Unlock instant, AI-driven research and patent intelligence for your innovation.

Antibacterial ultrafiltration membrane or microfiltration membrane

A technology of ultrafiltration membrane and microfiltration membrane, applied in ultrafiltration, membrane technology, semi-permeable membrane separation, etc., can solve the problems of lack of lasting antibacterial, loss of antibacterial efficacy, easy to be washed away by water, etc., and achieve antibacterial performance Reliable, non-toxic and side effects, the effect of solving the problem of microbial contamination

Inactive Publication Date: 2013-10-30
INST OF CHEM CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since most of the organic antibacterial agents can be dissolved in the solvent in the casting solution, and have low solubility in water, they will be enriched on the surface of the film due to phase transfer when they are in contact with the coagulation bath. There is no chemical interaction between them and they are connected together, so they are easily washed away by water
In this way, when the membrane is washed by the water body for a long time, the organic antibacterial agent on the surface will be taken away by the water, and the antibacterial effect will be gradually lost, and the long-lasting antibacterial effect will not be achieved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antibacterial ultrafiltration membrane or microfiltration membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Dissolve PS (Solvoy, Belgium) and PVP (Shanghai Vinone Material Technology Co., Ltd.) with a K value of 30 in DMAC (Samsung, Korea) under stirring, and then add OIT (Boya, Shijiazhuang) Xinyi Technology Co., Ltd.) and DCP (Sunshine International Industry Group Co., Ltd.); under the condition of 60 °C and nitrogen protection, the casting solution was continuously stirred for 1 hour to obtain the casting solution, and then left to defoam for 24 hours; wherein: the casting solution The mass percentage concentration of PS is 14%, the mass percentage concentration of PVP with a K value of 30 is 7%, the mass percentage concentration of OIT is 0.5%, the mass percentage concentration of DCP is 0.1%, and the mass percentage concentration of DMAC is 78.4%. ;

[0044] (2) after step (1) is prepared and obtained by filtering the casting solution to remove impurities, press nitrogen with a pressure of 0.15MPa into the outer cavity of the die for preparing the hollow fiber membra...

Embodiment 2

[0046] (1) Under stirring, PES (Belgian solvoy company), PVP (Shanghai Vetone Material Technology Co., Ltd.) with a K value of 90 were dissolved in DMAC (Korean Samsung Company) and mixed, and then captan (Shijiazhuang City Boya Xinyi Technology Co., Ltd.), nano-zeolite zinc-loaded antimicrobial agent (Haier Kehua Company) and DCP (Sunshine International Industry Group Co., Ltd.); keep stirring for 1 hour at a temperature of 70 ° C and nitrogen protection conditions to obtain the casting solution , then stand for defoaming for 24 hours; wherein: the mass percent concentration of PES in the casting solution is 16%, the mass percent concentration of PVP with a K value of 90 is 10%, the mass percent concentration of captan is 0.1%, The mass percentage concentration of nano-zeolite zinc-loaded antibacterial agent is 1%, the mass percentage concentration of DCP is 0.01%, and the mass percentage concentration of DMAC is 72.89%;

[0047] (2) After filtering the casting solution prepa...

Embodiment 3

[0049](1) Under stirring, dissolve PPS (Belgian Solvoy Company), PVP with a K value of 17 (Shanghai Vinone Material Technology Co., Ltd.), and PEG-1000 (Jiangsu Southeast Petrochemical Co., Ltd.) in DMF (Korea Samsung Company) respectively. ) and mixed, then add carbendazim (Ningbo Sinochem Chemicals Co., Ltd.), nano-zinc oxide (Zhejiang Mingri Nano Materials Co., Ltd.) and BPO (Jiangsu Taizhou Yuanda Chemical Raw Materials Co., Ltd.); at a temperature of 50 ° C and Continue stirring for 1 hour under the condition of nitrogen protection to obtain the casting solution, and then stand for defoaming for 18 hours; wherein: the mass percent concentration of PPS in the casting solution is 10%, and the mass percent concentration of PVP with a K value of 17 is 2%. , The mass percentage concentration of PEG-1000 is 3%, the mass percentage concentration of carbendazim is 0.7%, the mass percentage concentration of nano-zinc oxide is 0.5%, the mass percentage concentration of BPO is 0.2%, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of ultrafiltration membranes and microfiltration membranes for water treatment, and specially relates to an antibacterial ultrafiltration membrane or a microfiltration membrane. In the invention, an organic antibacterial agent or an organic and inorganic composite antibacterial agent is adopted, wherein the organic antibacterial agent or the organic and inorganic composite antibacterial agent does not influence ultrafiltration membrane or microfiltration membrane basic performances. Active ingredients of the organic antibacterial agent or the organic and inorganic composite antibacterial agent are connected with a high-molecular material composing an ultrafiltration membrane or a microfiltration membrane to form an antibacterial ultrafiltration membrane or a microfiltration membrane which has excellent antibacterial performances and can keep antibacterial effectiveness for a long time. The antibacterial ultrafiltration membrane or a microfiltration membrane prepared by the invention has the characteristics of reliable antibacterial performances, broad antimicrobial spectrum, long antimicrobial available period, no toxic and side effects and the like, thus is especially suitable for various water filtration environments and can solve effectively the existing problems produced in use of an ultrafiltration membrane or a microfiltration membrane.

Description

technical field [0001] The invention belongs to an ultrafiltration membrane and a microfiltration membrane used for water treatment, in particular to an antibacterial ultrafiltration membrane or a microfiltration membrane. Background technique [0002] Membrane separation technology appeared in the 1950s. With the advantages of high separation efficiency, low energy consumption and simple operation, it has been used in electric power, metallurgy, petroleum and petrochemical, medicine, food, water source treatment, municipal engineering, sewage reuse and seawater desalination, etc. The field has been widely used and made great progress; especially in the development and application of industrial wastewater treatment, municipal sewage treatment and related reuse technologies, ultrafiltration membrane and microfiltration membrane water treatment technology has undoubtedly become an important the power of. Large-scale water treatment typically focuses on the following: potable ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/12B01D61/14C02F1/44
CPCY02W10/37
Inventor 叶钢李兰刘必前
Owner INST OF CHEM CHINESE ACAD OF SCI