Superhydrophobic boron nitride nanotube stainless steel filter: Design and experimental analysis

DOI:	10.11809/bqzbgcxb2025.03.033
Keywords:	boron nitride nanotubes; filter cartridge; hydrophobicity removal performance; filtration ratio; average water content
Abstract:	The superhydrophobic boron nitride nanotube stainless steel mesh was prepared by using Fe powder as catalyst and B∶B2O3 =1∶4 as raw material. The superhydrophobic boron nitride nanotube stainless steel mesh was prepared by annealing at 1 250 ℃ in a tube furnace under NH3 atmosphere. The contact angle of water droplets on its surface is about 150° and the sliding angle is about 3°. The superhydrophobic boron nitride nanotube stainless steel filter material with a length of 80 mm and a width of 30 mm was used as the filter element substrate, and the pleated filter element was seamed by the adhesive lap method. The 9 pieces of boron nitride nanotube stainless steel filter substrate can design the required filter element inner skeleton coating, and the effective filtration area of the inner and outer skeletons is about 52 015 mm2.And the new filter element with superhydrophobic performance meets the design requirements. The Teflon filter material was used as the control group, and the new filter element with boron nitride nanotube stainless steel filter as the filter element coating was used for pollution detection and water separation detection. The pollution detection data showed that the filtration ratio of the new superhydrophobic filter element structure filter element was about 2 519, the filtration ratio of the Teflon filter element was about 256.4, and the filtration ratio of the new superhydrophobic filter element structure filter element was 90% of the sample. In the water purification experiment, the average water separation efficiency of the new superhydrophobic filter structure is about 29.33%, and the water separation efficiency of the Teflon filter is about 26.16%.
Issue:	Vol. 46 No. 3 (2025)
Published:	2025-03-31
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