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A kind of composite air filter material that can be washed repeatedly and preparation method thereof

A technology of air filter material and melt-blown filter material, which is applied in the field of industrial textiles, can solve the problems of increasing pressure drop and not being suitable for mass production, and achieves the effects of mild preparation conditions, improved filtration stability, and simple process

Active Publication Date: 2022-08-02
山东康乃尔材料科技有限公司
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Problems solved by technology

However, according to existing research, it is found that although the air filter material prepared by the conventional in-situ growth method can effectively improve the filtration efficiency, the pressure drop value will be greatly increased, and the reaction needs to be completed in an autoclave, which is not suitable for mass production.

Method used

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  • A kind of composite air filter material that can be washed repeatedly and preparation method thereof
  • A kind of composite air filter material that can be washed repeatedly and preparation method thereof
  • A kind of composite air filter material that can be washed repeatedly and preparation method thereof

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specific Embodiment

[0027] The technical problem to be solved by the present invention is to invent a preparation method of a composite air filter material that can be repeatedly washed with water.

[0028] Step 1. Dry polypropylene and polycarbonate polymer with a mass ratio of 97:3 in a blast drying oven, respectively. The melt index and melting point of polypropylene are 35g / 10min and 169°C, respectively. The melt index of polycarbonate is and the melting points are 14.4g / 10min and 250℃ respectively; after drying, the polycarbonate and polypropylene are uniformly mixed and granulated by a single screw granulator to prepare a two-component polypropylene / polycarbonate masterbatch;

[0029] Step 2. Dry the polypropylene / polycarbonate masterbatch obtained in step 1 with a blast drying oven; after the single-screw melt-blown equipment reaches the preset temperature and stabilizes, pour the polypropylene / polycarbonate masterbatch into the melt. The feeding barrel of the spray equipment, the molten p...

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Abstract

The invention discloses a repeatable water-washable composite air filter material and a preparation method thereof, belonging to the field of industrial textiles. Component polypropylene / polycarbonate mixed masterbatch; Step 2, blow the masterbatch obtained in step 1 into a polypropylene-polycarbonate melt-blown filter material (PPC); Step 3, zinc nitrate hexahydrate, 2- Methylimidazole and anhydrous methanol grow the zeolite imidazolate skeleton on the PPC obtained in step 2 by the in-situ growth method to obtain the polypropylene-polycarbonate / zeolite imidazolate skeleton melt-blown filter material (PPC / ZIF- 8); Step 4, prepare zeolite imidazolate skeleton (ZIF-8) nanocrystal with the mol ratio of 9.08: 72.35: 6292.13 by zinc nitrate hexahydrate, 2-methylimidazole and anhydrous methanol; Step 5, will contain ZIF The polyvinylidene fluoride spinning solution of ‑8 nanocrystals is compounded with the PPC / ZIF‑8 filter material prepared in step 3 to make a composite filter material (PPC / PVDF / ZIF‑8) that can be repeatedly washed with water. The PPC / PVDF / ZIF-8 air filter material prepared by the invention can effectively enhance the filtration efficiency under the premise of high efficiency and low resistance, and PM after encountering water 2.5 The filtration performance is stable.

Description

Technical field: [0001] The invention relates to the field of industrial textiles, in particular to a polypropylene-polycarbonate / polyvinylidene fluoride / zeolite imidazolate skeleton melt-blown electrospinning composite air filter material and a preparation method thereof, which are suitable for the air filtration industry. Background technique: [0002] In recent years, severe air pollution has seriously threatened human health, especially fine particles (PM) with aerodynamic diameters less than or equal to 2.5 μm in the air 2.5 ). At present, the efficient removal of PM 2.5 The air fiber filter media mainly include ordinary non-woven fiber filter media, ultra-fine glass fiber filter media, electrospinning fiber filter media and electret fiber filter media. Among them, the electret fiber filter material has been widely studied and applied because it can effectively improve the filtration efficiency without affecting the pressure drop value. However, although electret fib...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14D04H1/4382D04H1/728D04H3/005D04H3/02D04H13/00D01D5/00
CPCB01D39/14D04H1/4382D04H1/728D04H3/005D04H3/02D04H13/00D01D5/0084D01D5/003B01D2239/10
Inventor 李婷婷岑喜喜林佳弘楼静文张莹
Owner 山东康乃尔材料科技有限公司
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