聚酰亚胺/聚四氟乙烯复合滤料的发泡涂层性能

四氟

聚酰亚胺/聚四氟乙烯复合滤料的发泡涂层性能
蔡伟龙[1] 郑玉婴[2] 肖向荣[3][1]厦门三维丝环保股份有限公司,福建厦门361101 [2]福州大学材料科学与工程学院,福建福州350108 [3]福建龙净环保股份有限公司,福建龙岩364000

摘　要:以聚四氟乙烯乳液为涂层剂主要原料,采用泡沫涂层法对聚酰亚胺（P84）纤维/聚四氟乙烯（PTFE）纤维复合滤料进行表面涂层处理,研究了涂层对复合滤料的结构及性能的影响。X射线衍射和扫描电子显微镜分析结果表明,经涂层处理后,P84/PTFE复合滤料表面形成一层致密多孔的聚四氟乙烯涂层。差示扫描量热分析和热失重分析结果表明,复合滤料经涂层处理后仍保持原有良好的热稳定性。对复合滤料的热收缩性和耐化学性研究表明,涂层处理明显改善了复合滤料在高温下的尺寸稳定性,同时也提高了其耐酸、耐碱性能。[著者文摘]

关键词:聚四氟乙烯 聚酰亚胺 复合滤料 涂层
分类号:　TS176.5[著者标引]文献标识码：A文章编号：0253-9721（2011）04-0029-04栏目信息：纤维材料
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Properties of foam coated surface of polyimide/PTFE composite filtering materialCAI Weilong,ZHENG Yuying,XIAO Xiangrong1.Xiamen Savings Environmental Co.,Ltd.,Xiamen,Fujian 361101,China;2.College of Materials Science and Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;3.Fujian Longking Environmental Co.,Ltd.,Longyan,Fujian 364000,ChinaAbstract:The surface foam coating of polyimide（P84）fiber/polytetrafluoroethylene（PTFE） fiber composite filtering material was conducted with PTFE emulsion,and the effect of coating on the structure and properties of composite filtering material was studied.X-ray diffraction and scanning electron microscopy analysis showed that a lay of compact and porous coating of PTFE formed on the surface of the material after coating treatment.The results of differential scanning calorimetry and thermogravimetry indicated that P84/PTFE filtering material after coating still kept its good thermal stability.The research of thermal shrinkage and chemical resistance properties of the coated P84/PTFE composite filtering material proved that its dimensional stability under high temperature and resistance to acid and alkali were improved.[著者文摘]

Key words: PTFE; polyimide; composite filtering material; coating