Gelatin/polyetherimide compound electret fiber filtration material prepared through electrostatic spinning and preparation method thereof

Abstract

The invention discloses a gelatin/polyetherimide compound electret fiber filtration material prepared through electrostatic spinning. The gelatin/polyetherimide compound electret fiber filtration material is prepared from, by weight, 65-80 parts of polyetherimide, 10-18 parts of gelatin, 6-11 parts of silicon oxide, 9-16 parts of powdery activated carbon, 1-3 parts of 3-aminopropyl triethoxy silane coupling agent, 0.8-2 parts of glacial acetic acid, a proper amount of ionized water, 3-6 parts of metatitanic acid, 0.6 mol/L AgNO3 solution, a proper amount of N-methylpyrrolidone and 0.8-2 parts of acetic acid. Alpha-quartz-containing silicon nanowires are prepared by adopting the material, the gelatin/polyetherimide compound electret fiber filtration material is prepared through an electrostatic spinning technology and has excellent charge storage stability, and the filtering efficiency of the filtration material is greatly improved. In addition, nano silver is added and nano titanium dioxide is loaded to improve the antimicrobial persistence performance of the filtration material and to achieve a long-term and efficient filtration effect.

Description

technical field [0001] The invention belongs to the field of air filtration, in particular to a gelatin / polyetherimide composite electret fiber filter material prepared by electrospinning and a preparation method thereof. [0002] technical background [0003] 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. [0004] The traditional melt-blown nonwoven electret material is treated with electr...

AI Technical Summary

Problems solved by technology

[0004] 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 environment, and the charge decay rate is fast, and the filtration efficiency is greatly reduced.

In addition, the electret process, as a necessary post-treatment process, also increases the production cost to a certain extent