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Bacteria filter bag with good filter effect and preparation method thereof

A filter effect and filter bag technology, which is applied in the field of bacterial filter bags and its preparation, can solve the problems of poor antibacterial effect, achieve the effects of improving dispersion effect, enriching pore structure, and improving bacterial filtration effect

Inactive Publication Date: 2021-11-05
深圳市斯达辉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a bacterial filter bag with good filtering effect and its preparation method, so as to solve the technical problem of poor antibacterial effect of the existing bacterial filter bag

Method used

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  • Bacteria filter bag with good filter effect and preparation method thereof
  • Bacteria filter bag with good filter effect and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] A preparation method for a bacterial filter bag with good filtering effect, comprising the steps of:

[0029] (1) Preparation of chitosan microspheres: Mix 100g polyoxyethylene and 15g fatty acid glycerides evenly, add 30g, 10wt% chitosan solution to it, emulsify at 25°C for 2h, then add 18g pentadiene Aldehydes were reacted at 60°C for 4 hours. After the reaction, the reaction product was centrifuged, washed and dried to obtain chitosan microspheres;

[0030] (2) Preparation of quaternized chitosan microspheres: uniformly disperse 100 g of chitosan microspheres in 800 g of acetone solvent, then add 60 g of phosphate ester quaternization reagent, and react at 45° C. for 6 h. After the reaction, the The reaction product is washed and dried to obtain quaternized chitosan microspheres;

[0031] (3) Preparation of SiO 2 / Quaternized chitosan microspheres: 25g tetraethyl orthosilicate, 15g absolute ethanol, 100g deionized water and 6g, 0.8mol / L NH 4 The Cl solution was mi...

Embodiment 2

[0035] A preparation method for a bacterial filter bag with good filtering effect, comprising the steps of:

[0036](1) Preparation of chitosan microspheres: 100g polyoxyethylene and 20g fatty acid glycerides were mixed evenly, 35g, 10wt% chitosan solution was added thereto, emulsified at 25°C for 3h, and then 20g pentadiene was added Aldehydes were reacted at 60°C for 4 hours. After the reaction, the reaction product was centrifuged, washed and dried to obtain chitosan microspheres;

[0037] (2) Preparation of quaternized chitosan microspheres: uniformly disperse 100 g of chitosan microspheres in 850 g of acetone solvent, then add 70 g of phosphate ester quaternization reagent, and react at 45° C. for 6 h. After the reaction, the The reaction product is washed and dried to obtain quaternized chitosan microspheres;

[0038] (3) Preparation of SiO 2 / Quaternized chitosan microspheres: 30g tetraethyl orthosilicate, 15g absolute ethanol, 100g deionized water and 7g, 1.0mol / L NH...

Embodiment 3

[0042] A preparation method for a bacterial filter bag with good filtering effect, comprising the steps of:

[0043] (1) Preparation of chitosan microspheres: 100g polyoxyethylene and 25g fatty acid glycerides were mixed evenly, 38g, 10wt% chitosan solution was added thereto, emulsified at 25°C for 2h, and then 20g pentadiene was added Aldehydes were reacted at 70°C for 4 hours. After the reaction, the reaction product was centrifuged, washed and dried to obtain chitosan microspheres;

[0044] (2) Preparation of quaternized chitosan microspheres: uniformly disperse 100 g of chitosan microspheres in 900 g of acetone solvent, then add 75 g of phosphate ester quaternization reagent, and react at 45° C. for 7 hours. After the reaction, the The reaction product is washed and dried to obtain quaternized chitosan microspheres;

[0045] (3) Preparation of SiO 2 / Quaternized chitosan microspheres: 35g tetraethyl orthosilicate, 20g absolute ethanol, 100g deionized water and 8g, 1.0mol...

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Abstract

The invention discloses a bacteria filter bag with a good filter effect and a preparation method thereof. The preparation method comprises the four steps of: preparing chitosan microspheres, preparing quaternized chitosan microspheres, preparing polystyrene cross-linked quaternized chitosan microspheres and preparing the bacteria filter bag. The quaternized chitosan microspheres provided by the invention have a rich pore structure, can effectively adsorb bacteria in the process of filtering bacteria, achieve an antibacterial purpose by inhibiting the growth of cells, and meanwhile, release xanthan gum to break the cells of the bacteria so as to achieve an antibacterial effect. In addition, the introduction of SiO2 can effectively protect the morphology of the quaternized chitosan microspheres, the porous structure of the quaternized chitosan microspheres provides an accommodation place for redundant bacteria and plays a role of a buffer layer, and sterilization and bacteriostasis are achieved while bacteria are filtered.

Description

technical field [0001] The invention relates to the technical field of filter bag preparation, in particular to a bacterial filter bag with good filtering effect and a preparation method thereof. Background technique [0002] In recent years, the serious harm caused by air pollution has received widespread attention. Microorganisms, bacteria and infectious disease viruses often attach to air particles. In addition, plankton in the air that are resistant to ultraviolet rays mainly attach to dust, effectively blocking microorganisms and bacteria. One of the ways of spreading infectious diseases and viruses is to filter and remove the carrier of air particulate matter. For conventional non-woven bacterial filter bags, the higher the gas flow rate, the lower the particle filtration efficiency and bacterial filtration efficiency of the bacterial filter bag. There is a linear relationship between particle filtration efficiency and bacterial filtration efficiency. In a low gas flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/08
CPCB01D39/086B01D2239/04
Inventor 甘志华罗先娥侯悦
Owner 深圳市斯达辉科技有限公司
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