芳纶纳米纤维改性聚四氟乙烯/聚苯硫醚针刺毡的制备及其性能

doi:10.13475/j.fzxb.20201103205

纺织学报 ›› 2021, Vol. 42 ›› Issue (10): 47-52.doi: 10.13475/j.fzxb.20201103205

芳纶纳米纤维改性聚四氟乙烯/聚苯硫醚针刺毡的制备及其性能

刘强飞¹^,²^,³, 吴韶华¹^,², 杨吉震¹^,²^,³, 周蓉¹^,²^,³(), 董湘琳⁴, 宋传波⁴, 沈照旭⁴

1.青岛大学纺织服装学院, 山东青岛 266071
2.青岛大学非织造材料与产业用纺织品创新研究院,山东青岛 266071
3.山东省特型非织造材料工程研究中心, 山东青岛 266071
4.山东省兴国新力环保科技股份有限公司, 山东淄博 255000

收稿日期:2020-11-13 修回日期:2021-06-05 出版日期:2021-10-15 发布日期:2021-10-29
通讯作者: 周蓉
作者简介:刘强飞(1995—),男,硕士生。主要研究方向为高温过滤材料。

Preparation and properties of polytetrafluoroethylene/phenylene sulfide needled felt modified by aramid nanofiber

LIU Qiangfei¹^,²^,³, WU Shaohua¹^,², YANG Jizhen¹^,²^,³, ZHOU Rong¹^,²^,³(), DONG Xianglin⁴, SONG Chuanbo⁴, SHEN Zhaoxu⁴

1. College of Textile & Clothing, Qingdao University, Qingdao, Shandong 266071, China
2. Industrial Research Institute of Nonwovens & Technical Textiles, Qingdao University, Qingdao, Shandong 266071, China
3. Shangdong Center for Engineered Nonwovens, Qingdao, Shandong 266071, China
3. Shandong Xingguo Xinli Environmental Protection Co.,Ltd., Zibo, Shandong 255000, China

Received:2020-11-13 Revised:2021-06-05 Published:2021-10-15 Online:2021-10-29
Contact: ZHOU Rong

摘要/Abstract

摘要：

为提高耐高温聚四氟乙烯/聚苯硫醚(PTFE/PPS)针刺毡的过滤效率,在其表面涂覆了不同质量分数的芳纶纳米纤维(ANF)分散液得到PTFE/PPS/ANF复合针刺毡,对其微观形貌、元素组成、热稳定性、力学性能、孔径分布、透气性以及过滤性能进行研究。结果表明:芳纶纳米纤维分散液成功引入到PTFE/PPS针刺毡表面后在针刺毡内部呈现微纳结构,其对针刺毡的热稳定性和力学性能几乎没有影响;PTFE/PPS/ANF复合针刺毡对不同粒径的颗粒物过滤效率明显提高,尤其是对于粒径为1.25 μm颗粒物的过滤效率提高了37.9%,阻力仅有较少增加,针刺毡表面的纳米纤维膜在过滤过程中发挥了主要的过滤作用,基本实现了高效低阻效果。

关键词: 芳纶纳米纤维分散液, 针刺毡, 膜效应, 高效低阻, 过滤效率, 聚四氟乙烯, 聚苯硫醚

Abstract:

Novel aramid nanofiber dispersion with different mass fractions was utilized to coat and process traditional high temperature polytetrafluoroethylene/phenylene(PTFE/PPS) needle-punched filter felts to improve their filtration efficiency. The micro-structure, element composition, thermalstability, mechanical properties, pore size distribution, air permeability as well as filtration properties of as-prepared composite filter materials (PTFE/PPS/ANF) were systemically explored and investigated. The results showed that the as-processed needle-punched felts exhibit a micro-nano structure when the aramid nanofiber dispersion was poured onto the needle-punched felts. It was found that the thermal stability and mechanical properties of as-obtained micro-nano composite felts were comparable to the untreated needle-punched felts. Most importantly, the micro-nano composite felts PTFE/PPS/ANF presented obviously enhanced filtration efficiency but slightly increased filtration resistance in comparison with the untreated felts. For instance, the filtration efficiency of the micro-nano composite felts is increased by 37.9% when the particulate maters with the diameter of 1.25 μm were utilized for filtration test. This study demonstrated that the nano-micro structure of composite felts played a major role in the improvement of filtration efficiency, and novel high temperature filter felts with high efficiency and low resistance were successfully achieved.

Key words: aramid nanofibers dispersion, needle-punched filter felt, membrane effect, high filtering efficiency and low filtering resistance, filtration efficiency, polyterafluoroethylene, phenylene sulfide

中图分类号:

TS174

刘强飞, 吴韶华, 杨吉震, 周蓉, 董湘琳, 宋传波, 沈照旭. 芳纶纳米纤维改性聚四氟乙烯/聚苯硫醚针刺毡的制备及其性能[J]. 纺织学报, 2021, 42(10): 47-52.

LIU Qiangfei, WU Shaohua, YANG Jizhen, ZHOU Rong, DONG Xianglin, SONG Chuanbo, SHEN Zhaoxu. Preparation and properties of polytetrafluoroethylene/phenylene sulfide needled felt modified by aramid nanofiber[J]. Journal of Textile Research, 2021, 42(10): 47-52.

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样品编号	弹性模量/MPa	拉伸应变/%	拉伸强度/MPa
M1	69.06±7	43.85±6.0	11.41±1.2
M2	67.15±4.0	42.15±4	11.52±1.5
M3	53.09±5	45.48±3.5	12.36±1.4
M4	51.77±8	38.17±4.8	14.66±2.1

芳纶纳米纤维改性聚四氟乙烯/聚苯硫醚针刺毡的制备及其性能

Preparation and properties of polytetrafluoroethylene/phenylene sulfide needled felt modified by aramid nanofiber

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