High-performance electrospinning/electret composite fiber filtering material and preparation method thereof

Abstract

The invention discloses a high-performance electrospinning/electret composite fiber filtering material. The high-performance electrospinning/electret composite fiber filtering material is prepared from the following raw material components in parts by weight: 75 to 90 parts of polythioetherimide, 5 to 10 parts of silicon monoxide, 8 to 15 parts of powdered activated carbon, 1 to 2 parts of 3-aminopropyltriethoxysilane coupling agent, 0.8 to 2 parts of glacial acetic acid, a proper amount of deionized water, 2 to 6 parts of metatitanic acid, a proper amount of 0.6mol/L AgNO3 solution, a proper amount of N-methylpyrrolidinone, 2 to 5 parts of organically modified montmorillonite, 18 to 30 parts of dimethylbenzene and 35 to 40 parts of ethanol. According to the high-performance electrospinning/electret composite fiber filtering material disclosed by the invention, silicon nanowires containing alpha-quartz are prepared; the electrospinning/electret composite fiber filtering material is prepared by an electrospinning technique and has excellent charge storage stability, and the filtering efficiency of the filtering material is greatly improved; besides, nano silver is added and nano titania is loaded, so that the antibacterial durability of the filtering material is improved, and a long-term and high-efficiency filtering effect is realized.

Description

technical field [0001] The invention belongs to the field of air filtration, and in particular relates to a high-performance electrostatic spinning / electret composite fiber filter material and a preparation method thereof. technical background [0002] With the deepening and rapid development of the industrialization process, the dust particles discharged into the atmosphere have increased sharply, among which PM2.5 (particulate pollutants with a particle size of less than 2.5µm) will cause serious harm to human health. It will directly enter the bronchi and cause diseases such as asthma, bronchitis, pneumoconiosis and cardiovascular disease. This is one of the main reasons for the sharp increase in lung cancer patients in my country. Therefore, air filter equipment has become a research hotspot, and the research and development of its core filter materials has become a top priority. [0003] The traditional melt-blown nonwoven electret material is treated with electret, and...

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Problems solved by technology

[0003] The traditional melt-blown nonwoven electret material is treated with electret, and the surface is charged to make it have a high filtration efficiency, but its charge stability is easily affected by the environ