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1、西北民族大学化工学院学院（部）期末考试表面活性剂方案（A）每位学生自选题目，查阅文献,写一篇综述性论文，字数不少于3000字（要求：1.中文摘要,关键词,英文摘要,keyword,参考文献写全;2.参考文献不少于20篇，其中外文文献不少于5篇，并附引用外文文献的Abstract及出处）。得分评卷人一．中文摘要及关键词、英文摘要及keyword（40分）得分评卷人二．正文部分（40分）得分评卷人三．参考文献（20分）摘要Thespreadingofdroplettakeplacedwhenthesurfactant-ladent
2、hinliquidfilmsinthepresetfilmorsolidsubstrate,whichisremarkablychangedwiththeinterfacevariationofsolutionsbytheeffectofsurfactant.ThespreadingofsurfactantsolutionsdemonstratesthecomplexfingeringphenomenaandMarangonieffect,withstrongnonlinearcharacteristics.Thespread
3、ingprocessofsurfactantsolutionsiscapturedbythedisjoiningpressurewhenthefilmthicknessislessthanroughly100nm.Itplaysanaccelerationordelayroleinthespreadingwithdifferentdisjoiningpressuremodels.Thedisjoiningpressurecontrolsthestabilityandwettabilityoftheliquidfilm,andi
4、nfluencesthedryspotsformationspeedobviously.Firstly,areasonabledisjoiningpressuremodelofnon-uniformissuggested,combiningthenon-uniformspreadingcharacteristicofsurfactantsolutionbymicroscopicmoleculardynamics,surfacecolloidchemistryandmacrofluiddynamics.Secondly,thet
5、heoreticalmodelandthenonlinearthreeevolutionequationsforthefilmthicknessandsurfaceandbulksurfactantconcentrationsarederivedonthebaseofdiffusiontheory,boundarytheoryandlubricationtheory.Lastly,theprocedureofPDECOLisusedtoperformthenumericalsimulationoftheevolutionequ
6、ationswhenΠ=0,Π=Π（h）andΠ=Π(h,hx,hxx),whichusingfiniteelementforspacediscretizationandGear’smethodintime.Effectsofseveralparametersascapillaryparameter,kineticparameterandsurfactantsolubilityontheprofileoffilmthicknessandsurfactantconcentrationsareexamined.Thepaperha
7、sconsideredthedifferentinfluenceofsurfactantconcentrationonintermolecularrepulsiveandattractiveforces.Linearstabilityisinvestigatedfortheevolutionequationwiththenon-modaltheorymethodbycalculatingthedisturbanceenergygrowthratioandtransientenergygrowthratio.Itnotonlyi
8、mprovesthebasictheoryinthefield,butalsopromotestheapplicationofsurfactantsolutions,andthefurtherprospectsaresuggested.关键字：solublesurfactan
