两种超细纤维复合空气过滤纸的结构与性能研究  

Study on the Structure and Properties of Two Kinds of Ultrafine Fiber Composite Air Filter Paper

作　　者：杨家喜[1] 梁云[1] 唐敏[1] 孙召霞[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2017年第2期8-14,18,共8页Paper Science & Technology

基　　金：国家科技支撑计划项目(2015BAE02B00);广东省科技计划项目(2013B010135003)

摘　　要：由于超细纤维可以显著提高过滤效率,在过滤材料中的应用得到越来越多的重视,但不同方法制备的超细纤维复合空气过滤材料在性能上存在着较大差异。本文主要对静电纺复合和造纸湿法复合这两种不同方法制备的超细纤维复合空气过滤纸进行结构与性能的研究。结果表明,两种不同方法制备的超细纤维复合空气过滤纸的初始过滤效率非常接近,静电纺复合滤纸的透气度为243mm/s,比造纸湿法复合滤纸的高近1倍;静电纺复合滤纸的容尘量为82g/m^2,造纸湿法复合滤纸的容尘量比其高14g/m^2;经过10次反吹清灰循环,静电纺复合滤纸的粉尘剥离率由91.6%降低为71.9%,造纸湿法复合滤纸的由67.4%降为38.8%,静电纺复合滤纸的反吹清灰性能比造纸湿法复合滤纸的更优异。Because uhrafine fiber can improve the filtration efficiency significantly, more and more attention has been paid to the applications of air filter media,however,there are tremendous differences in the performance of ul- trafine fiber composite filter medias prepared by different methods. The structure and properties of uhrafine fibercomposite air filter media, prepared by two different methods of electrospinning and wet - laid process, were stud- ied in this paper. The results show that the initial filtration efficiencies of the two filter media prepared by different methods are similar. The air permeability of electrospinning composite filter media is 243mm/s, which is almost 1 time higher than that of wet - laid composite filter media. The dust holding capacity of electrospinning composite fil- ter media is 82g/m2 and that of wet - laid composite filter media is 14g/m2 higher. After 10 back flow cleaning cy- cles, the dust stripping rate of electrospining composite filter media decreases from 91.6% to 71.9%, and that of wet - laid composite filter media decreases from 67.4% to 38.8%. The back flow cleaning performance of electro- spinning composite filter media is better than that of wet- laid composite filter media.

关 键 词：超细纤维 静电纺复合滤纸 造纸湿法复合滤纸 容尘量 反吹清灰 

分 类 号：TB332[一般工业技术—材料科学与工程]