Increasing in the heat resistance efficiency of filters using hydrophobic PVA/PEO/PTFE/SA nanofiber and PTFE nanoparticle composite

In this study, a conventional polytetrafluoroethylene (PTFE) foam-coated glass fabric filter (PG) was coated with a nanoparticle (NP)-decorated nanofiber (NF) filter to improve the surface and filtration performance and super water-repellent properties of the baghouse system used in industrial sites. Accordingly, a filter prepared by electrospinning PPPS and electrospraying PTFE NPs (PNP/PNF/PG filter) and a filter without PTFE NPs (PNF/PG filter) were manufactured using 0.005 L/m2 of the NF and a coated PTFE concentration of 0.002 L/m2. The samples were sintered at 320 °C, and a comparative analysis was performed on the samples. The surface of the PNP/PNF/PG filter had a higher surface roughness and contact angle than the PNF/PG filter, confirming that the hydrophobic surface characteristics of the existing PNF/PG filter were improved and maintained. Furthermore, based on the filter performance evaluation, the PNP/PNF/PG filter outperformed the PG and PNF/PG filters. In the particle range of 0.5 to 10.0 µm or more, the efficiency and QF were 98.79 % and 0.006. The PNP/PNF/PG filter improves filter performance while maintaining the surface characteristics of the PNF/PG filter.