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Preparation method of biodegradable high-dust-holding-capacity air filtering material

An air filter material and biodegradable technology, which is applied in the field of preparation of biodegradable high dust holding capacity air filter materials, can solve the problems of non-biodegradability and small dust holding capacity, and achieve the promotion of biodegradability and dust holding capacity , Excellent biodegradability, and the effect of improving dust holding capacity

Active Publication Date: 2017-12-22
NANXIN PHARM TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the defects of non-biodegradable and small dust-holding capacity of current air filter materials, a preparation method of biodegradable high-dust-holding air filter materials is provided

Method used

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  • Preparation method of biodegradable high-dust-holding-capacity air filtering material

Examples

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Effect test

example 1

[0023] Weigh 120g of cornstarch and 60g of buckwheat starch and mix them in a fermenter with 65mL of yogurt, seal and ferment for 7 days at a temperature of 30°C, filter to remove the filter residue, then add 80mL of sulfuric acid solution with a mass fraction of 35% and mix for 16min , which is self-made lactic acid, add 25mL absolute ethanol and 14mL hydrogen peroxide with a mass fraction of 30% to the self-made lactic acid and mix, and polycondense at 30°C for 45min, which is self-made polylactic acid, which is ready for use, and the volume ratio is 1:1. Acetic anhydride and pyridine were mixed and stirred for 10 minutes to obtain a self-made mixed solution. The above-mentioned self-made polylactic acid was poured into the self-made mixed solution and mixed for 1 hour. Press and draw, that is, self-made polylactic acid fiber, weigh 0.8kg of quartz sand, grind and pulverize for 35 minutes to obtain quartz sand powder, put the quartz sand powder in a kiln at 800°C for 1 hour, ...

example 2

[0025]Weigh 140g of cornstarch and 70g of buckwheat starch and mix them in a fermenter with 75mL of yogurt, seal and ferment at 35°C for 8 days, filter to remove the filter residue, then add 90mL of sulfuric acid solution with a mass fraction of 35% and mix for 18min , which is self-made lactic acid, add 35mL absolute ethanol and 16mL hydrogen peroxide with a mass fraction of 30% to the self-made lactic acid and mix, and polycondense at 40°C for 42min, that is, self-made polylactic acid, which is ready for use, and the volume ratio is 1:1. Acetic anhydride and pyridine were mixed and stirred for 11 minutes to obtain a self-made mixed solution. The above-mentioned self-made polylactic acid was poured into the self-made mixed solution and mixed for 1.5 hours. Extrusion and drawing, that is, self-made polylactic acid fiber, weighing 1.0kg of quartz sand, grinding and pulverizing for 50 minutes, to obtain quartz sand powder, putting the quartz sand powder in a kiln at 1000 ° C for ...

example 3

[0027] Weigh 160g of cornstarch and 80g of buckwheat starch and mix them in a fermenter with 85mL of yogurt, seal and ferment at 40°C for 9 days, filter to remove the filter residue, then add 100mL of sulfuric acid solution with a mass fraction of 35% and mix for 20min , which is self-made lactic acid, add 45mL absolute ethanol and 18mL hydrogen peroxide with a mass fraction of 30% to the self-made lactic acid and mix, and polycondense at 50°C for 60 minutes, which is self-made polylactic acid, which is ready for use, and the volume ratio is 1:1. Acetic anhydride and pyridine were mixed and stirred for 12 minutes to obtain a self-made mixed solution. The above-mentioned self-made polylactic acid was poured into the self-made mixed solution and mixed for 2 hours. Press and draw, that is, self-made polylactic acid fiber. Weigh 1.2kg of quartz sand and grind it for 65 minutes to obtain quartz sand powder. Put the quartz sand powder in a kiln at 1200°C for 2 hours to melt to obtain...

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Abstract

The invention relates to the technical field of filtering material preparation, in particular to a preparation method of a biodegradable high-dust-holding-capacity air filtering material. Acetic anhydride and pyridine are utilized to acetylate polylactic acid, so that formation of polylactic fiber is facilitated, and the polylactic acid itself has excellent biodegradability, no toxicity and no irritation. Glass fiber is modified through amber, so that binding performance of the glass fiber and the polylactic fiber is promoted, and dust tolerance of the air purifying material is improved. Cotton, dichloromethane, dimethyl formamide and sodium phosphate are added, so that improving of biodegradability and dust holding capacity of the polylactic fiber and the glass fiber is promoted. Modified activated carbon is sprayed onto the surface of an air filtering material fusion blank, so that dust holding capacity of the air filtering material is improved. As environment protection in China is enhanced, the air filtering material has become a part with fastest growth in filtering market, thereby having wide application prospect.

Description

technical field [0001] The invention relates to the technical field of filter material preparation, in particular to a method for preparing a biodegradable air filter material with high dust holding capacity. Background technique [0002] The filter material is usually made of plant fiber, synthetic fiber, inorganic fiber and other raw materials, adding appropriate amount of chemicals, and using papermaking equipment and papermaking technology. It is a loose and porous filter medium with good filtration performance. Among them, glass fiber among inorganic fibers is widely used because of its corrosion resistance, moisture resistance, heat resistance and many other advantages. Generally speaking, an air filter is a product that looks simple but technically complex. It is currently mainly used in clean rooms, buildings, hospitals, military fields, etc. With the advancement of technology, the functional requirements for high-efficiency air filters It will also get higher and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14D01F1/10D01F6/92
CPCB01D39/14D01F1/10D01F6/92
Inventor 郭舒洋杨立军张淑娴
Owner NANXIN PHARM TECH RES INST CO LTD
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