【作者】 陈银；

【导师】 王红卫；

【作者基本信息】 苏州大学 ， 材料学， 2008， 硕士

【摘要】 本课题提出并建立了常压辉光放电等离子(APGDP)发生装置。它采用平板金属电极结构,在频率0-40kv高压激励下,可在He/C7F16、He、He/丙酮气体中产生大面积、均匀稳定的辉光放电。并利用常压等离子体引发接枝技术,分别采用亲水性单体和疏水性单体对PE纤维进行了表面改性处理。本课题通过常压等离子体引发接枝技术,分别采用亲水性单体和疏水性单体对PE纤维进行了表面改性处理。通过对接枝不同单体后PE纤维表面单体接枝率的计算和表面接触角以及表面自由能的测量,系统的研究了常压等离子体引发接枝因素(放电电压、处理时间、接枝率等)对纤维接枝率、接触角和自由能的影响,并利用接触角测量仪、扫描电镜、红外光谱、核磁共振谱等仪器对接枝单体后纤维的表面的化学组成及表面结构进行了表征分析。通过常压等离子体引发亲水性和疏水性两种处理效果截然相反的单体在PE纤维表面的接枝,对常压等离子体引发亲水性单体和疏水性单体接枝聚合影响接枝效果的规律进行了分析和总结。更多还原

【Abstract】 An atmospheric-pressure glow discharge plasma reactor is brought forward and developed in this thesis. The glow discharge can be driven of 0-40kv supply. The electrodes are two parallel metal plates. Many kinds of working gasses such as He/ C7F16、He、He/acetone can be used. The measurement provide sufficient evidence to demonstrate that is a really stable and homogeneous glow discharge at atmospheric pressure.In this paper, the surface of PE fiber was modified by plasma-induced graft reaction. Treating effect, grafting principle of hydrophilic monomer and hydrophobic monomer grafting induced by plasma onto the PE fiber was studied.Through the related measurement of surface contact angle, grafting rate and surface tension of PE fiber, the involved treatment parameters were studied systematically including plasma power, treating time, monomer types etc. Moreover, IR, NMR and SEM were used to characterize the surface properties of the samples such as chemical composition and morphological structure.The paper summarized the principle and mechanism of hydrophilic monomer and hydrophobic monomer grafting induced by atmospheric-pressure glow discharge plasma.更多还原