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1、超疏水論文：固—液—?dú)鈹U(kuò)散法制備超疏水表面【中文摘要】在自然界中,許多生物表面顯示出特殊表面浸潤性能。所謂的超疏水表面是指水接觸角大于150°的表面。目前,已經(jīng)報(bào)道了許多制備超疏水表面的方法,并展望了超疏水表面在自清潔、減反射增透膜、微流體等領(lǐng)域的潛在應(yīng)用。但是,超疏水表面現(xiàn)有制備方法一般都工藝復(fù)雜和費(fèi)用昂貴,限制了其實(shí)際應(yīng)用。對(duì)此,發(fā)展簡(jiǎn)單方便的超疏水表面制備技術(shù)仍然是一項(xiàng)具有挑戰(zhàn)性的研究課題。本文研究?jī)?nèi)容如下：1.綜述了對(duì)自然界中超疏水現(xiàn)象的研究進(jìn)展,以及在此基礎(chǔ)上所發(fā)展的仿生超疏水表面的制備方法
2、研究進(jìn)展,并對(duì)超疏水表面的性質(zhì)和一些潛在應(yīng)用做出了歸納。2.本文以常見的普通玻璃為基底,探索了一種簡(jiǎn)單的一步制備超疏水涂層的固-液-氣擴(kuò)散方法。同時(shí)采用CA、TG-DSC、FT-IR、FE-SEM對(duì)制備的超疏水涂層進(jìn)行表征,結(jié)果表明,制備的超疏水涂層是由無序排列的甲基硅氧烷聚合物納米纖維構(gòu)成,靜態(tài)接觸角測(cè)試大于160°。3.本文采用二次生長法制備了Silicalite-1沸石膜,重點(diǎn)研究了合成過程中各種合成參數(shù)對(duì)Silicalite-1沸石膜晶貌和性能的影響。并運(yùn)用XRD,TG-DSC和FE-SEM對(duì)
3、其進(jìn)行了表征,結(jié)果表明,合成的純硅沸石膜連續(xù)、致密的,性能優(yōu)異。4.在所制備的Silicalite-1沸石膜表面進(jìn)行疏水化處理,其靜態(tài)水接觸角可以達(dá)到160°,疏水性能優(yōu)異。同時(shí)對(duì)超疏水涂層耐酸堿性和熱穩(wěn)定性進(jìn)行了初步的研究。結(jié)果表明,制備的超疏水涂層具有很好的耐酸堿性和熱穩(wěn)定性?！居⑽恼縄nnature,manycreaturesexhibitfascinatingsurfacewettability.Asurfacewhosewatercontactangleisgreaterthan150°
4、iscommonlycalledasuperhydrophobicsurface.Infact,variousmethodsfortheprocessingofsuchsurfacesarebeinginvestigated.Theresearchprospectsaboutsuperhydrophobicsurfacescanbepotentiallyappliedinself-cleaningsurfaces,antireflectioncoatingsandmico-fluidicdevices
5、ect.However,thefabricationtechniquesforsuperhydrophobicsurfacesarenotonlycomplicatedbutalsoexpensive,limitingtheirpracticalapplications.Asaconsequence,itstillremainsagreatchallengetodevelopsimpleandconvenienttechniquesforthefabricationofsuperhydrophobic
6、surfaces.Themainresearchprogressesofthisthesisareshownasfollow:1.Therecentdevelopmentofthestudiesonsuperhydrophobicphenomenawhichexistedinthenaturewasreviewed.Thecurrentbiomimeticpreparationofthesuperhydrophobicsurfaces,thepropertiesofthesuperhydrophobi
7、csurfaces,andthepotentialapplicationsofthesuperhydrophobicsurfaceswerereviewedtoo.2.Inthepresentstudy,wepreparedperfectlysuperhydrophobiccoatingsonthecommonglasssubstratesbyasimplesolid-liquid-vapormethod.Thesuperhydrophobiccoatingswerecharacterizedbyco
8、ntactangle(CA),thermogravimetric-Differentialscanningcalorimetry(TG-DSC),Fouriertransforminfraredspectrometry(FT-IR)andfieldemissionscanningelectronmicroscope(FESEM).Theresultsshowedthatthesuperhydrophobiccoatingswereconsistedofe
