防护口罩用非织造滤料的制备技术与研究现状

为深入了解防护口罩用非织造滤料的研究现状,分别介绍了纺粘非织造滤料、针刺非织造滤料和熔喷非织造滤料的应用基础与制备技术。归纳了电晕驻极技术、水驻极技术和热空气驻极技术的原理与特点,针对性地阐述了三类非织造过滤材料和驻极处理技术的国内外最新研究进展。分析了聚合物改性技术、驻极处理技术对非织造滤料过滤性能的影响。认为防护口罩用非织造滤料及其制备技术未来的研究方向是聚合物的改性技术、新材料的高速成网技术和驻极处理技术,并需完善相应的评价标准体系。

Preparation technology and research status of nonwoven filtration materials for individual protective masks

In order to gain a deeper understanding of the current research status of the nonwoven filtration materials for protective masks, this paper introduced the application foundation and processing technologies of several nonwoven filtration materials, including spunbond nonwovens, needle punched nonwovens and melt blown nonwovens. The mechanisms and performances of corona charging, hydro charging and air charging were introduced. In particular, three types of nonwoven filtration materials mentioned above were elaborated together with the latest global research progress of electret technology. The influence of polymer modification technology and electret treatment technology on filtration performance of the nonwoven materials were further analyzed respectively. The review indicates that polymer modification technology, high-speed preparation technology of new materials and electret treatment technology are regarded as the research directions of nonwoven filtration materials for protective masks and its preparation technology in the future, and the evaluation standard system should be improved accordingly.