【作者】 徐志成；

【导师】 邓新华；

【作者基本信息】 天津工业大学 ， 材料学， 2007， 硕士

【摘要】 聚乙烯(Polyethylene，PE)是一种具有优良的耐腐蚀性等诸多优异性能塑料，目前已成为世界特种工程塑料的最大品种之一，开发前景十分广阔，但PE也有其缺点，例如亲水性较差，本课题致力于对PE非织物的磺化改性的研究。主要工作内容有：本实验首先采用氯磺酸进行磺化反应以改善聚乙烯(PE)非织物的亲水性。通过对接触角、SEM扫描电镜、能谱(X射线电子探针纤维表面元素分析)、拉伸性能、含水率、交换容量、耐碱性能等一系列性能测试，讨论了时间、温度等不同反应条件对PE亲水性的影响。还对各种磺化条件的最佳工艺条件进行了探讨，实验结果表明，在反应温度为80℃，反应时间为1.5 h，PE非织物的质量m(g)与氯磺酸的体积V(mL)比为5：1的磺化反应条件下，不仅PE非织物的亲水性得到了显著的改善，同时还获得了较好的力学性能与较高的磺化率。本文还利用磺化后聚乙烯作为碱水电解槽制氧装置质子隔膜进行了尝试研究。由于时间仓促，仅对电解槽两极板间电压进行实验，结果表明磺化时间以及实验中磺化剂的用量都是控制电解槽两极板间电压的主要因素。更多还原

【Abstract】 Polyethylene (PE) is a new and special engineering material which has a lot of excellent properties such as: high temperature resistant (resisting quality) and concentrated base resistant. It has been one of the most popular special engineering materials in the world and will have a bright future. But PE has its own defects, for example the bad property of hydrophilic. So in this paper we focus on the research of modification of property of PE nonwoven web by sulfonation.First, the hydrophilic property of PE nonwoven web was improved by sulfonation with Chlorosulfonic Acid . Contact angle,SEM,EDX, the electronically strength analysis apparatus of fabric, moisture content, exchange capacity and the property of concentrated base resistant testing have been used to characterize the properties of the sulfonated PE and the effect of time,temperature and the ratio of reactants on the hydrophilic property of PE are illustrated in detail. The optimal conditions of the polyethylene nonwoven web surface sulfonation have been discussed .The result shows that not only the hydrophilic property of PE nonwoven n of PE nonwoven web are obtained at 80 ℃, 1.5 h , the rate about the quantity of PE nonwoven web and the volume of Chlorosulfonic Acid is 5:1.Second,theweb is excellently improved but also good stretch intensity and higher rate of sulfonatio sulfonated PE nonwoven web has been studied as ion-exchange membrane of electrolyzer. Because of the time limit,we investigated the bipolar plate voltage of electrolyzer only.The result shows that the time and the dose of sulfonating agent are key factors of controlling the bipolar plate voltage of electrolyzer.更多还原