Vinyl polysiloxane-containing electrostatic spinning and electret composite fiber filter material and preparation method thereof

Abstract

The invention discloses a vinyl polysiloxane-containing electrostatic spinning and electret composite fiber filter material. The material is prepared from 30-45 parts of polyetherimide, 45-55 parts of vinyl polysiloxane, 6-10 parts of silicon monoxide, 8-15 parts of powdered activated carbon, 1-2 parts of 3-aminopropyltriethoxysilane coupling reagent, 0.8-2 parts of glacial acetic acid, a proper amount of deionized water, 2-6 parts of metatitanic acid, a proper amount of 0.6 mol/L of AgNO3 solution, a proper amount of N-methyl pyrrolidone, 0.5-1 part of sodium chloride and 15-30 parts of methylbenzene. Alpha-quartz-containing silicon nanowires are prepared, and the electrostatic spinning and electret composite fiber filter material is prepared by the electrostatic spinning technology; the filter material has the advantages of being small in aperture, high in poriness, low in air friction and the like, has excellent charge storage stability performance, and improves the filter efficiency of the filter material; the antibacterial durability of the filter material is improved and a long-term efficient filtration effect is achieved.

Description

technical field [0001] The invention belongs to the field of air filtration, and in particular relates to an electrostatic spinning / electret composite fiber filter material containing vinyl polysiloxane 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 trea...

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