Microstructural characterization and capturing mechanisms in various PM2.5 air filter applications-based non-woven Polypropylene

• Main Authors: Yeh, Hui-Tzu, 葉蕙慈
• Other Authors: 黃爾文
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/y5pvt7

碩士 === 國立交通大學 === 材料科學與工程學系奈米科技碩博士班 === 106 === The aim of this research is to analyze the effect of microstructure characterization on different air filtration applications. Three kinds of PM2.5 filter specimens with electrostatic attraction, namely, N95 dust mask filter, melt-blown polypropylene (PP) filter, and 3M air filter were investigated with respect to their filtration performance, filter material characterization, and their filtration mechanism. The N95 dust mask has the highest filtration efficiency and the best removal performance on the nano-particles at the same air flow rate. The 3M air filter has the lowest filtration but the larger average fiber, the diameter and the porosity makes the lower average pressure loss and the overall filter membrane quality is optimal. To understand the mechanism of action of the electrostatic filter media, this study conducted a series of material property tests, including porosity analysis, high-resolution electron microscopy analysis, filtration efficiency, synchrotron X-ray microscopy analysis, filter surface electrostatic and contact angle analysis. At the same time, the analyzed results are integrated with the filtering theory mechanism to provide PM2.5 air pollution filter material process parameters and product development.