Preparation of melt-blown polypropylene electret air filter and its performance tailoring
In order to prepare the melt blown air filtration material with high performance,the structure and properties of the material are controlled by tailoring the electret master particle content,electret voltage,electret height,and electret speed during the preparation process.The surface morphology,fiber diameter and pore size of filtration materials are characterized.The effects of master particle content and electret process parameters on the filtration performance of melt-blown polypropylene electret air filters are studied.The results show that the air filtration efficiency of the materials is improved significantly with the addition of electret master batch.The surface potential difference and filtration efficiency of the material increase first and then decrease with the increase of the electret voltage and electret height,while the potential difference and filtration efficiency of the material surface decrease with the increase of the electret velocity.The filtration efficiency and pressure drop for PM2 5 of the prepared melt-blown electret air filter is 96.8％and 39 Pa,respectively,which shows an excellent air filtration performance.
melt-blown air filterelectret master batchpolypropylenecorona electretfiltration efficiencypressure drop
万方数据
维普
