氨气等离子体改性处理芳纶Ⅲ表面的研究  

Surface modification of aramid fiber Ⅲ by ammonia plasma treatment

作　　者：李爽[1] 曹谦芝[1] 韩克清[1] 张玥[1] 余木火[1] 

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维工业》2014年第6期11-14,共4页China Synthetic Fiber Industry

基　　金：国家重点基础研究发展规划项目资助(2011CB606101)

摘　　要：以氨气为反应气体,对芳纶Ⅲ进行等离子体表面改性处理,研究了等离子体处理时间和处理功率对纤维表面性能的影响;采用X射线光电子能谱、场发射扫描电镜、接触角和微脱粘实验等测试方法对改性前后纤维表面元素组成、形貌、润湿能力以及界面粘结强度进行表征。结果表明:芳纶Ⅲ经过氨气等离子体改性后,表面含氮极性基团的含量增加,粗糙程度增大,润湿能力得到明显的改善;当氨气等离子体处理时间为15 min,功率为100 W时,芳纶Ⅲ与环氧树脂的界面粘结强度从处理前的12.9 MPa提高到18.2 MPa,与水的接触角由处理前的71.4°下降到46.8°。Aramid fiber Ⅲ was subjected to plasma surface modification using ammonia as reactive gas.The effects of plasma treatment time and power on the surface properties of the fiber were studied.The surface elemental composition,morphology,wettability and interfacial bond strength of the fiber were characterized before and after modification by X-ray photoelectron spectroscopy,field emission scanning electron microscopy,contact angle and micro-debonding test.The results showed that the content of nitrogen-containing polar groups increased on the surface of aramid fiber Ⅲ,the surface roughness rose and the wettability were obviously enhanced after ammonia plasma treatement; the interfacial bond strength of aramid fiber Ⅲ with epoxy resin rose to 18.2 MPa from 12.9 MPa and the contact angle with water dropped to 46.8° from 71.4° when the ammonia plasma treatment time and power were 15 min and 100 W,respectively.

关 键 词：芳纶Ⅲ 氨气等离子体 表面改性 界面粘结强度 接触角 

分 类 号：TQ342.72[化学工程—化纤工业]