Study of Anisotropic Mechanical Reinforcement,Wear Resistance of Long Aligned Carbon Nanotube/Epoxy Nanocomposite: from Nanoscale to Macroscale，第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）-中国聚合物网,论文下载

Study of Anisotropic Mechanical Reinforcement,Wear Resistance of Long Aligned Carbon Nanotube/Epoxy Nanocomposite: from Nanoscale to Macroscale

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关键词：

aligned carbon nanotube (acnt) anisotropy epoxy nanocomposite
mechanical reinforcement tribological performance

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105K

所属学科：

分子表征

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第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）

简介：

Incomparisontothemodestimprovementsofmechanicalperformancesandwearresistanceofcarbonnanotubes(CNTs)reinforcedpolymercomposites[l],alignedcarbonnantubes(ACNTs)reinforcedpolymercompositesarehighlyconsideredtobenewinnovativenanomaterialsc2].Inthisstudy,anewcontinuouslyalignedcarbonnanotubes(ACNTs)reinforcedepoxycompositewasfabricatedbywettingasgrownarraysofACNTs.TheuniformdistributionofACNTsintheepoxycompositeswasconfirmedbyhighmagnificationscanningelectronmicroscopyobservations.TheanisotropyinmechanicalreinforcementandwearresistanceofepoxynanocompositefilledwithACNTsindifferentorientationswasstudiedforthefirsttimefromnanoscaletomacroscale.Nanoindentationtechniquesfromnano-microscaleindicatedthatadditionofACNTtopureepoxywashighlyeffectiveinimprovingthehardness,elasticmodulusandscratchresistanceofepoxy,andnanocompositesinantiparallelorientationofACNTshowedthehighestenhancements.Nevertheless,bulkscaletestsshowedthatdifferentfromnanoindentationtestingresults.ACNTinnormalorientationwereobservedthehighestreinforcingeffectofmacroscopiccompressionpropertiesandwearresistanceofpristineepoxy.Owingtoitsload-transfer-favoredstructure,1.Ivol%ACNTsachievedordersofmagnitudehigherimprovementinthewearresistanceofepoxycompositecomparedtorandomlydispersedCNTsinepoxyreportedbeforecl].Basedonmicroscopicobservations,newACNTsrelatedtoreinforcementandwearmechanismswerefurtherproposedanddiscussed.

作者：

H. Y. Wang, C. Li, Y. J. Zhu, Y. Lin

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2013-06-26 13:28:29

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