期刊
ADVANCED COMPOSITE MATERIALS
卷 20, 期 4, 页码 337-360出版社
TAYLOR & FRANCIS LTD
DOI: 10.1163/092430410X550881
关键词
Carbon nanotube; dispersion; interfacial shear strength; electrical resistance; electro-micromechanical test
资金
- Defense Acquisition Program Administration
- Agency for Defense Development (ADD) [UD070009AD]
- BK21 program
Studies of dispersion and related properties, in carbon nanotube/epoxy composites, were conducted using electro-micromechanical and wettability tests. Specimens were prepared from neat epoxy as well as composites with untreated and acid-treated carbon nanotube (CNT). The degree of dispersion and its standard deviation were evaluated by turbidity of the dispersing solution, as well as by volumetric electrical resistivity. Acetone was a better dispersing solvent than purified water and various acid treatments of the CNT also enhanced dispersion. Contact resistivity responded differently with dispersion degree. The apparent Young's modulus was higher for composites with acid treated CNT. The interfacial shear strength between a single carbon fiber and CNT/epoxy was lower than that between a single carbon fiber and neat epoxy. This difference is attributed to increased viscosity and decreased bonding availability in the matrix due to the added CNT. The optimum CNT treatment, for maximizing interfacial adhesion while maintaining good electrical conductivity was the sulfuric acid treatment. The CNT composites can also sense micro-damage in terms of the stepwise increments of electrical resistivity combined with acoustic emission. (C) Koninklijke Brill NV, Leiden, 2011
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据