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Natural polymer modified functional air filtering material and preparation method thereof

An air filter material and natural polymer technology, applied in the separation method, dispersed particle filtration, filtration separation, etc., can solve the problems of special equipment, cumbersome modification process, secondary pollution, etc., and achieve formaldehyde removal and low gas passage resistance , low-cost effect

Inactive Publication Date: 2020-06-26
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the surface of polypropylene fiber is chemically inert, the methods of modifying polypropylene nonwoven fabric to make it have the function of removing formaldehyde are mostly the use of chemical adhesives, strong acid and strong alkali etching, hot melt method, plasma treatment, low temperature, etc. Magnetron sputtering requires special equipment, and the modification process is cumbersome, especially many chemical adhesives contain volatile organic compounds, which may cause secondary pollution if used in air filter materials

Method used

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  • Natural polymer modified functional air filtering material and preparation method thereof
  • Natural polymer modified functional air filtering material and preparation method thereof
  • Natural polymer modified functional air filtering material and preparation method thereof

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Embodiment 1

[0028] A preparation method of a natural polymer modified functional air filter material, firstly, the water-soluble chitosan can be dispersed in distilled water at 16% by mass, that is, the water-soluble chitosan can be dispersed in distilled water to form a mixture, and the water-soluble chitosan can be dispersed in distilled water to form a mixture. The quality of polysaccharide can account for 16% of the total mass of the mixture, and it can be stirred and dissolved in a water bath at 60°C to obtain a colloidal chitosan adhesive; Coating devices such as droppers, glass rods, scrapers, coating rods or automatic coating machines are evenly spread on the surface of the base fabric of polypropylene nonwoven fabrics, and the chitosan adhesive dripped from the base fabric is collected and coated On the surface of the base cloth; finally, dry the soaked base cloth at 50°C for 24 hours.

Embodiment 2

[0030] A preparation method of a natural polymer modified functional air filter material, firstly, water-soluble chitosan can be dispersed in distilled water at 28% by mass, that is, the water-soluble chitosan can be dispersed in distilled water to form a mixture, and the water-soluble chitosan can be dispersed in distilled water to form a mixture. The mass of polysaccharide can account for 28% of the total mass of the mixture, and it can be stirred and dissolved in a water bath at 60°C to obtain a colloidal chitosan adhesive; Coating devices such as droppers, glass rods, scrapers, coating rods or automatic coating machines are evenly spread on the surface of the base fabric of polypropylene nonwoven fabrics, and the chitosan adhesive dripped from the base fabric is collected and coated On the surface of the base cloth; finally, dry the soaked base cloth at 50°C for 24 hours.

Embodiment 3

[0032] A preparation method of a natural polymer modified functional air filter material, firstly, the water-soluble chitosan can be dispersed in distilled water according to the mass percentage of 37%, that is, the water-soluble chitosan can be dispersed in distilled water to form a mixture, and the water-soluble chitosan can be dispersed in distilled water to form a mixture. The quality of polysaccharide can account for 37% of the total mass of the mixture, and it can be stirred and dissolved in a water bath at 60°C to obtain a colloidal chitosan adhesive; Coating devices such as droppers, glass rods, scrapers, coating rods or automatic coating machines are evenly spread on the surface of the base fabric of polypropylene nonwoven fabrics, and the chitosan adhesive dripped from the base fabric is collected and coated On the surface of the base cloth; finally, dry the soaked base cloth at 50°C for 24 hours.

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Abstract

The invention discloses a preparation method of a natural polymer modified functional air filtering material. The method comprises the following steps: dispersing water-soluble chitosan in distilled water, and stirring and dissolving under the condition of water bath heating to obtain a colloidal chitosan adhesive; uniformly smearing the prepared chitosan adhesive on the surface of base cloth of non-woven fabric, and standing to enable the chitosan adhesive to soak the base cloth; and then drying the soaked base cloth. The invention also discloses a natural polymer modified functional air filtering material which is a functional air filtering material prepared from non-woven fabric and has the characteristics of removing bacteria and formaldehyde and being small in gas passing resistance.The preparation method disclosed by the invention is simple and easy to implement and low in cost and has the potential of large-scale popularization.

Description

technical field [0001] The invention relates to an air filter material and a preparation method thereof, in particular to a natural polymer modified functional air filter material and a preparation method thereof. Background technique [0002] At present, more than 80% of the time in a person's life is spent indoors, and the quality of indoor air is closely related to people's health. The 2002 World Health Report has pointed out that indoor air pollution, high blood pressure, high cholesterol and obesity are listed as one of the major threats to human health. The types of indoor air pollution mainly include particle pollution (particles and pollen, etc.), biological pollution (bacteria and viruses, etc.) and chemical pollution (inorganic and organic compounds). Since the 1980s, with the rapid development of my country's economy, the problem of indoor air pollution in civil buildings in my country has appeared on a large scale, especially indoor formaldehyde pollution caused...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D53/72B01D39/16
CPCB01D39/16B01D46/0001B01D46/0028B01D53/72
Inventor 邢金城杨一帆凌继红张燊
Owner TIANJIN UNIV
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