Actuation and Shape SMP/CNTs N Memory Effect of anocomposites，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

Actuation and Shape SMP/CNTs N Memory Effect of anocomposites

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smart material shape memory polymer actuator carbon
nanotue

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105K

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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：

Shapememorypolymers(SMPs)havethecharacteristicssuchaslargerecoverability,lightweight,superiormoldingpropertyandlowercost.TheseadvantageshavemadetheSMPsbecomeoneoffunctionalmaterialsinvariousfields.Inthispaper,SMPnanocompositeswithseveralmodifiedcarbonnanotubes(CNTs)aredevelopedandtheiruniquecharacteristics,suchasshapememoryeffect,electroactiveresponseunderdifferentDCvoltages,areinvestigatedforthewiderapplicationsinmechanicalandelectrical/electronicfields.Multi-walledCNTs(d=20一30nm)wereusedasthefiller.ToimprovethedispersionofpristineCNT,radicalreactiontreatmentandothermildhydrothermaltreatmentswereconducted.Mechanicalpropertieswereevaluatedusingtensiletesterandactuatorperformancewasevaluatedbymeasuringthebendingdisplacementofthefilmsusinglaserdisplacementmeter,controller,digitalelectrometerandhigh-voltagepowersupply.Volumeresistivityandpermittivityofthefilmwerealsomeasured.Spacechargemeasurementwasdoneusingpulsedelectroacousticnon-destructivetestsystem.Asaresult,theshapememorypolymer(SMP)basednanocompositesweredevelopedandtheirshapememorypropertiesandelectroactivepropertywereexaminedsystematically.Thecarbonnanotubesasthefillerweretreatedbyradicalreactionandmildhydrothermaltreatment.Then,thedevelopednanocompositeshaveshownagoodmechanicalpropertiesandelectroactiveactuation.Theykeephighstrainrecoveryabilityafterrepetitiveloadingcyclebehaviorandshapememorycharacteristics.Thiswillmakethedevelopedmaterialswhichcanbeutilizedforthecycleapplicationwithanyshapeindailylife.ElectricalpropertiesofdevelopedfilmsofSMP/treatedCNTarediscussedaccordingtothevolumeresistivityandspacechargemeasurementresults.Intheactuationbehavior,thefilmsbenttothecathodesidewhenvoltageisappliedandrevertedtoitsoriginalpositionwhenvoltageisremoved.Themechanismofactuationbehaviorisdiscussed.EachtypeofCNTsmodificationhasuniqueeffectsontheactuatorperformanceofnanocompositefilm,whichwillberespectedforfurtherdevelopmentofactuators.

作者：

Q. Q. Nil* ,G. J. H. Melvin, H. Xia

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2013-06-21 13:54:37

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