Design of Multifunctional Interphases in Composites，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

Design of Multifunctional Interphases in Composites

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carbon nanotubes glass fibre multifunctional interphase sensor
electromechanical switch

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104K

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：

Nanoscalematerialshavebeenemployedintointerphaseofcompositesinordertoimplementmultiplefunctions,suchasmechanical,electrical,hydrothermalandchemical.Multi-walledcarbonnanotubes(CNTs)weredepositedontoelectricallyinsulatingglassfibresurfaces,leadingtotheformationofsemiconductingCNTs-glassfibresandinturnmultifunctionalfibre/polymerinterphases.First,thesemiconductingCNTs-glassfibredemonstratedahighsensitivitytowardsstrainsbysimultaneousdeterminationofelectricalresistanceundertensileloading,whichhighlightsapotentialasin-situmicrosensorinmaterials.Second,theinterfacialshearstrengthofsinglefibrecompositesexhibitedmorethan30%improvement.Third,anin-situstrainsensorwasmanufacturedtoreal-timemonitorthemicrocrackincompositesinsteadofexternalsensors.Atthesametime,thein-situstrainsensorshowedauniqueabilityofpredictingtheultimatefracturepriortoitsoccurrence.Obviously,themulti-individualfibrecompositeimprovestheearlywarningcapabilityandsensitivity.Monitoringtheresistancevariationofthesinglefibrecompositewasconductedundercyclicloadingwithprogressivelyincreasingthestrainpeaksinordertofurtherinvestigatetheresponseofin-situsensortotheinterphasedamageprocess.Utilizingthemicrocrackassociatedwithfibrebreakage,anewelectromechanicalswitchwasmadeandthe"junction-break"mechanismwasproposedtocharacterizetheswitch.Finally,theCNTs-glassfibrewasusedasanin-situphysical-chemicalsensortocharacterizetheprocessesofcuringorcrystallizationofpolymersthroughmonitoringthelowmobilityofchargecarriersininsulativematerials.Theglasstransitionwasinterpretedbytheresistancemeasurement.

作者：

E. Mader , S. L. Gaol, J. Zhangl , N. Wiegand

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2013-06-21 13:11:59

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