环氧大豆油和纤维改性氧化沥青的制备及其结构与性能

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1、苏州大学硕士学位论文环氧大豆油和纤维改性氧化沥青的制备及其结构与性能姓名：李利坤申请学位级别：硕士专业：材料学指导教师：朱新生20080501环氧大豆油及纤维改性氧化沥青的制备及其结构与性能中文摘要酯纤维吸油作用，降低了沥青的流动性。本文创新点在于：在国内外率先采用环氧大豆油提高氧化沥青的延度与针入度，并使断裂韧性明显改善。关键词：沥青，环氧大豆油，聚酯纤维，聚丙烯腈纤维，微观结构，性能，耐疲劳性Ⅱ作者李利坤指导教师朱新生PreparationandmierostructureandpropertiesofmodifiedoxidizedasphaltwithESOandf

2、iberAb——s缸'actandmicrostructureandpropertiesofmodifiedoxidizedasphaltwithESOandfibersAbstractWiththeincreasingofroadconstructionandtheimprovingofhighwayqualityinChina,thedemandofthehigh—gradepavementasphaltisgettinghigher,thustheproductionoftheasphaltisneededurgently．Atpresenttheexpedients

3、olutionismassimportation．Moreover,theroadspaved、^，imgeneral-purposeasphaltCan’taffordthegradualincreaseofheavytrafficandsuffertheover-loadedvehicles，theroadconstructionpracticehasshowedthatthedosagingofsyntheticfibersintoasphaltextendedthepavementservicelifeinadditiontoitseconomicalcompeti

4、tionandconvenientapplication．111eepoxidizedsoyabeanoilWasusedtomodifyoxidizedasphalt，andthemodificationmechanism，themicrostructureandthephysicalandmechanicalpropertiesaswellasthethermallyagingbehaviorofthemodifiedwereinvestigatedindetail．Twokindsofpolyesterfibersweremixedintothemodifiedasp

5、haltandtheirstructure-propertyrelationswerestudied．ThestructureandpropertiesoftheAH-70heavytransportpavementasphaltandofthemodifiedoxidizedasphaltwerecomparedafterpolyacrylonitrilefiberWasadded．Theimportantconclusionsweremadeasfollows：(1)Thesofteningtemperatureandthepenetrationweredecrease

6、dandtheductilityWasincreased、析ththeincreaseofepoxidizedsoyabeanoil．Theexperimentalresultsindicatedthat，agitationtemperaturemajorlycontrolledtheoxidationofasphalLwhilemixingtimemainlydominatedthemixtureuniformity．Themicrostructuralanalysisofthemodifiedasphaltshowedthat，thereexistedastrongph

7、ysical—chemicalinteractionbetweenthepolarepoxygroupofepoxidizedsoyabeanoilandthehydroxylgroupinoxidizedasphalt，whichsubstantiallyimprovedthecompatibilityoftheoilandtheasphalt．Thephysicalandmechanicalpropertiesofthemodifiedasphaltmoreorlessapproximatedthoseofhi