Electrostatic spun/electret composite fiber filter material comprising sodium tartrate intercalated hydrotalcite and preparation method of filter material

Abstract

The invention discloses an electrostatic spun / electret composite fiber filter material comprising sodium tartrate intercalated hydrotalcite. The filter material is prepared from components in parts by weight as follows: 75-90 parts of polyetherimide, 6-12 parts of silicon monoxide, 9-15 parts of powdered activated carbon, 1-3 parts of a 3-aminopropyl triethoxy silane coupling agent, 0.8-2 parts of glacial acetic acid, a proper amount of deionized water, 3-6 parts of metatitanic acid, a proper quantity of 0.6 mol / L of an AgNO3 solution, a proper amount of N-methylpyrrolidinone, 1-2 parts of sodium tartrate, 7-14 parts of a 4.0 M magnesium chloride aqueous solution, 7-14 parts of a 1.0 M aluminum chloride aqueous solution and a proper quantity of a 20% NaOH solution. Silicon nanowires containing alpha-quartz are prepared, the electrostatic spun / electret composite fiber filter material is prepared with the electrostatic spinning technology and has excellent charge storage stability, and the filter efficiency of the filter material is greatly improved; besides, nano silver is added to support nano titanium dioxide, and the antibacterial endurance property of the filter material is improved.

Description

technical field [0001] The invention belongs to the field of air filtration, in particular to a sodium tartrate intercalated hydrotalcite electrospinning / electret composite fiber filter material 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...

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