A long-term electret nanofiber filter material and preparation method thereof
A nanofiber and filter material technology, which is applied in the field of long-acting electret nanofiber filter material and its preparation, can solve the problems of unstable electret performance and low filtering efficiency of fine particles, and achieves low production cost and good air permeability. The effect of small size and fiber diameter
Active Publication Date: 2022-05-31
中科贝思达(厦门)环保科技股份有限公司
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[0004] The purpose of the present invention is to provide a long-term electret nanofiber filter material and its preparation method, to solve the unstable electret performance of the electret nanofiber filter material in the prior art, resulting in low filtration efficiency of fine particles in the air technical issues
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[0074] 75 parts of N,N-dimethylformamide solvent.
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The invention provides a long-acting electret nanofiber filter material and a preparation method thereof, which belong to the technical field of new materials and solve the problem of unstable electret performance of the electret nanofiber filter material existing in the prior art, resulting in the The technical problem of low filtration efficiency of fine particles. The filter material is prepared by electrospinning a spinning solution, wherein the spinning solution includes the following components in parts by weight: 0-30 parts of a polymer; 1-30 parts of a hyperbranched polymer; and a solvent 40-99 parts; Wherein, described hyperbranched polymer is the hyperbranched polymer with the dipole structure side group of electron donor-π conjugated system-electron acceptor. In the present invention, the hyperbranched polymer and the polymer are dissolved together, and the electrospinning technology is used to prepare a polyamide with high PM 2.5 The air filter material with filtering performance, low resistance pressure drop and maintaining ideal performance stability has the advantages of simple preparation method and low production cost.
Description
A kind of long-acting electret nanofiber filter material and preparation method thereof technical field The present invention relates to new material technical field, relate in particular to a kind of long-acting electret nanofiber filter material and preparation thereof method. Background technique The particle size of fine particles in the air is small, the residence time in the atmosphere is long, and the conveying distance is long, which can be harmful to human health. It can cause great harm and easily lead to various diseases such as pneumonia and decreased lung function. Meltblown, glass and spunbond fibers The prepared air filter material is an effective measure to protect the fine particles in the air. At present, traditional air filter material mainly contains following five kinds to the filtering mechanism of fine particulate matter in the air: Intercept effect, sieve effect, inertia effect, Brown effect and electrostatic effect. Meltblown fibers, glas...
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IPC IPC(8): B01D39/04B01D39/16B03C3/017D01D5/00D01F8/08D01F8/10D01F8/16
CPCB01D39/04B01D39/1623B01D46/0032D01D5/003D01D5/0084D01F8/08D01F8/10D01F8/16B01D2239/10B01D2239/0407Y02P70/62
Inventor 谢建达邢家思曾雨萍
Owner 中科贝思达(厦门)环保科技股份有限公司