纳米石墨薄片的制备、表征与应用  

Preparation and Characterization of Nanographite Sheets

作　　者：黄琨[1] 衣志勇[1] 郭静[1] 黄渝鸿[1] 范敬辉[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,绵阳621900

出　　处：《宇航材料工艺》2010年第5期47-51,共5页Aerospace Materials & Technology

基　　金：中国工程物理研究院重大基金资助项目(2007A03003)

摘　　要：为了获得适宜于同聚合物进行纳米复合的纳米石墨薄片(NGS),采用微波膨化制备膨胀石墨(EG),利用超声剥离与表面修饰获得NGS,并借助SEM、XRD、FTIR等分析其微观结构。结果表明:EG由许多厚100-300 nm的石墨薄片连接而成并形成网络结构,孔隙尺寸约几十纳米到几十微米;通过对EG的超声剥离可破坏其原有网络结构并将石墨晶片进一步剥离为大量30-60 nm厚的石墨薄片;石墨微波膨化与超声剥离过程中微观形貌的变化及其表面活性基团的引入,有利于进一步借助插层法实现聚合物与石墨的纳米复合。The expanded graphite was prepared through microwave expanding method and the nanographite sheets were prepared through ultrasonic treatment and decoration technology.The microstructure of expanded graphite and nanographite sheets were characterized by means of SEM,XRD and FTIR.Meanwhile,the application of nanographite sheets in EPDM/Graphite nanocomposites were introduced.The results showed that EG aremade from a lot of graphite sheets with 100 to 300 nm thickness and formed a kind of net structure.By means of ultrasonic treatment,graphite is exfoliated and became many nanographite sheets with 30 to 60 nm thickness,meanwhile,the active groups are led into the surface of nanographite sheets.The application effect of nanographite sheets in EPDM/Graphite nanocomposites are good.

关 键 词：膨胀石墨 超声剥离 纳米石墨薄片 

分 类 号：TB383[一般工业技术—材料科学与工程]