Antibacterial cortex phellodendri-nanosilver superfine glass fiber air filtering material

A technology of ultra-fine glass fiber and air filter material, applied in the fields of filtration and separation, deodorization, chemical instruments and methods, etc., can solve the problems of easy mass reproduction environment, secondary pollution, easy blocking, etc., and achieve high safety and efficacy. Long-lasting, pronounced bacteriostatic effect

Inactive Publication Date: 2014-05-07
GUANGDONG SECOND PROVINCIAL TRADITIONAL CHINESE MEDICINE HOSPITAL
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the filter material used in the existing high-efficiency air filter has relatively large wind resistance and is easy to block, and the microbial contamination adhered to the filter material is easy to produce drug resistance, and it is easy to reproduce in large numbers and cause secondary pollution to the environment. Invented antibacterial Phellodendron-nano-silver ultra-fine glass fiber air filter material, mixed Phellodendron extract, xanthan gum, silver nano-particles and glass fiber according to the weight ratio of 0.5:0.0005:0.0001:1, and then used melt-blown Melt-blown weaving with equipment and technology to form ultra-fine glass fiber filter materials,

Method used

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preparation example Construction

[0017] The preparation steps of described Phellodendron Phellodendri extract are as follows: take 15 grams of Chinese medicine Phellodendron Phellodendri decoction pieces, add 300ml of water, boil, concentrate and filter to obtain 150ml of concentrated filtrate, air-dry at 80°C and leave to stand to obtain solid Phellodendron Phellodendri precipitation, after drying, prepare into fine powder particles;

[0018] The preparation step of described silver elemental nanoparticle is as follows: get 22.8 g tetradecanoic acid and be dissolved in 140 mL methanol and the water that mix by 2:5 ratio, add the sodium hydroxide of 4g to precipitate in solution, filter, precipitate Adding to 100 mL concentration is 10 mol / L water-soluble silver nitrate solution to obtain silver myristate; Weigh 27.8ml concentration and be 20 mmol / L silver myristate in 100 mL beaker, add 58 Triethylamine with a concentration of 40 mmoL / L was stirred electromagnetically at 80°C for 2 hours, the white silver my...

Embodiment 1

[0024] 1. Preparation of Phellodendron Phellodendri Extract: Get 600 grams of Chinese medicine Phellodendron Phellodendri decoction pieces, add 12000ml of water, boil, concentrate and filter to obtain 6000ml of filtrate after concentration, air-dry and leave standstill under 80°C to obtain solid Phellodendron Phellodendri precipitation, and make fine powder after drying 300 grams of powder granules.

[0025] 2. Preparation of water-soluble silver nanoparticles:

[0026]2. Dissolve 22.8 g of myristic acid in 140 mL of methanol and water mixed at a ratio of 2:5, add 4 g of sodium hydroxide to the solution to precipitate a precipitate, filter, and add the precipitate to 100 mL with a concentration of 10 mol / L Obtain silver myristate in water-soluble silver nitrate solution; Weigh 27.8ml concentration and be 20mmoL / L silver myristate in the 100mL beaker, add 58mL concentration in the beaker and be the triethyl ether of 40mmoL / L Amine, electromagnetically stirred at 80°C for 2 hou...

Embodiment 2

[0029] 1. Preparation of Phellodendron Phellodendri Extract: Get 600 grams of Chinese medicine Phellodendron Phellodendri decoction pieces, add 12000ml of water, boil, concentrate and filter to obtain 6000ml of filtrate after concentration, air-dry and leave standstill under 80°C to obtain solid Phellodendron Phellodendri precipitation, and make fine powder after drying 300 grams of powder granules.

[0030] 2. Preparation of water-soluble silver nanoparticles:

[0031] 2. Dissolve 22.8 g of myristic acid in 140 mL of methanol and water mixed at a ratio of 2:5, add 4 g of sodium hydroxide to the solution to precipitate a precipitate, filter, and add the precipitate to 100 mL with a concentration of 10 mol / L Silver myristate is obtained in a water-soluble silver nitrate solution; 73.4ml of silver myristate with a concentration of 20 mmoL / L is weighed in a 100 mL beaker, and 58 mL of triethyl ether with a concentration of 40 mmoL / L is added to the beaker. Amine, electromagnetic...

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Abstract

The invention relates to an antibacterial cortex phellodendri-nanosilver superfine glass fiber air filtering material. A cortex phellodendri extract, nanosilver particles, xanthan gum and glass fibers are mixed and melt-blown, and the melt-blow woven superfine glass fiber filtering material obtained by melt-blowing and weaving has the antibacterial properties on staphylococcus aureus, Escherichia coli and other bacteria and viruses besides the air filtering performance. The material can solve problems that in a conventional antibacterial material, nanosilver and other antibacterial materials are sprayed to wrap the fiber surfaces of the air filtering material, or nanosilver and other antibacterial materials are woven to form a new air filtering mesh which covers the surface of the air filtering material to form a composite filtering layer, so that the filtering path of the air filtering material is reduced, the filtering efficiency is lowered, microorganism pollution collected on the filtering surface easily generates drug resistance and a high-efficiency air filter easily generates second environment pollution. The antibacterial cortex phellodendri-nanosilver superfine glass fiber air filtering material is applicable to an air filter in a public environment such as a hospital.

Description

[0001] technical field [0002] The invention relates to a filtering and sterilizing equipment, in particular to a cork-nano silver superfine glass fiber air filter material with antibacterial performance. Background technique [0003] In order to minimize the risk of surgical infection in modern medical care, in addition to using various disinfection equipment, a sterile room for surgery is specially built, which is a sterile space called laminar flow operating room, using air cleaning technology Filter microbial contamination to control the air cleanliness in the space environment, suitable for the environment required by various operations, and form a positive and negative pressure difference environment in the operating room, so that the air flow flows from the operating area with high cleanliness to the area with low cleanliness , A small, thin layer of airflow is conveyed in the same direction at a uniform flow rate, realizing the unidirectional flow of air in the oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20A61L9/00A61L101/56A61L101/02
Inventor 刘阳涂瑶生孙冬梅陈玉兴
Owner GUANGDONG SECOND PROVINCIAL TRADITIONAL CHINESE MEDICINE HOSPITAL
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