Nano fiber coating layer super-hydrophobic self-cleaning air filter core and manufacturing method thereof

Abstract

The invention discloses a nano fiber coating layer super-hydrophobic self-cleaning air filter core and a manufacturing method thereof. The nano fiber coating layer super-hydrophobic self-cleaning air filter core comprises a micron filter core material substrate and a nano hydrophobic fiber non-woven thin film; the nano hydrophobic fiber non-woven thin film is formed by electrospinning a hydrophobic material; the micron filter core material substrate is formed through small molecule atmosphere fumigation of a chemically grafted hydrophobic material. The filter core with a double-layer material structure provides a super-hydrophobic and low-adhesion surface of a micro-nano structure, also ensures hydrophobicity of a lower-layer substrate paper fiber material, thereby achieving the super-hydrophobic surface properties with practical strength and durability on the paper fiber material substrate, ensuring good air permeability, and achieving high-efficiency self-cleaning and reuse of the filter core of air purification equipment.

Description

technical field [0001] The invention relates to the technical field of filter materials, and specifically discloses a nanofiber-coated superhydrophobic self-cleaning air filter element and a manufacturing method thereof. Background technique [0002] The air filter element is the core unit of the air purification equipment, and the filter material inside the filter element plays a decisive role in the air purification effect of the purification equipment. Generally, the filter material is required to have high filtration efficiency, small airflow resistance, high mechanical strength, good uniformity, and meet the performance characteristics of high temperature resistance, waterproof, and mildew resistance. [0003] Since the beginning of the 20th century, air filter materials have developed rapidly, from the initial natural fiber woven fabric filter materials, to glass fiber filter materials, to the rise of non-woven filter materials, and then to composite and special functi...

AI Technical Summary

Problems solved by technology

[0004] At present, most fiber-based air purification filter materials are made of micron fibers, and there are two huge technical challenges in the surface hydrophobization treatment: 1) The fiber materials are mostly micron-scale materials larger than 10 microns, while the size of more than 10 microns The surface microstructure cannot construct a low-adhesion superhydrophobic surface; 2) The requirement of porous structure for air permeability of the filter element material makes the surface modification process such as porous structure collapse, pore clogging, surface coating, solution immersion grafting, etc. cannot be applied on filter material

[0005] With the use and operation of air purification equipment, suspended particles in the indoor air are accumulated and attached to the filter material of the filter element. When the amount of dust accumulated on the filter material of the filter element reaches a certain value, the ventilation efficiency will decrease, or even completely impenetrable. Lost the function of the purifier itself

At present, the filter elements of most air purification equipment are disposable consumable parts, and the filter elements need to be replaced regularly

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