纺织学报 ›› 2021, Vol. 42 ›› Issue (09): 52-58.doi: 10.13475/j.fzxb.20201101007

• 纤维材料 • 上一篇    下一篇

电晕驻极熔喷聚丙烯驻极体非织造布的电荷捕获特性

高猛, 王增元, 漏琦伟, 陈钢进()   

  1. 杭州电子科技大学 驻极体及其应用实验室, 浙江 杭州 310018
  • 收稿日期:2020-11-06 修回日期:2021-06-04 出版日期:2021-09-15 发布日期:2021-09-27
  • 通讯作者: 陈钢进
  • 作者简介:高猛(1995—),男,硕士生。主要研究方向为驻极体及其应用。

Characteristics of charge capture of melt-blown polypropylene electret nonwovens by corona charging

GAO Meng, WANG Zengyuan, LOU Qiwei, CHEN Gangjin()   

  1. Laboratory of Electret and Its Application, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China
  • Received:2020-11-06 Revised:2021-06-04 Published:2021-09-15 Online:2021-09-27
  • Contact: CHEN Gangjin

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摘要：

针对不同驻极条件下获得的熔喷聚丙烯驻极体非织造布的过滤性能存在差异,以及使用环境对其电荷存储稳定性的影响机制尚不清楚的问题,采用热刺激放电和表面电位分布测量技术,研究了驻极条件与材料电荷存储性能的相关性,考察了水和酒精熏蒸对材料的电荷存储稳定性的影响。结果表明:正、负电荷的陷阱能级相近,但正电晕驻极非织造布的过滤性能优于负电晕驻极;表面电位高低不能准确反映非织造布过滤性能的优劣;水熏蒸后非织造布的过滤效率变化很小,酒精熏蒸后其过滤效率衰减至与未驻极样品相同。该研究结果可为熔喷聚丙烯驻极体非织造布材料的生产及其在高湿度和医用环境下的使用提供参考。

关键词: 熔喷聚丙烯驻极体非织造布, 电晕驻极, 热刺激放电, 电荷稳定性

Abstract:

Aiming at the differences in the filtering performance of melt-blown polypropylene (MBPP) electret nonwovens obtained under different charging conditions and the applied environment influence on their charge storage stability, correlation between the charging conditions and the charge storage performance of the MBPP electret nonwovens was investigated based on the thermally stimulated discharge technology and measurement of surface potential distribution. The influence of water and alcohol fumigation on the charge storage stability was studied. The experimental results show that the energy levels of positive and negative charge trap are similar, but the filtering performance of the positive corona charging nonwoven is better than that of the negative corona charging. The surface potential values are not able to reflect accurately the quality of their filter performance. The filter efficiency of the nonwovens attenuates a little after water fumigation, and it attenuates a lot after alcohol fumigation, to the same the level as that without charging. This research provided a basis for the production and application of MBPP electret nonwovens under high humidity and medical environments.

Key words: melt-blown polypropylene electret nonwoven, corona charging, thermally stimulated discharging, charge stability

中图分类号: 

  • TQ31

表1

驻极条件参数表"

驻极距离/cm 驻极电压/kV 驻极温度/℃ 驻极时间/s
4~18 ±30 26 30
4 ±12~±30 26 30
4 ±30 26~110 30
4 ±30 26 10~60

图1

MBPP驻极体非织造布过滤效率与驻极条件的相关性"

图2

不同驻极电压下获得的MBPP驻极体非织造布的表面电位分布图"

图3

不同驻极电压下的MBPP驻极体非织造布的热刺激放电谱图"

图4

酒精和水熏蒸后MBPP驻极体非织造布的表面电位分布图"

图5

酒精和水熏蒸MBPP驻极体非织造布的热刺激放电谱图"

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[1] 陈钢进;肖慧明;王耀翔. 聚丙烯非织造布的驻极体电荷存储特性和稳定性[J]. 纺织学报, 2007, 28(9): 125-128.
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