芳纶
材料科学
环氧树脂
复合材料
粘附
凯夫拉
表面改性
抗剪强度(土壤)
等离子体
纤维
化学工程
环境科学
土壤科学
土壤水分
工程类
物理
量子力学
作者
G.S. Sheu,Shin Shing Shyu
标识
DOI:10.1016/0266-3538(94)90031-0
摘要
The surface of aramid (Kevlar 49) fibre was modified by NH3, O2 or H2O plasmas in order to improve the adhesion to epoxy resin. Electron spectroscopy for chemical analysis (ESCA) and static secondary ion mass spectroscopy (SSIMS) were used to identify the chemical compositions and functional groups of the plasma-treated fibre surface, respectively. The surface topography and mechanical properties of plasma-treated fibres were also investigated. After plasma treatments, the interfacial shear strength (IFSS) of aramid-fibre/epoxy-resin composites, as measured by the microbond pull-out technique, was markedly improved (43–83% improvement) and the fibre strength was only little affected (less than 10% loss). Significant improvement in the IFSS principally resulted from forming the covalent bonds between the newly reactive functionalities at the modified fibre surfaces and the epoxides of the resin.
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