isuniformwhentheratioofactivatedcarbontotitaniumdioxideis1∶3,sotheratioofactivatedcarbon/TiO2andPPisusedtopreparenon⁃wovenfabricsbymeltspraying.Therefore,the1∶3ratioofactivatedcarbon/TiO2toPPisusedtomelt⁃blownthenonwovenfabric.Withtheincreaseoftheamountofactivatedcarbon/TiO2,theadsorptionperformanceofactivatedcarbon/TiO2/PPnon⁃wovenfabricsisenhanced.Whentheamountofactivatedcarbonloadedtitaniumdioxideis4%,theadsorptionperformanceisbetter;theadditionofactivatedca
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