A kind of plant polysaccharide aerogel air purification material and preparation method

An air purification material and plant polysaccharide technology, applied in chemical instruments and methods, separation methods, gas treatment and other directions, can solve the problems of limited application of aerogel, limited resources, difficult degradation, etc., achieve excellent adsorption performance, and reduce raw material costs. , the effect of enriching the network structure

Active Publication Date: 2021-03-05
WUHAN LICHENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the raw materials (precursors) of aerogels come from petroleum products, which have limited resources, high cost, high toxicity, and difficult degradation. The application of aerogels prepared from petroleum products as raw materials is limited.

Method used

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  • A kind of plant polysaccharide aerogel air purification material and preparation method
  • A kind of plant polysaccharide aerogel air purification material and preparation method
  • A kind of plant polysaccharide aerogel air purification material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A preparation method of plant polysaccharide airgel air-purifying material, comprising the following steps:

[0055] (1) Sol-gel ingredients

[0056] Mix 1g of starch, 3g of gelatin and 93.9g of water, stir for 20min at a temperature of 60°C, and rotate at a speed of 500rpm; then add 1g of konjac glucomannan, 1g of rice straw powder and 0.1g of nano-calcium carbonate, and stir at a temperature of 60°C Under the condition of a speed of 800 rpm, after stirring for 60 minutes, vacuum degassing treatment was performed to obtain a mixed sol.

[0057] (2) Film injection

[0058] The mixed sol sample was poured into a mold at 60°C for molding with a molding thickness of 2mm.

[0059] (3) Aging treatment

[0060] Place the mold filled with the mixed sol in an environment of 30° C. for aging for 2 hours.

[0061] (4) Pre-freezing

[0062] Place the semi-finished product in step (3) in a freezing environment for pre-freezing, the pre-freezing temperature is -10°C, and the ti...

Embodiment 2

[0068] A preparation method of plant polysaccharide airgel air-purifying material, comprising the following steps:

[0069] (1) Sol-gel ingredients

[0070] Mix 2g of starch, 2g of gelatin and 92.3g of water, stir at 80°C for 20min, and rotate at 600rpm; then add 1.5g of konjac glucomannan, 2g of wheat straw powder and 0.2g of nano-calcium carbonate, at a temperature of 80°C, Under the condition of a stirring speed of 900 rpm, after stirring for 90 min, degassing treatment was performed to obtain a mixed sol.

[0071] (2) Film injection

[0072] The mixed sol sample was poured into a mold at 80°C for molding, and the molding thickness was 5 mm.

[0073] (3) Aging treatment

[0074] The mold filled with the mixed sol was placed in an environment of 20°C for aging, and the aging time was 6 hours.

[0075] (4) Pre-freezing

[0076] Place the semi-finished product in step (3) in a freezing environment for pre-freezing, the pre-freezing temperature is -15°C, and the time is 10...

Embodiment 3

[0083] A preparation method of plant polysaccharide airgel air-purifying material, comprising the following steps:

[0084] (1) Sol-gel ingredients

[0085] Mix 3g starch, 2g gelatin and 90.7g water, stir at 90°C for 20min, and rotate at 600rpm; then add 1g konjac glucomannan, 3g corn straw powder and 0.3g nano-silicon dioxide to it, at a temperature of 90°C, Under the condition of a stirring speed of 1000 rpm, after stirring for 90 min, vacuum degassing treatment was performed to obtain a mixed sol.

[0086] (2) Film injection

[0087] Pour the mixed sol into a mold at 90°C for molding, and the molding thickness is 5 mm.

[0088] (3) Aging treatment

[0089] The mold filled with the mixed sol was placed in an environment of 15°C for aging, and the aging time was 10h.

[0090] (4) Pre-freezing

[0091] Place the semi-finished product in step (3) in a freezing environment for pre-freezing, the pre-freezing temperature is -20° C., and the time is 10 h.

[0092] (5) freeze-...

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Abstract

The invention relates to a plant polysaccharide aerogel air purification material, which is mainly prepared from konjac glucomannan, gelatin, starch and plant straw as raw materials by a sol-gel and freeze-drying method, and the surface hydrophobic treatment is performed to increase water resistance. The prepared aerogel has low density, high porosity, and high filtration efficiency for PM2.5.

Description

technical field [0001] The invention belongs to the field of materials and environmental protection, and more specifically relates to a plant polysaccharide airgel air purification material, and also relates to a preparation method of the plant polysaccharide airgel air purification material. Background technique [0002] The rapid development of modern social economy has caused the pollution and deterioration of the air environment, and some new materials are urgently needed to solve these problems. The emergence and application of airgel materials provide a solution to air pollution. Compared with traditional technologies, airgel adsorbents have many advantages, such as little or no adsorption loss, low waste disposal costs, and high efficiency. and reuse etc. Aerogel, also known as xerogel, is a highly dispersed solid material with a nanoporous network structure composed of colloidal particles or polymer molecules, and filled with gaseous dispersion media in the pores. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J7/12C08L89/00C08L3/02C08L5/02C08L97/02C08K3/26C08K3/36C08K3/22C08K3/34B01D53/02B01D49/00
CPCB01D49/00B01D53/02B01D2257/708B01D2258/06C08J7/12C08J9/28C08J2303/02C08J2389/00C08J2397/02C08J2403/02C08J2405/02C08J2489/00C08J2497/02C08K2201/011C08L3/02C08L89/00C08L97/02C08L2203/14C08L2205/035C08L2205/16C08L5/02C08K2003/265C08K3/36C08K2003/2227C08K3/346C08K3/00
Inventor 姜发堂陈茜肖满
Owner WUHAN LICHENG BIOTECH
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