Exploration of PM_2.5 filtration property of filter bag for environment protection

Abstract

Abstract. In this paper, filter bag of polyphenylene sulfide (PPS) needle punched nonwoven for environment protection was investigated. The results showed that air permeability of sample was linear rise with the increase of the pressure drop. During the testing process, the residual pressure drop rose with the increase of cycles because of test dust attaching on the surface of the filter. The PM 2.5 filtration efficiency was obtained of 99.854%, which was smaller than the dust filtration efficiency of 99.971% because of the fine particles taking larger proportion of the dust through the sample. Results show that this method of evaluating the PM 2.5 filtration property is feasible.

Blend of Fibres to Improve the Mechanical Properties of Needle-Punched Nonwovens for PM2.5 Air Filtration

“…Fibre breakage during manufacturing weakens the overall structure, compromising the nonwoven's ability to resist bursting when exposed to increased pressure during air filtration. Polyester / Nylon / Kevlar structural effect and property [30] Polyester / Palm mechanical and ageing performances [31] polyester (HPET) / PP mechanical properties [5] polyester / Bamboo thermal resistance and the bursting strength [32] Recycled-PET / Kapok thermal resistance and air permeability [33] Polyester/viscose air permeability [34] Polyester/cotton scraps to wrap preserved fruit [35] PET / Areca building insulation applications [3] PLA/PP/Glass, PLA/PP/Hemp, PLA/Glass/Hemp, PP/Glass/ Hemp noise-control performance [36,37] PP/carbon electromagnetic shielding effectiveness [38] Carbon /Polypropylene mechanical Properties [39] PLA/TCF, PLA/flax, PLA/hemp, PP/TCF, PP/flax, PP/hemp mechanical property (Triumfetta cordifolia fibre (TCF)) [40] Jute / PP sound reduction, water absorbency, thermal resistance and air permeability [41][42][43] Kapok/PP Thermal Resistance [44] PP / Bamboo / PET, PP / Banana / PET, PP / Hemp / PET acoustic properties [45] PP / Nettle oil spill cleanup applications [2] Polyphenylene sulfide (PPS) PM2.5 filtration property, chemical resistance [46], [47] Polytetrafluoroethylene / PPS Air filtration property [48] Needle-punched nonwovens may have limitations in resistance to abrasion, which can be a concern in applications where the filter comes into contact with particulate matter or experiences friction [49]. Poor abrasion resistance can lead to the shedding of fibres, compromising the filter's efficiency and potentially https://doi.org/10.31881/TLR.2024.004…”