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Preparation method of air filtering material capable of releasing fragrance

An air filter material and fragrance technology, which is applied in the field of nanofibers, can solve problems such as easy generation of odor, achieve the effect of increasing fragrance release, broad application prospects, and improving air filtration performance

Active Publication Date: 2017-04-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantage that the existing air filter material is easy to produce peculiar smell during use, and to provide a preparation method of an air filter material that can release fragrance, which can bring pleasant use while satisfying the requirements of the air filter material to ensure human health. to experience

Method used

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  • Preparation method of air filtering material capable of releasing fragrance

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A preparation method of an air filter material capable of releasing fragrance, the steps are as follows:

[0028] 1) To prepare a solution, disperse the powdery fragrance-releasing substance agarwood in formic acid with a particle size of 0.2 μm, ultrasonicate for 5 minutes, and stir for 5 minutes to form a homogeneous dispersion, the mass fraction of the fragrance-releasing substance is 0.01wt%; then the molecular weight The large polymer nylon 6, with a weight average molecular weight of 200,000 Daltons, and the small molecular weight polymer nylon 66, with a weight average molecular weight of 10,000 Daltons, were added to the dispersion, ultrasonicated for 5 minutes, and stirred for 3 hours Form a stable spinning solution; the mass fraction of nylon 6 is 8wt%; the mass fraction of nylon 66 is 8wt%;

[0029] 2) Electrospinning, put the spinning solution prepared in step 1) in the liquid storage device, set the electrospinning parameters, the electrospinning parameters...

Embodiment 2

[0033] A preparation method of an air filter material capable of releasing fragrance, the steps are as follows:

[0034]1) To prepare a solution, disperse the powdered fragrance-releasing substance wisteria in tetrahydrofuran, with a particle size of 0.3 μm, sonicate for 10 minutes, and stir for 10 minutes to form a homogeneous dispersion, and the mass fraction of the fragrance-releasing substance is 0.05 wt %; Polymethyl methacrylate, a high molecular weight polymer with a weight average molecular weight of 220,000 daltons, and a high molecular weight polyvinyl acetate with a weight average molecular weight of 20,000 daltons are added to the dispersion, Ultrasound for 10 minutes, stirring for 8 hours to form a stable solution; the mass fraction of polymethylmethacrylate is 10wt%; the mass fraction of polyvinyl acetate is 10wt%;

[0035] 2) Electrospinning, put the solution prepared in step 1) in the liquid storage device, set the electrospinning parameters, the electrospinnin...

Embodiment 3

[0039] A preparation method of an air filter material capable of releasing fragrance, the steps are as follows:

[0040] 1) To prepare a solution, disperse the powdery fragrance-releasing substance Elemis in N,N-dimethylformamide, the particle size is 0.5 μm, ultrasonic 15min, and form a homogeneous dispersion after stirring for 15min. The quality of the fragrance-releasing substance Fraction is 1wt%; Then the polymer nylon 6 with big molecular weight, weight-average molecular weight is 240,000 daltons, and the little polymer polycaprolactone with molecular weight, weight-average molecular weight is 30,000 daltons, joins in In the dispersion, a stable solution was formed after ultrasonication for 15 minutes and stirring for 10 hours; the mass fraction of nylon 6 was 15 wt %; the mass fraction of polycaprolactone was 10 wt %;

[0041] 2) Electrospinning, place the solution prepared in step 1) in the liquid storage device, set the electrospinning parameters, the electrospinning ...

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Abstract

The invention provides a preparation method of an air filtering material capable of releasing fragrance. The method comprises the following steps: 1, preparing a solution: dispersing a fragrance releasing substance in a solvent, carrying out ultrasonic stirring to form a dispersion, adding a polymer to the dispersion, and carrying out ultrasonic mixing to form the spinning solution; and 2, carrying out electrostatic spinning: placing the solution prepared in step 1 in a liquid storage device, setting electrostatic spinning parameters, releasing etching steam in a range having a certain distance to a receiving base material, and using the etching steam to carry out in-situ etching in the phase separation process of spinning solution jet to form a micropore structure on the surface of fibers, which allows the fragrance releasing substance distributed in nano-fibers to be exposed in order to form the air filtering material capable of releasing fragrance. The fragrance release evaluation score of the prepared material is 24-40, the fragrance releasing stability is that the evaluation score in 300 d reduces by 0-10, the filtering efficiency of 0.3-10 [mu]m particles is 80-100%, and the resistance pressure drop is 10-100 Pa.

Description

technical field [0001] The invention belongs to the field of nanofibers and relates to a preparation method of an air filter material capable of releasing fragrance. Background technique [0002] At present, air filter materials have become an effective means to deal with smog, but the existing air filter materials have the problems of low filtration efficiency and large resistance pressure drop, and they will produce serious odors with the accumulation of dirt inside during use , causing discomfort. Electrospun nanofibers have the characteristics of small fiber diameter, small pore size, high porosity, and strong structure adjustability. The composite filter material prepared by combining it with the substrate has the advantages of high filtration efficiency and low air resistance. The material of choice, but the current electrospun nanofiber filter material does not involve the technology of fragrance release. The existing air filter materials that can release fragrances...

Claims

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Application Information

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IPC IPC(8): B01D39/14A61L9/013A61L101/56
CPCA61L9/013B01D39/14B01D2239/0407B01D2239/10
Inventor 丁彬赵兴雷李玉瑶廖亚龙蒋攀华婷印霞孙刚俞建勇
Owner DONGHUA UNIV
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