Electrostatic-spinning nano fiber air filter material and preparation method thereof

An air filter material and nanofiber technology, applied in chemical instruments and methods, textiles and papermaking, non-woven fabrics, etc., can solve the problems of general filtration efficiency and poor mechanical properties of glass fiber membranes, and achieve controllability and good repeatability , solve the effect of high resistance and low filter resistance

Inactive Publication Date: 2016-07-13
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Effectively overcome the defects of general filtration efficiency, poor mechanical properties and carcinogenic risks of glass fiber membranes

Method used

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  • Electrostatic-spinning nano fiber air filter material and preparation method thereof
  • Electrostatic-spinning nano fiber air filter material and preparation method thereof
  • Electrostatic-spinning nano fiber air filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Dissolve 5g of polyacrylonitrile in 45g of N,N-dimethylformamide, stir for 8h until completely dissolved, and obtain polyacrylonitrile / N,N-dimethylformamide with a concentration of 10% (g / g) spinning solution. Electrospinning was carried out with the patented ZL201320046228.5 spinning nozzle, the parameters were: voltage 60KV, receiving distance 15cm, drum speed 30r / min, spinning time 10min, ambient temperature 25°C, ambient relative humidity 55%.

[0039]The drum is used as the receiving device to prepare a nanofiber membrane with high filtration efficiency, low filtration resistance and good air permeability. The filter material prepared by the above method is made into 3 air filtration product samples. Their fiber diameter, pore size, and filtration efficiency , filter resistance, air permeability and moisture permeability test data are shown in Table 1.

[0040] Table 1

[0041]

Embodiment 2

[0043] Dissolve 7g of polyacrylonitrile in 43g of N,N-dimethylformamide, stir for 8h until completely dissolved to obtain polyacrylonitrile / N,N-dimethylformamide with a concentration of 10% (g / g) spinning solution. Electrospinning was carried out using the patented ZL201320046228.5 spinning nozzle, the parameters were: voltage 68KV, receiving distance 20cm, drum speed 30r / min, spinning time 15min, ambient temperature 27°C, ambient relative humidity 45%.

[0044] The drum is used as the receiving device to prepare a nanofiber membrane with high filtration efficiency, low filtration resistance and good air permeability. The filter material prepared by the above method is made into 3 air filtration product samples. Their fiber diameter, pore size, and filtration efficiency , filter resistance, air permeability and moisture permeability test data are shown in Table 2.

[0045] Table 2

[0046]

Embodiment 3

[0048] Dissolve 5g of polyvinylidene fluoride in 45g of N,N-dimethylformamide, stir for 8h until completely dissolved, and obtain polyacrylonitrile / N,N-dimethylformamide with a concentration of 10% (g / g). Amide spinning solution. Electrospinning was carried out using the patented ZL201320046228.5 spinning nozzle. The parameters were: voltage 65KV, receiving distance 15cm, drum speed 60r / min, spinning time 20min, ambient temperature 25°C, and ambient relative humidity 40%.

[0049] The drum is used as the receiving device to prepare a nanofiber membrane with high filtration efficiency, low filtration resistance and good air permeability. The filter material prepared by the above method is made into 3 air filtration product samples. Their fiber diameter, pore size, and filtration efficiency , filter resistance, air permeability and moisture permeability test data are shown in Table 3.

[0050] table 3

[0051]

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Abstract

The invention discloses an electrostatic-spinning nano fiber air filter material and a preparation method thereof, aiming at solving the problems of an electrostatic-spinning nano fiber membrane product that the filtering resistance is high, the air permeability and the moisture penetrability are poor, and the industrial application is difficult. By adjusting solution properties and a spinning process, the diameter, pore diameter and orientation distribution of nano fibers can be effectively controlled; the prepared nano fibers have narrow diameter and pore diameter distribution, and the orientation degree is about 0.26-0.33; the filtering efficiency of a prepared nano fiber membrane and a prepared air filtering product is up to 99.55%, the filtering resistance is 150Pa-200Pa, the air permeability can reach 355L.m<-2>.<-1> and the moisture penetrability can reach 9.6m<2>.Pa / w, namely, the air permeability and the moisture penetrability are good; and the preparation method is convenient and rapid, small-batch production can be reduced, and the product has a very good application prospect in the field of air filtering.

Description

technical field [0001] The invention relates to an electrospinning nanofiber air filter material and a preparation method thereof, in particular, using polymer materials of different types and structures as raw materials, adopting a three-dimensional free surface electrospinning method to prepare nanofiber membranes in batches, and the prepared nanofiber membranes The material can be applied to air filtration products such as personal dust masks, air purifiers, air conditioner filters, and car filters. Background technique [0002] Air filter materials can effectively intercept harmful dust particles in the air to meet the clean space needs of people's lives and industrial production. At present, the materials used in air filtration facilities and equipment mainly include ultra-fine glass fibers, carbon fiber mats, polymer fabrics, and melt-blown non-woven products. Among them, melt-blown non-woven fabrics, especially non-woven fabrics treated with electret, occupy the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/42B01D71/58B01D71/30B01D71/56B01D71/28B01D71/74B01D71/34B01D71/26B01D69/02B01D67/00D04H1/728D04H1/76D04H1/4382
CPCB01D67/0002B01D69/02B01D71/26B01D71/28B01D71/30B01D71/34B01D71/42B01D71/56B01D71/58B01D71/74D04H1/4382D04H1/728D04H1/76
Inventor 覃小红娄莉华张弘楠凌超赵晓
Owner DONGHUA UNIV
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