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

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PDF文件

關(guān)鍵詞：

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

資料大小：

105K

所屬學(xué)科：

分子表征

來(lái)源：

第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集（2013.6.2-6 武漢）

簡(jiǎn)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

上傳時(shí)間：

2013-06-26 13:28:29

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