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Actuation and Shape SMP/CNTs N Memory Effect of anocomposites

資料類(lèi)型：

PDF文件

關(guān)鍵詞：

smart material shape memory polymer actuator carbon
nanotue

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：

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

上傳時(shí)間：

2013-06-21 13:54:37

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