纖維增強摩阻材料的沖擊韌性及其斷口的研究.pdf

1、山東大學碩士學位論文纖維增強摩阻材料的沖擊韌性及其斷口的研究姓名：董抒華申請學位級別：碩士專業(yè)：材料科學與工程指導教師：王成國2001.11.8山ji人學碩學位論文ABSTRACTItiSfoundthatimpactresistancehasbeengreatlyimprovedbyinterfusingnitrilerubberintophenolicresin，especiallyimpactresistanceOffiberre

2、inforcedfrictionalmaterialSmadeupOflatexrubberandresinisbetterIntherangeofexperiment，frictionalmaterialshasmaximalimpactstrengthwhenadhesiveweightis2829％withthe15and19ratiOOfresinandnitrilerubber；impacttoughnessOffrictio

3、nalmaterialSisbestWith28％fiberweightandnotchedimpactstrengthiS62kJ／m。；impacttOughnessOffrictiOnalmaterialshasmaximum527kJm。Whenka01inwejghtiS18％ImpacttoughnesSOffrictionalmaterialSpresentsnonmonotoniclinearrelationshipwi

4、ththechangeofscaleofcarbonandrefractory1mpactstrengthandhardneSShaveallefleetonthetribolOgiCalproperty；however，theydon’tuniquelydependonwearrateandwearcoefficientHardnessplaysaleadingrolewhenadhesiveweightislower；ontheot

5、herhand，impacttoughnessPlaysamajorrolewhenadhesiveweightishighItiSoneoftheprimarymeasurestoimprovethewearingresistanceoffrictionalmaterialsbycontrollingtheinterfacebondingInterfacecanpassivationthetipofcracksandcanchange

6、theextendedapproachOfcracksThefracturesurface0fnewbrakematerialSisstudiedbymeansofJXA一840scanningelectronmicroscopy(SEM)madeinJapanItisfoundthatfiberfracture，fiberpullout，fiberbridge，interfacedebonding，crackbranchingandv