一种连续聚四氟乙烯泡沫涂层玻璃纤维毡,具有优异的自洁,抗静电和高过滤效率的性能

IF 2.2 4区 工程技术 Q1 MATERIALS SCIENCE, TEXTILES Journal of Industrial Textiles Pub Date : 2023-01-01 DOI:10.1177/15280837231188965
Miaomiao Chen, Qi Chen, Yongchun Zeng, Hong Wang
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引用次数: 0

摘要

空气污染已成为一个重大的全球环境问题,导致不良的健康影响和呼吸道疾病。为了应对这一挑战,膨胀聚四氟乙烯(ePTFE)膜基纤维过滤器在过去十年中越来越受欢迎。然而,ePTFE膜的薄和低机械强度使其容易受到颗粒碰撞的损坏。作为ePTFE膜的替代品,PTFE乳液已成为提高过滤效率的一种有前途的方法。然而,由于PTFE的低表面能和高结晶度,PTFE很难自结合到膜中并粘附到基底上。因此,PTFE浸渍过滤材料的过滤效率不符合超低排放的要求,耐磨性差,使用寿命短。在此,我们制作了一种聚四氟乙烯乳液泡沫涂层膜过滤器。分析了PVA含量对薄膜形态、透气性、孔径和分布、耐磨性和抗静电性能的影响。模拟了自清洁性能,并对其过滤性能进行了测试。值得注意的是,PTFE乳液泡沫涂层膜过滤器的摩擦质量损失指数为0.07。经过30次循环,过滤效率为98.93%,剥离率为91.03%。我们设计的PTFE乳液泡沫涂层具有优异的自清洁、抗静电和高过滤效率性能,为PTFE乳液在过滤领域的应用提供了新的方向。
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A continuous polytetrafluoroethylene foam-coating to glass fiber mat with superior self-cleaning, antistatic and high filtration efficiency performances
Air pollution has become a significant global environmental issue, leading to adverse health effects and respiratory diseases. To address this challenge, expanded polytetrafluoroethylene (ePTFE) membrane-based fibrous filters have gained popularity in the past decade. However, the thinness and low mechanical strength of ePTFE membranes make them susceptible to damage from particle collisions. As an alternative to ePTFE membranes, PTFE emulsion has emerged as a promising approach to enhance filtration efficiency. However, due to PTFE's low surface energy and high crystallinity, it is difficult for PTFE to self-bond into a membranes and adhere to substrates. Therefore, the filtration efficiency of PTFE-impregnated filter materials does not meet the requirements for ultra-low emissions, and they have poor wear resistance, resulting in a short service life. Herein, we fabricate a PTFE emulsion foam-coating membrane filter. The influences of the contents of PVA on the film morphology, air permeability, pore size and distribution, abrasive resistance and antistatic properties were analyzed. The self-cleaning performance was simulated and the filtration performance was measured as well. Notably, the frictional mass loss index of the PTFE emulsion foam-coating membrane filter was 0.07. After 30 cycles, the filtration efficiency was 98.93%, and the strip ratio was 91.03%. Our design of the PTFE emulsion foam-coating provided a new direction for the application of PTFE emulsion in the filtration field with superior self-cleaning, antistatic and high filtration efficiency performances.
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来源期刊
Journal of Industrial Textiles
Journal of Industrial Textiles MATERIALS SCIENCE, TEXTILES-
CiteScore
5.30
自引率
18.80%
发文量
165
审稿时长
2.3 months
期刊介绍: The Journal of Industrial Textiles is the only peer reviewed journal devoted exclusively to technology, processing, methodology, modelling and applications in technical textiles, nonwovens, coated and laminated fabrics, textile composites and nanofibers.
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