Multi-Scale Microstructure Investigation for a PM 2.5 Air-Filter Efficiency Study of Non-Woven Polypropylene

Tu-Ngoc Lam; Chen-Hsien Wu; Sheng-Hsiu Huang; Wen-Ching Ko; Yu-Lih Huang; Chia-Yin Ma; Chun-Chieh Wang; E-Wen Huang

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Multi-Scale Microstructure Investigation for a PM 2.5 Air-Filter Efficiency Study of Non-Woven Polypropylene

机译：非织造聚丙烯PM 2.5空气过滤效率研究的多尺度微观结构研究

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A N95 face-piece respirator and a 3M air filter composed of non-woven polypropylene filter material were investigated for their multi-scale microstructure and resulting filtration performance. Filtration mechanisms of each system are found and quantified. Both media showed a gradually decrease of the most penetrating particle size with respect to an increase in face velocity or surface charge density. Increasing the face velocity and porosity dramatically degraded the collection efficiency in the 3M filter rather than in the N95 system. We exploited three-dimensional X-ray tomography to characterize the morphological and geometrical properties of the fiber arrangement and deposition of aerosol on the fiber surface. Tuning the most predominant material parameters to achieve a precedence in lower pressure drop or higher collection efficiency in a specifically captured particle size range is of great requisite to a peculiar application of the filter media.

机译：研究了N95面部呼吸器和由非织造聚丙烯过滤器材料组成的3M空气过滤器，用于其多尺度微观结构并得到过滤性能。发现和量化每个系统的过滤机制。两种介质表明，相对于面速度或表面电荷密度的增加，逐渐降低最渗透的粒度。增加面部速度和孔隙度显着降低了3M过滤器中的收集效率而不是N95系统。我们利用了三维X射线断层扫描，以表征纤维布置的形态学和几何特性和气溶胶在纤维表面上的沉积。调整最主要的材料参数，以在特定捕获的粒度范围内实现更低的压降或更高的收集效率，这是过滤介质的特殊应用的绝佳。

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《Quantum Beam Science》 |2019年第4期|共10页
作者
Tu-Ngoc Lam; Chen-Hsien Wu; Sheng-Hsiu Huang; Wen-Ching Ko; Yu-Lih Huang; Chia-Yin Ma; Chun-Chieh Wang; E-Wen Huang;
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中图分类物理学;
关键词
fibrous filterelectret filteraerosolporosityX-ray tomography;

机译：纤维滤波器滤过滤射射线射线断层扫描;

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Multi-Scale Microstructure Investigation for a PM 2.5 Air-Filter Efficiency Study of Non-Woven Polypropylene

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