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Porous composite membrane for air purification and preparation method thereof

A porous composite membrane, air purification technology, applied in the field of air purification, can solve the problems of air purification components pollution, body damage, entering the human circulatory system, etc., and achieve good bacteriostatic effect and prevent reproduction.

Active Publication Date: 2021-03-12
绍兴市上虞区武汉理工大学高等研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the air pollutants that plague people most are inhalable particles and fine particles. These substances float in the air and are difficult to settle. Inhaling these particles will directly cause respiratory diseases, and some particles will even enter the human circulatory system, causing serious physical damage. Therefore, the current air purification devices mostly use the method of gas-solid separation to filter the air to filter out floating particles, so as to achieve the purpose of purifying the air. However, in addition to particles, there are various microorganisms floating in the air. Although these microorganisms also It can be filtered out by some porous membranes, but microorganisms can still survive on the porous membranes full of impurities, and the spores or reproductive tissues produced by them can still pass through the porous membranes. If the filtered pollutants are not cleaned up in time, the air purification components will instead Become a Pollution Spreader
[0004] However, frequent cleaning will reduce the user experience, so there is an urgent need for a porous composite membrane that can read and filter out microorganisms for killing

Method used

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  • Porous composite membrane for air purification and preparation method thereof
  • Porous composite membrane for air purification and preparation method thereof
  • Porous composite membrane for air purification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 1kg of polyvinyl chloride, measure 1L of methanol and 2L of dichloromethane, mix them to obtain the first solvent, mix the polyvinyl chloride and the first solvent, put them into the reaction kettle, raise the temperature to 55°C, keep stirring for 2 hours, and obtain the film-forming liquid.

[0031] Then weigh 1kg of Na 7 PMo 11 NiO 40 , Measure 5L of dichloromethane, mix Na 7 PMo 11 NiO 40 and dichloromethane to obtain an atmospheric liquid.

[0032] Nitrogen at 45°C passes through the atmosphere liquid and then blows to the surface of the non-woven fabric, and coats the film-forming solution on the surface of the non-woven fabric with a thickness of no more than 1 mm. After the solvent on the surface of the non-woven fabric is dried, a composite film is obtained . The profile structure is as figure 1 shown.

Embodiment 2

[0034] Weigh 1kg of polyvinyl chloride, measure 1L of methanol and 2L of dichloromethane, mix them to obtain the first solvent, mix the polyvinyl chloride and the first solvent, put them into the reaction kettle, raise the temperature to 55°C, keep stirring for 2 hours, and obtain the film-forming liquid.

[0035] Then weigh 1kg of Na 7 PMo 11 NiO 40 , Measure 5L of dichloromethane, mix Na 7 PMo 11 NiO 40 and dichloromethane to obtain an atmospheric liquid.

[0036] Nitrogen at 45°C passes through the atmosphere liquid and then blows to the surface of the non-woven fabric, and coats the film-forming solution on the surface of the non-woven fabric with a thickness of no more than 1 mm. After the solvent on the surface of the non-woven fabric is dried, a composite film is obtained .

[0037] Then weigh 1kg polyisonitrile and 500ml DMF, mix and stir to dissolve to obtain a polyisonitrile solution, coat the polyisonitrile solution on the surface of the polyvinyl chloride la...

Embodiment 3

[0039] Weigh 1kg of polyvinyl chloride, measure 1L of methanol and 3L of chloroform, mix them to obtain the first solvent, mix the polyvinyl chloride and the first solvent, put them into the reaction kettle, raise the temperature to 58°C, keep stirring for 2 hours, and obtain the film-forming liquid.

[0040] Then weigh 1kg of Na 7 PMo 11 MnO 40 , Measure 6L chloroform, mix Na 7 PMo 11 MnO 40 and chloroform to obtain an atmospheric liquid.

[0041] The nitrogen gas at 48°C passes through the atmosphere liquid and then blows to the surface of the non-woven fabric, and the film-forming liquid is coated on the surface of the non-woven fabric with a thickness of no more than 1mm. After the solvent on the surface of the non-woven fabric is dried, a composite film is obtained .

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Abstract

The invention provides a porous composite membrane for air purification and a preparation method thereof. The preparation method comprises the steps that mixing and converying polyvinyl chloride and afirst solvent into a reaction kettle, increasing the temperature to 55-65 DEG C, carrying out heat preservation and stirring for 2-3 h, obtaining a membrane forming solution, mixing and stirring polyoxometallate and a second solvent evenly, obtaining an atmosphere solution, adopting nitrogen as carrier gas, and blowing steam of the atmosphere solution to the surface of an obtained base membrane,uniformly coating the surface of the base membrane with the membrane forming solution, and drying the solvent to obtain the porous composite membrane. The porous composite membrane prepared by adopting the method can inhibit microorganisms in air and prevent the microorganisms from continuously propagating on the surface of the membrane to generate harmful substances to influence the air quality,so that the air purification effect is improved.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a porous composite membrane for air purification and a preparation method thereof. Background technique [0002] Air is the most basic material for human survival. The quality of air directly affects people's health. With the increase of air pollution, people's demand for air purification is also increasing. [0003] At present, the air pollutants that plague people most are inhalable particles and fine particles. These substances float in the air and are difficult to settle. Inhaling these particles will directly cause respiratory diseases, and some particles will even enter the human circulatory system, causing serious physical damage. Therefore, the current air purification devices mostly use the method of gas-solid separation to filter the air to filter out floating particles, so as to achieve the purpose of purifying the air. However, in addition to particles, there...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D69/02B01D67/00
CPCB01D69/12B01D69/02B01D67/0002B01D2325/48
Inventor 郭玲琼徐飞飞范晓庆邱凤桃刘博
Owner 绍兴市上虞区武汉理工大学高等研究院
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