本文選題：聚四氟乙烯薄膜 + 電子束蒸發(fā)法��； 參考：《南京理工大學(xué)》2014年碩士論文

【摘要】：潤(rùn)濕是自然界和人類生活中的共同界面現(xiàn)象,是一種固體表面性質(zhì)。近年來,疏水和超疏水材料由于其潛在的功能性應(yīng)用而受到了國(guó)內(nèi)外研究者的極大關(guān)注。目前,制備超疏水表面多采用濕法工藝,但由于聚四氟乙烯(PTFE)幾乎不溶于所有試劑,并不適用于濕法工藝。本文采用低功率電子束蒸發(fā)法制備PTFE疏水薄膜,主要研究?jī)?nèi)容如下： 采用低功率電子束法在陶瓷片基底上沉積PTFE薄膜,研究制備工藝、基底性質(zhì)對(duì)PTFE薄膜形貌、潤(rùn)濕性能的影響。結(jié)果表明,所制備的薄膜表面均呈疏水性,硫酸濃度、刻蝕時(shí)間、沉積時(shí)間對(duì)薄膜的表面形貌、粗糙度、疏水性均產(chǎn)生顯著影響； 在陶瓷片和載玻片上沉積PTFE薄膜并計(jì)算基底表面能。發(fā)現(xiàn)基底表面粗糙度和表面能同時(shí)影響薄膜的表面潤(rùn)濕性,但表面能的作用比粗糙度更明顯。 通過改變制備條件,在經(jīng)草酸刻蝕過的Cu片基底上成功制備出超疏水PTFE薄膜,且薄膜表面最大接觸角達(dá)到153.34°,滾動(dòng)角幾乎為0°,具有優(yōu)異的超疏水效果。通過分析,進(jìn)一步說明低表面能物質(zhì)的修飾是基底表面呈現(xiàn)超疏水性的主要原因 以磁控濺射法制備的Cu膜為基底,分別經(jīng)退火或H202溶液處理后制備Cu/PTFE復(fù)合膜,研究工藝條件對(duì)復(fù)合膜表面形貌、粗糙度及疏水性的影響。結(jié)果發(fā)現(xiàn),H202處理過的Cu膜表面形成納米棒結(jié)構(gòu),且粗糙度較大；在該基底上沉積PTFE薄膜,測(cè)得Cu/PTFE復(fù)合膜表面接觸角最大達(dá)到155.17°,滾動(dòng)角為2°,顯示出優(yōu)良的超疏水性。 采用電子束蒸發(fā)法在Cu片上沉積聚乙烯(PE)/PTFE復(fù)合膜,研究過渡層PE的厚度對(duì)復(fù)合膜表面粘附性及疏水性的影響。結(jié)果表明,經(jīng)草酸刻蝕過的Cu片上復(fù)合膜的疏水性比未刻蝕的好；同時(shí),粘附力與接觸角呈負(fù)相關(guān),粘附力越小,其接觸角越大,表面疏水性越好。說明一定厚度的PE過渡層能明顯降低薄膜表面粘附力,增強(qiáng)疏水性。
[Abstract]:Wetting is a common interfacial phenomenon in nature and human life, and it is a solid surface property. In recent years, hydrophobic and superhydrophobic materials have attracted great attention from researchers at home and abroad for their potential functional applications. At present, superhydrophobic surfaces are prepared by wet process, but PTFEs are insoluble in almost all reagents, so they are not suitable for wet process. In this paper, PTFE hydrophobic thin films were prepared by low power electron beam evaporation. The main research contents are as follows: PTFE thin films were deposited on ceramic substrates by low power electron beam method. The effects of substrate properties on the morphology and wettability of PTFE thin films were studied. The results showed that the surface of the films were hydrophobic, and the concentration of sulfuric acid, etching time and deposition time had a significant effect on the surface morphology, roughness and hydrophobicity of the films. PTFE thin films were deposited on ceramic and glass slides and the surface energy of substrates was calculated. It is found that the surface wettability of the films is affected by both the surface roughness and the surface energy, but the effect of the surface energy is more obvious than the roughness. Superhydrophobic PTFE thin films were successfully prepared on Cu substrates etched by oxalic acid by changing the preparation conditions. The maximum contact angle and rolling angle of the films were 153.34 擄and 0 擄respectively, which showed excellent superhydrophobic effect. It is further proved that the modification of low surface energy substances is the main reason for the superhydrophobicity of the substrate surface. The surface morphology, roughness and hydrophobicity of Cu/PTFE composite films were investigated by annealing or H202 solution treatment on Cu films prepared by magnetron sputtering. The results show that nanorod structure is formed on the surface of Cu film treated with H202, and the surface roughness of PTFE film is large, and the surface contact angle of Cu/PTFE composite film is 155.17 擄and the rolling angle is 2 擄, which shows excellent superhydrophobicity. PEN / PTFE composite films were deposited on Cu substrates by electron beam evaporation. The effect of the thickness of the transition layer PE on the surface adhesion and hydrophobicity of the composite films was studied. The results show that the hydrophobicity of Cu composite film etched by oxalic acid is better than that of unetched Cu, and the adhesion force is negatively related to the contact angle, the smaller the adhesion force is, the greater the contact angle is, and the better the surface hydrophobicity is. The results show that a certain thickness of PE transition layer can obviously reduce the surface adhesion of the film and enhance the hydrophobicity.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB383.2

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