乳液法仿生超疏水sio2薄膜的制备与性能的的研究

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1、摘要后仍具有超疏水自清洁性能，室外放置的薄膜，10天后就失去超疏水性能。以二氧化硅水溶胶为水相，环己烷为油相，采用十二烷基硫酸钠（SDS）和十六烷基三甲基溴化铵（CTAB）复配体系为表面活性剂制备了稳定的油包水（W/O）型乳液。通过乳液法制备了具有花样结构的疏水薄膜。花样结构是一个微米纳米相结合的分级结构，它在薄膜表面随机分布并呈现出不同姿态。由于花样结构在薄膜表面富集程度不够，薄膜/水接触角仅为121°，不能满足超疏水的要求。本论文的研究结果表明：采用不同的途径制备超疏水薄膜，实验中的各项参数均对薄膜的表面微观结构产生影响，微观结构的改变直

2、接影响薄膜的表面粗糙度，进而影响薄膜的疏水性能。无机薄膜相对于有机薄膜具有更好的耐候性能，并且和基体有更好的结合力。关键词：超疏水薄膜；乳液法；滚动角；自清洁；表面形貌II山东轻工业学院硕士学位论文ABSTRACTInspiredbythe“LotusEffect”,manypeopletakeinterestsintheresearchofsuperhydrophobicsurfaces.Superhydrophobicmaterialsimitatinglotusleaveshavewideapplicationsinmanyfields

3、,includingfogcondensation,snowsticking,coatingstoresisitwater,antifoulingclothing,pipelinetransportandmicrolitersyringe.Inthispaper,therelatedtheoryofsuperhydrophobicmaterialandthesuperhydrophobicphenomenoninnaturewerementioned,andthenewtechniquesinpreprarationofsuperhydrop

4、hobicsurfaceswerealsoconcluded.Meanwhiletheproblemsexistedinthefieldofthesuperhydrophobicresearchandthethefutureapplicationsofthematerialwerealsodiscussed.Inaddition,theclassification,preparationandapplicationofemulsionwerealsoreferred.Therearetwowaystoacquiresuperhydrophob

5、icsurfaces,oneismodifyinglowsurfaceenergyagentonsolidsurfaceswhichhavemicro-nanoroughstructures;theotherisbuildingmicro-nanoroughstructuresonthematerialsurfaceswhichhavelowsurfaceenergy.Betweenwhichthemethodofbuildingmicro-nanostructureisthekeyforthepreparationofsuperhydrop

6、hobicmaterial.Inthisarticle,westartedwithbuidingstructure,andobtainedsuperhydrophobicsurfacesimitatinglotusleavesbybuildingmicro-nanostructureondifferenthostmaterials.Colloidalparticlesinpolymeremulsionwereusedastemplate,andthesuperhydrophibicfilmswithbeehive-likestructurew

7、ereobtainedbytheaggregationofthesilicaparticlesontheemulsionparticlesandthedispersionofthesilicaparticlesinthewaterphase.Theresultshowedthatthefilmsgainedaporousstructureafterheattreatment.Thefilmchangedfromsuperhydrophilictosuperhydrophobicaftermodifiedbywithtrimethylchlor

8、osilane(TMCS)inethanoltoformaself-assembledmonolayerwithlowsurfaceenergy.Thewaterc