资源描述：
《煤焦油软沥青的流变学行为研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、.煤焦油软沥青的流变学行为研究摘要流变行为是材料在熔融态和流动状态形变时的表现。它主要研究材料在应力、应变、温度、湿度、辐射等条件下与时间因素有关的变形和流动的规律。煤焦油软沥青是一种结构和组成非常复杂的混合物，其分子量和分子结构各不相同，煤焦油软沥青的性质是这些不同组分的综合反映。本文以煤焦油软沥青为原料，通过反应釜对其进行空气氧化改质，得到4种软化点不同的改质沥青。分析改质沥青的软化点、甲苯不溶物、喹啉不溶物、结焦值和灰分等性能指标，并关联它们与软化点之间的内在关系；接着在高温流变仪上研究原料软沥青、4种改质沥青的流变学性能，评价在不同转速和温度下试样的粘度变化情况，获得粘温曲线，研究
2、沥青流体的流变性能；根据试样的粘温曲线数据，计算不同软化点煤沥青的粘流活化能；为悬浮法或乳化法制备沥青微球的提供理论依据和数据。实验表明，煤焦油软沥青的粘度随温度的增大而逐渐减小，随剪切应力的增大逐渐减小，并且温度和剪切应力越大，对煤焦油沥青的影响越小。关键词：煤焦油软沥青；流变行为；粘温曲线...RheologicalbehaviorofsoftcoaltarpitchAbstractRheologicalbehaviorofthematerialinthemoltenstatewhenthestateofdeformationandflowperformance.Itmainlystu
3、diesthematerialunderstress,strain,temperature,humidity,radiationandotherconditionsofthelawofthedeformationandflowoftime-relatedfactors.Softcoaltarpitchisaverycomplexmixtureofstructureandcomposition,themolecularweightandmolecularstructurevaries,thenatureofsoftcoaltarpitchisacomprehensivereflectiono
4、fthesedifferentcomponents.Inthispaper,softcoaltarpitchasarawmaterial,inthispaper,softcoaltarpitchasarawmaterial,itsmodificationbyairoxidationreactor,toobtainfourkindsofsofteningpointdifferentmodifiedbitumen.Analysisofmodifiedbitumensofteningpoint,tolueneinsoluble,quinoloneinsolublesandashcokingval
5、uesandotherperformanceindicators,andassociatethemwiththesofteningpointoftheintrinsicrelationshipbetween;Thenstudymaterialssoftasphalt,rheologicalpropertiesoffourkindsofmodifiedasphaltathightemperaturerheometer,viscositywasevaluatedatdifferentspeedsandtemperaturesofthesample,obtainviscosity-tempera
6、turecurve,rheologicalpropertiesofbitumenfluid;Accordingtodataofthesampleviscosity-temperaturecurve,Calculatedifferentsofteningpointcoaltarviscousflowactivationenergy;Asuspensionoremulsifiedasphaltpreparedmicrospheresprovideatheoreticalbasisanddata.Experimentalresultsshowthattheviscosityofthesoftco
7、altarpitchwithincreasingtemperatureanddecreases,Withincreasingshearstressdecreases,andthetemperatureandshearstress,thesmallertheimpactoncoaltarpitch.Keywords:Softcoaltarpitch;Rheologicalbehavior;Viscosity-tempera
