高温固化环氧2f碳织物增强复合材料制备与性能分析

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1、广东工业大学硕士学位论文unifoumlyandfracturedflatlywithtreatedunderSEM．Interlaminarshearfailurearefrequantlyhappenedtolaminatedcompositesbecauseoftheinterfacebondingstrengthshortage，however，thecarbonknittedfabricsreinforcedcompositescanradiacallyavoidthisshortcoming．The

2、carbonfabricsarepreparedbyknitting，theporosityreducesandthicknessascendsasthecoilradiusdecreases．Whenthecoilradiusis1．5mm，thetensilestrengthis120．7Mpa，thecompactstrengthis65．2KJ／m2，whichwereincreasedby26．4％and38．2％afteraddingin20％shortcutfiber．FromtheSEMpict

3、ureoftensilespecimenfracture，theshortcutfibersweremainlyexistedinthematrixandstrengthenthecompositebysomeextent．TheinfluencesofworkingpressandrotationalspeedonCFRPtribologicalbehaviorwerestudiedwhenadhesive：lubricant=8：2．ItshowsthatCFRPfrictionfactor肛decreas

4、edfirstthenincreasedasthepressgrows，whiledecreasedtobeconstantasspeedgrows．ThepofCFRPishighunderlowpress，abrasivewearemergedbetweenthecoupledringandsurfacematrixlayer．whileitturnedouttobeadhesivewearunderheavyload，themilledfiberandlubricantsadheredtothesurfa

5、ceoftheringwhichcontributedtolubrication，preducedto0．08．Astherotationalspeedgrowsfrom150r／minto650r／min，thevolumewearlossofCFRPadded，肛decreasedby14％becauseofthestrengthenofgrindingslubrication．PreparingCFRPwhichbasedonAG一80，E5lresin，anddiscussingtheinfluence

6、softemperaturetoleranceofpolymeronCFRPfrictionalproperties．Theresultsuggeststhat厅ictionaltemperatureriseleadedtothesplit-upofpolymermoleculechainsandtherelaxationphenomenonwhichmadethewearlossofAG-80basedcomposite．thatcantolerate200。C，ismerely1／10thatofE51ba

7、sedcomposite．CombiningPTFEandcarbonfibersbyhybridknitting．thePTFEtransferfilmwhichreducesthefrictionformedonthesurfaceofthecoupledringwiththeaugmentofP邗Econtent．thefrictioncoefficientwasfounddecreasingto0．04whenthecontentofPTFEreachedto88％onthesurface．Keywor

8、ds：hightemperaturecuredagents；carbonfabricsreinforcedcomposites；mechanicalproperties；tribologicalpropertiesIV目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IAbstract．．．．．．．．⋯．．．．．．．．．⋯．．⋯．．．．．．．．．．．⋯．．．．．