以国产芳纶1313为主要原料,通过合理的结构设计与工艺优化,填充一定比例的玻璃纤维,利用先进的无纺针刺工艺制作成毡,再经高温热定型、烧毛压光及耐酸处理等多种技术制作成产品。通过对其进行耐磨性、耐破性、耐酸性和过滤性能测试,研究发现,该复合滤料具有强耐酸性、过滤精度高、耐磨损、高性价比等特点。通过扫描电子显微镜观察发现,滤料表面形成一层聚四氟乙烯(PTFE)层,PTFE优良的抗化学性能和较低的摩擦系数大大改善了复合滤料的综合性能。
By using domestic aramid fiber 1313 and glass fiber as main raw materials,the composite needled felts were prepared by reasonable structure design,process optimization and advanced non-woven needle technology,of which the process included high temperature heat-setting,singeing,calendering,acid-resisting treatment,and so on.The wearability,bursting strength,acid-resistance and filtration performance were characterized;it is found that the compound filter materials have excellent acid-resistance,filtering precision,abrasion resistance and high performance-cost ratio.The scanning electron microscope(SEM) photos show that the surface of composite filters is coated with polytetrafluoroethylene(PTFE),improving chemical resistance and friction coefficient of filter materials.
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