Attapulgite modification based PP (polypropylene) melt-blown filter cartridge and preparation method thereof

The technology of melt-blown filter element and attapulgite is applied in the field of PP melt-blown filter element modified based on attapulgite and its preparation, which can solve the problems of restricting the development of PP filter element, filtering liquid pollution, breeding microorganisms, etc.

Inactive Publication Date: 2017-01-11
WUHU CHENGDELONG FILTER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing PP filter element has an excellent filtering effect, after the PP filter element is used, a dirt layer will be formed on its surface. At the s

Method used

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  • Attapulgite modification based PP (polypropylene) melt-blown filter cartridge and preparation method thereof

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preparation example Construction

[0017] The invention provides a method for preparing a PP melt-blown filter element modified based on attapulgite, comprising:

[0018] 1) spraying the polymer coating on the surface of attapulgite, then drying, soaking in dilute sulfuric acid solution, and filtering to obtain activated attapulgite;

[0019] 2) spray silver nitrate solution and hydrazine sulfate solution on the surface of activated attapulgite at the same time, and let it stand to prepare silver-modified attapulgite;

[0020] 3) decocting and filtering the Chinese herbal medicine in water to obtain the Chinese herbal medicine extract and the Chinese herbal medicine filter cake;

[0021] 4) In the presence of protective gas, place the silver-modified attapulgite at 240-255°C for calcination for 25-40 minutes, then place the calcined product in Chinese herbal medicine extract for impregnation and filtration to obtain Chinese herbal medicine-modified attapulgite earth;

[0022] 5) PP (polypropylene), AES (acryl...

Embodiment 1

[0041] 1) Polymer coating (containing polyvinyl alcohol, 1.2% by weight of p-aminophenol platinum, 0.7% by weight of palladium (II)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ) sprayed on the surface of attapulgite, then dried at 125°C for 6h, soaked in 50°C and 18% by weight dilute sulfuric acid solution for 2h, and filtered to obtain activated attapulgite, wherein attapulgite, polymer The weight ratio of paint and dilute sulfuric acid solution is 100:4:200;

[0042] 2) Spray 5% by weight of silver nitrate solution and 2.5% by weight of hydrazine sulfate solution on the surface of activated attapulgite at the same time, and let it stand at 30° C. for 5 hours to obtain silver-modified attapulgite, wherein activated attapulgite, The weight ratio of silver nitrate solution and hydrazine sulfate solution is 100:7:11;

[0043] 3) Mix lemongrass, scallion, licorice, mulberry leaves, forsythia, golden boil grass, red peony, red euphorbia, Magnolia officinalis and water according...

Embodiment 2

[0047] 1) Polymer coating (containing polyvinyl alcohol, 0.8% by weight of p-aminophenol platinum, 0.2% by weight of palladium (II)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ) sprayed on the surface of attapulgite, then dried at 120°C for 5h, placed in 45°C and 15% by weight of dilute sulfuric acid solution for 1h soaking, and filtered to obtain activated attapulgite, wherein attapulgite, polymer The weight ratio of paint and dilute sulfuric acid solution is 100:3:150;

[0048] 2) Spray 4% by weight of silver nitrate solution and 2% by weight of hydrazine sulfate solution on the surface of activated attapulgite at the same time, and let it stand at 25° C. for 4 hours to obtain silver-modified attapulgite, wherein activated attapulgite, The weight ratio of silver nitrate solution and hydrazine sulfate solution is 100:5:10;

[0049] 3) Mix lemongrass, scallion, licorice, mulberry leaves, forsythia, golden boiling grass, red peony, red euphorbia, magnolia officinalis and wat...

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Abstract

The invention discloses an attapulgite modification based PP (polypropylene) melt-blown filter cartridge and a preparation method thereof. The method includes: 1) coating the surface of attapulgite with polymer paint, drying, soaking in dilute sulphuric acid, and filtering to obtain activated attapulgite; 2) simultaneously spraying silver nitrate solution and hydrazine sulfate solution to the surface of attapulgite, and standing to obtain silver modified attapulgite; 3) decocting Chinese herbal medicines in water, and filtering to obtain Chinese herbal medicine extract liquor and a Chinese herbal medicine filter cake; 4) in existence of shielding gas, calcining the silver modified attapulgite, impregnating calcination products in the Chinese herbal medicine extract liquor, and filtering to obtain Chinese herbal medicine modified attapulgite; 5) mixing PP, AES, methyl methacrylate, alkyl glycoside, paraffin, polyhexamethyl guanidine phosphate, expanded vermiculite, D-glyceraldehyde, maltose, chloroplatinic acid, the Chinese herbal medicine modified attapulgite and the Chinese herbal medicine filter cake, and performing melt blowing to obtain the PP melt-blown filter cartridge. The PP melt-blown filter cartridge has excellent filtration and antibacterial effects.

Description

technical field [0001] The invention relates to a filter core, in particular to a PP melt-blown filter core modified based on attapulgite and a preparation method thereof. Background technique [0002] The filter element is a filter device and the core component of the filter. Filter elements are mainly used in the following fields: electronics industry: pre-filtration of reverse osmosis water system, pre-filtration of deionized water system; food industry: filtration of beverage, beer, mineral water, etc.; chemical industry: filtration of organic solvents, ink, etc.; pharmaceutical industry: Filtration of pharmaceuticals, biological and plasma products, compressed air and gas filtration; others: filtration of electroplating solutions, metal cutting fluids, photosensitive resists and magnetic media, etc. [0003] According to the manufacturing process, there are mainly two types of filter elements: PP filter element and wire wound filter element; among them, PP filter eleme...

Claims

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Application Information

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IPC IPC(8): B01D39/14
CPCB01D39/14B01D2239/0442B01D2239/10
Inventor 胡德华
Owner WUHU CHENGDELONG FILTER EQUIP CO LTD
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