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Antibacterial ultrafiltration membrane and preparation method thereof

A technology of ultrafiltration membrane and antibacterial agent, applied in the field of ultrafiltration membrane, can solve the problems of decreasing membrane flux and separation performance, affecting the effect of water filtration and purification, and shortening the service life of ultrafiltration membrane, so as to achieve better filtering and antibacterial effect, Not easy to fall off effect, improve the effect of polymerization

Active Publication Date: 2021-08-06
山东超滤环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of ultrafiltration membranes, with the extension of use time, it is inevitable to encounter the problem of membrane fouling
The ultrafiltration membrane will absorb microorganisms during use, and the microorganisms will multiply on the surface of the ultrafiltration membrane, resulting in a significant decrease in membrane flux and separation performance, resulting in a greatly reduced service life of the ultrafiltration membrane, and will also affect the filtration and purification of water quality Effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An antibacterial ultrafiltration membrane, comprising the following raw materials in parts by weight: 80 parts of ethylene-vinyl acetate copolymers, 5 parts of polyacrylates, 2 parts of polybutylene adipamide, 3 parts of phthalic acid alkylamides, 2 parts of triisooctyl phosphite, 3 parts of propylene glycol monolaurate, 1 part of 2-hydroxy-4-methoxybenzophenone, 2-(2'-hydroxy-5'-tert-octylphenyl ) 1 part of benzotriazole, 1 part of 4-amino-2,1,3-benzothiadiazole, 8 parts of polytetrafluoroethylene, 3 parts of capryl acetaldehyde, 4-isopropyl-2-hydroxy- 2 parts of cycloheptyl-2,4,6 trien-1-one, 0.2 parts of nano silver ion, 0.4 parts of silane coupling agent, 0.3 parts of antibacterial agent, 6 parts of organic solvent, 2 parts of leveling agent, pore forming agent 0.5 servings.

[0023] Wherein, the organic solvent is N,N-dimethylformamide.

[0024] Wherein, the antibacterial agent is o-hydroxycyclopentenedione.

[0025] In the present embodiment, the preparation me...

Embodiment 2

[0031] An antibacterial ultrafiltration membrane, comprising the following raw materials in parts by weight:

[0032] 90 parts of ethylene-vinyl acetate copolymer, 6 parts of polyacrylate, 3 parts of polybutylene adipamide, 4 parts of alkylamide phthalate, 3 parts of triisooctyl phosphite, propylene glycol monolaurate 3 parts, 1.2 parts of 2-hydroxy-4-methoxybenzophenone, 1.2 parts of 2-(2'-hydroxy-5'-tert-octylphenyl) benzotriazole, 4-amino-2,1 , 1.6 parts of 3-benzothiadiazole, 12 parts of polytetrafluoroethylene, 4.5 parts of caproylacetaldehyde, 4-isopropyl-2-hydroxy-cycloheptyl-2,4,6 trien-1-one 2.7 parts, 0.4 parts of nano-silver ions, 0.7 parts of silane coupling agent, 0.5 parts of antibacterial agent, 9 parts of organic solvent, 3.5 parts of leveling agent, and 0.8 parts of pore-forming agent.

[0033] Wherein, the organic solvent is a mixture of N,N-dimethylformamide and N-methylpyrrolidone.

[0034] Wherein, the antibacterial agent is a mixture of o-hydroxycyclope...

Embodiment 3

[0041] An antibacterial ultrafiltration membrane, comprising the following raw materials in parts by weight:

[0042] 100 parts of ethylene-vinyl acetate copolymer, 7 parts of polyacrylate, 4 parts of polybutylene adipamide, 5 parts of alkyl phthalate, 3 parts of triisooctyl phosphite, propylene glycol monolaurate 4 parts, 1.5 parts of 2-hydroxy-4-methoxybenzophenone, 1.6 parts of 2-(2'-hydroxy-5'-tert-octylphenyl) benzotriazole, 4-amino-2,1 , 1.6 parts of 3-benzothiadiazole, 11 parts of polytetrafluoroethylene, 4 parts of capryl acetaldehyde, 4-isopropyl-2-hydroxy-cycloheptyl-2,4,6 trien-1-one 2.5 parts, 0.3 parts of nano-silver ions, 0.6 parts of silane coupling agent, 0.4 parts of antibacterial agent, 8 parts of organic solvent, 3 parts of leveling agent, and 0.7 parts of pore-forming agent.

[0043] Wherein, the organic solvent is a mixture of N,N-dimethylformamide and N-methylpyrrolidone.

[0044] Wherein, the antibacterial agent is a mixture of o-hydroxycyclopentenedio...

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Abstract

The invention discloses an antibacterial ultrafiltration membrane which is prepared from the following raw materials: an ethylene-vinyl acetate copolymer, polyacrylate, polyadipamide, phthalic acid alkyl amide, triisooctyl phosphite, propylene glycol monolaurate, 2-hydroxy-4-methoxybenzophenone, 2-(2 '-hydroxy-5'-tert-octylphenyl) benzotriazole, 4-amino-2, 1, 3-benzothiadiazole, polytetrafluoroethylene, decanoyl acetaldehyde, 4-isopropyl-2-hydroxy-cycloheptyl-2, 4, 6-triene-1-ketone, nano-silver ions, a silane coupling agent, an antibacterial agent, an organic solvent, a flatting agent and a pore-forming agent. The invention also discloses a preparation method of the antibacterial ultrafiltration membrane. The nano silver ions and the antibacterial agent are used in cooperation so that the antibacterial effect of the ultrafiltration membrane is guaranteed; through the joint cooperation of various raw materials, the overall strength of the ultrafiltration membrane is improved, the thickness of a single-layer ultrafiltration membrane is thinner, and the filtering and antibacterial effects are better after multiple layers of ultrafiltration membranes are compounded.

Description

technical field [0001] The invention relates to the technical field of ultrafiltration membranes, in particular to an antibacterial ultrafiltration membrane and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, water resources have increasingly become a restrictive factor for economic development. Therefore, reducing sewage discharge and reusing wastewater has become an inevitable trend. At present, there are many methods for treating wastewater. These methods have more or less disadvantages such as low effluent quality, poor stability, and large land occupation. Utilizing membrane separation technology to regenerate wastewater is a commonly used method at this stage. Due to It has the advantages of small energy consumption, low energy consumption, low cost, simple separation device, easy operation, simple manufacture, and easy combination with other separation technologies. It is widely used in the fields of wate...

Claims

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Application Information

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IPC IPC(8): B01D61/14B01D71/80B01D69/12C08J5/18C08L23/08C08L33/04C08L77/06C08K3/08
CPCB01D61/145B01D71/80B01D69/12C08J5/18B01D2325/48C08J2323/08C08J2433/04C08J2477/06C08K2003/0806C08K2201/011
Inventor 冯雷张守健王天利
Owner 山东超滤环境科技有限公司