本文選題：石墨烯　切入點：氧化石墨烯　出處：《南京郵電大學》2017年碩士論文　論文類型：學位論文

【摘要】：石墨烯是一種sp2雜化的二維蜂窩狀新型材料,在2004年由曼徹斯特大學的安德烈·海姆和康斯坦丁·諾沃肖洛夫采用機械剝離法成功制備。石墨烯只有一個碳原子的厚度,具有十分優(yōu)良的透光率,機械強度,導熱性和導電性。氧化石墨烯是石墨烯的氧化物及前驅(qū)體,通過對其性質(zhì)的研究,我們在原有的氧化石墨烯薄膜及其復合薄膜制備方法的基礎(chǔ)上設(shè)計了全新的制備方法,并研究其各項性能,提出新的應(yīng)用研究。為此,在本文中,首先,我們利用傳統(tǒng)的涂布及抽濾方法制備PVA與氧化石墨烯和磺酸化石墨烯復合薄膜,控制氧化石墨烯與磺酸化氧化石墨烯的比例,制備出不同的復合薄膜,并研究其力學性能,進一步的通過對薄膜進行還原,從而使得薄膜具備優(yōu)越的導電性,并具有優(yōu)秀的力學性能。隨后,我們針對一些小分子化合物設(shè)計了新的薄膜制備方法,浸涂成膠法,此方法來源于濕法紡絲的制備工藝。首先將玻璃基底浸潤到氧化石墨烯水分散液中,隨后將基底再浸潤到小分子化合物凝固液中,待凝固完畢烘干即成薄膜。此方法可以將小分子化合物結(jié)合到氧化石墨烯薄膜的片層之間,從而能夠控制其層間距,形成良好的電容結(jié)構(gòu),并且在水處理方面能夠有良好的應(yīng)用。最后,對之前制備的氧化石墨烯復合薄膜進行應(yīng)用研究,首先制備的薄膜經(jīng)過還原具有良好的導電性,其次在導熱性能方面也有突出的效果。傳統(tǒng)的石墨烯導熱膜都是由PI薄膜經(jīng)過1500℃的碳化及3000℃的石墨化過程制備的,這樣的方法成本高,能耗大。而我們提出的方法降低了成本及能耗,通過進行對比幾種高導熱石墨膜的導熱系數(shù),制備出了低成本高性能的導熱膜。
[Abstract]:Graphene, a new two-dimensional honeycomb material hybrid by sp2, was successfully prepared in 2004 by Andre Heym and Constantine Novosholov at the University of Manchester by mechanical stripping. Graphene is only the thickness of a carbon atom. Graphene oxide is the oxide and precursor of graphene. We have designed a new preparation method on the basis of the original graphene oxide thin film and its composite thin film, studied its properties and put forward new application research. PVA / graphene oxide and graphene sulfonate composite films were prepared by traditional coating and filtration methods. Different composite films were prepared by controlling the ratio of graphene oxide to graphene sulfonic oxide, and their mechanical properties were studied. The film was further reduced to make the film have excellent electrical conductivity and excellent mechanical properties. Subsequently, we designed a new method for the preparation of thin films for some small molecular compounds. This method is derived from the wet spinning process. The glass substrate is first infiltrated into the graphene oxide aqueous dispersion, and then the substrate is re-infiltrated into the solidification solution of small molecular compounds. This method can combine small molecular compounds between the layers of graphene oxide film, so that the spacing between layers can be controlled, and a good capacitance structure can be formed. And can be used in water treatment. Finally, the graphene oxide composite thin films prepared before the application study, the first thin film after reduction has a good conductivity, The traditional graphene films were prepared from Pi films by carbonization at 1500 鈩，

本文編號：1584100