纳米纤维膜覆膜针刺毡滤料制备方法及其性能研究

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Abstract Water-soluble polyvinyl alcohol nanofibers were utilized as the adhesive layer, and a steam atomization method was employed as a substitute for high-temperature treatment to fabricate PET/PPS nanofiber membrane composite filters through a circular roller stretching and pressing technique. The performance of the composite filters was characterized. The results indicated that the adhesion strength of the PET/PPS nanofiber membrane composite filter reached a maximum of 4.521N when the pressure was set at 0.436N/cm², the PVA spinning amount was 42.857mL/m², and the processing temperature during the pressurization was maintained at 20℃. The filtration efficiency for fine particulate matter with a diameter of 0.3μm achieved 98.86%. In dynamic filtration performance tests, after 30 cycles of constant pressure blowing, the time required for a single cycle was recorded as 13.5minutes, with a residual resistance of 265.4Pa, which outperformed existing PTFE-coated filter materials.

Key words： needle felt filter material electrospinning polyvinyl alcohol coating fastness filtration efficiency

Received: 06 July 2024

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X51

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	GUO Dian-ze
	GUO Ying-he
	HE Wei-dong
	LIU Jing-xian

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GUO Dian-ze,GUO Ying-he,HE Wei-dong等. Study on preparation and properties of nano-fiber membrane coated needle felt filter material[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(2): 693-703.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I2/693

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