芳纶针刺毡在高温下的孔径分布变化  

Pore size distribution changes of aramid needle-punched felt in hight temperature

作　　者：刘造芳 张得昆[1] 张星[1] LIU Zaofang ZHANG Dekun ZHANG Xing(School of Textile and Materials, Xilan Polytechnic University, Xi＇an 710048, China)

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048

出　　处：《西安工程大学学报》2017年第3期315-321,共7页Journal of Xi’an Polytechnic University

基　　金：陕西省产业用纺织品科研资助项目(20152X-24)

摘　　要：为探究芳纶针刺毡在不同温度下孔径的大小及分布变化情况,以100%芳纶1313纤维为原料,通过非织造针刺工艺,制备了5种不同针刺密度的针刺毡,对其进行高温处理(100℃,150℃,200℃,250℃),处理时间为60min,并进行测试.结果表明,随着针刺密度增加,针刺毡的孔径分布越来越集中、均匀,当针刺密度为350刺/cm^2时,孔径最小,分布最集中.当处理温度在200℃以下,5种芳纶针刺毡孔径分布集中,透气率、孔径大小及分布变化不大;当温度升高到250℃时,芳纶针刺毡的孔径分布显著分散,孔径增大,透气率增大,说明内部结构被破坏,其过滤性能显著下降.In order to investigate pore size’s distribution and change of aramid needle-punched felt with different needle-punched densities at different temperatures, using 100% aramid 1313 fiber as raw material, aramid 1313 needle felts with five kinds of needle-punched densities were prepared by nonwoven acupuncture process. And the samples were treated at high temperature（100 ℃,150 ℃,200 ℃,250 ℃,treating time was 60 minutes）and then tested. The results show that with the increase of the needle-punched density, the pore size distribution becomes more and more concentrated and uniform. When the needle-punched density is 350 strokes/cm2, the pore size is the smallest,and the distribution is the most concentrated and the filtration effect is the best. Below 200 ℃, with the increase of temperature, the pore size distribution is highlyconcentrated, but the air permeability, pore size and distribution change little. When the treating temperature rises to 250 ℃, the distribution is significantly dispersed, the pore size and the air permeability increases, which shows that the internal structure is damaged, and then the filter performance reduces obviously.

关 键 词：芳纶1313纤维 针刺毡 孔径分布 

分 类 号：TS156[轻工技术与工程—纺织材料与纺织品设计]