新型炭材料2012，Vol.27Issue(6)：455-461,7.
炭纤维表面接枝碳纳米管对复合材料界面性能的影响
Effects of carbon nanotubes grafted on a carbon fiber surface on their interfacial properties with the matrix in composites
摘要
Abstract
Carbon fibers (CFs) were oxidized by concentrated HNO3 and then reacted with polyamidoamine dendrimers (PAMAM) with an average molecular weight of 157 to form CF-PAMAM. The CF-PAMAM was further reacted with oxidized carbon nanotubes (CNTs) to form CF-PAMAM-CNTs that were used as the reinforcement for epoxy resin-based composites. The functional groups and structure of the CF-PAMAM-CNTs were examined by XPS, SEM and AFM, and their wettability and the tensile strength were investigated by contact angle measurements and single strand extension respectively. The interfacial shear strength of the composites was measured by a micro-debonding method. Results showed that, compared with CFs, the surface roughness, surface energy and tensile strength of the CF-PAMAM-CNTs were increased by 180% , 300% and 22% , respectively when the CNT content was 15 mass% . The interfacial shear strength of the composite reinforced with CF-PAMAM-CNTs was increased by 178% for the same CNT content, which showed that the grafted nanotubes improved the interfacial properties of the filler with the matrix.关键词
炭纤维/碳纳米管/接枝/界面性能Key words
Carbon fiber/ Carbon nanotubes/ Grafting/ Interfacial properties.分类
化学化工引用本文复制引用
刘秀影,宋英,李存梅,王福平..炭纤维表面接枝碳纳米管对复合材料界面性能的影响[J].新型炭材料,2012,27(6):455-461,7.基金项目
611航空科研基金(200911). （200911）
