A kind of transparent pm2.5 filter film with photocatalysis and preparation method thereof

A filter membrane and photocatalysis technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, separation methods, etc., can solve the problem of single function, poor air permeability, low light transmittance of air filter membrane, etc. problems, to achieve high-efficiency filtration performance, stable performance, and good lighting effects

Active Publication Date: 2020-09-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a kind of transparent PM2.5 filter film with photocatalysis and its preparation method for the deficiencies in the above-mentioned prior art, and improve the low light transmittance and poor air permeability of the existing air filter film And the problem of single function is suitable for indoor air purification devices and window screen materials and other fields

Method used

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  • A kind of transparent pm2.5 filter film with photocatalysis and preparation method thereof
  • A kind of transparent pm2.5 filter film with photocatalysis and preparation method thereof
  • A kind of transparent pm2.5 filter film with photocatalysis and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] S1, spinning solution preparation

[0045] Weigh respectively the polyacrylonitrile powder (PAN) of 3g, the nanometer titanium dioxide powder (TiO2) of 0.6g 2 ), 47g N,N-dimethylformamide (DMF), slowly add PAN powder into the DMF solution, stir magnetically at 25°C for 8h, and then add nano-TiO 2 Slowly add to the solution, continue stirring at 25°C for 8h, and prepare PAN@TiO with a mass fraction of 6%. 2 Spinning solution: Weigh 6g of polyamide-6 particles (PA6) and dissolve them in 44g of formic acid solution, stir magnetically at 25°C for 18 hours until the PA6 particles are completely dissolved, and prepare a PA6 spinning solution with a mass percentage of 12%, which is set aside.

[0046] S2, PAN@TiO 2 / PA6 composite nanofiber preparation

[0047] The above PAN@TiO 2 Spinning solution and PA6 spinning solution are respectively injected into the two liquid storage cylinders of syringe 2 in micro-injection pump 3, tinfoil paper is placed on receiving device 5, s...

Embodiment 2

[0053] S1, spinning solution preparation

[0054] Weigh respectively the polyacrylonitrile powder (PAN) of 4g, the nano titanium dioxide powder (TiO2) of 0.8g 2 ), 46g N,N-dimethylformamide (DMF). Slowly add PAN powder into the DMF solution, stir magnetically at 25°C for 12h, and then add nano-TiO 2 Slowly add to the solution, continue stirring at 25°C for 12h, and prepare PAN@TiO with a mass fraction of 8% 2 Spinning solution: Weigh 7g of polyamide-6 particles (PA6) and dissolve them in 43g of formic acid solution, stir magnetically at 25°C for 24h until the PA6 particles are completely dissolved, and prepare a PA6 spinning solution with a mass percentage of 14%.

[0055] S2, PAN@TiO 2 / PA6 composite nanofiber preparation

[0056] The above PAN@TiO 2 Spinning solution and PA6 spinning solution are respectively injected into the two liquid storage cylinders of syringe 2 in micro-injection pump 3, tinfoil paper is placed on receiving device 5, start high-voltage power supp...

Embodiment 3

[0062] S1, spinning solution preparation

[0063] Take respectively the polyacrylonitrile powder (PAN) of 5g, the nano titanium dioxide powder (TiO2) of 1g 2 ), 45g N,N-dimethylformamide (DMF). Slowly add PAN powder into the DMF solution, stir magnetically at 25°C for 12h, and then add nano-TiO 2 Slowly add to the solution, continue to stir at 25°C for 12h, and prepare a PAN@TiO2 spinning solution with a mass fraction of 10%; weigh 8g of polyamide-6 particles (PA6) and dissolve it in 42g of formic acid solution, and stir magnetically at 25°C for 24h Until the PA6 particles are completely dissolved, a PA6 spinning solution with a mass percentage of 16% is prepared.

[0064] S2, PAN@TiO 2 / PA6 composite nanofiber preparation

[0065] The above PAN@TiO 2 and polyamide-6 spinning solution are respectively injected into the two liquid storage cylinders of the syringe 2 in the micro-injection pump 3, the tinfoil paper is placed on the receiving device 5, the high-voltage power ...

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Abstract

The invention discloses a transparent PM2.5 filtering membrane with photocatalysis and a preparation method of the transparent PM2.5 filtering membrane. The transparent PM2.5 filtering membrane is a composite nano fiber membrane of a sandwich-like structure and comprises polyacrylonitrile @TiO2 and polyamide-6, wherein the nano fiber diameter of the composite nano fiber membrane is 60-100nm. The composite membrane is densely cross-linked in a net manner and meanwhile has a photocatalysis function, high transparency and an efficient PM2.5 filtration property, when being applied to a protectivenano screen window, the membrane is capable of not only effectively preventing outdoor PM2.5 from entering a room, but also photocatalyzing low-concentration harmful gases in the atmosphere in a photocatalysis manner under the action of sunshine, and meanwhile good lighting and ventilation effects are maintained.

Description

technical field [0001] The invention belongs to the technical field of filter material preparation, in particular to a photocatalytic transparent PM2.5 high-efficiency filter membrane and a preparation method thereof. Background technique [0002] With the development of industrialization, the pollution of the environment and air has further intensified, and the harm caused by PM2.5 has attracted worldwide attention. PM2.5 is called "particulate matter that can enter the lungs", which can directly enter the lungs of people. Because it contains toxic and harmful substances, stays in the air for a long time, and is transported over a long distance, it will inevitably affect the quality of the air environment and human health. Negative impact. In addition, the indoor air quality has also attracted people's attention, especially during severe smog, the PM2.5 value in the indoor air is even higher than that in the outdoor air, and at the same time, the indoor VOCs concentration ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/54B01D53/86B01D53/44B01D67/00B01D69/12B01J31/38B01J35/06
CPCB01D46/543B01D53/8687B01D67/0079B01D69/12B01J31/38B01J35/004B01J35/065
Inventor 张静熊叶薛朝华张明明
Owner SHAANXI UNIV OF SCI & TECH
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