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Effect of Environmental Condition on Electrical and Filtration Properties of Electrically Charged Fiber Composites  

Park, Seung-Keun (Department of Organic Materials and Textile System Engineering, Chungnam National University)
Joo, Chang-Whan (Department of Organic Materials and Textile System Engineering, Chungnam National University)
Publication Information
Textile Science and Engineering / v.47, no.2, 2010 , pp. 141-147 More about this Journal
Abstract
Recently electret filter media are extensively used to improve indoor air quality. However, they are significantly affected on environmental conditions such as humidity, temperature and chemical substance. This study reported the effect of humidity and temperature on the surface electric potential, filtration efficiency and pressure drop of electrically charged fiber (ECF) composites. The surface electric potential and filtration efficiency of ECF composites decreased rapidly, but pressure drop increased slightly with increasing relative humidity (RH) and temperature conditions. Effect of temperature change was more significant than RH change. Relationship between filter efficiency and surface electric potential relationship of ECF composites exhibited a quadratic function.
Keywords
electrically charged fiber(ECF) composite; electric potential; filtration efficiency; pressure drop; quality factor;
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