Unlock instant, AI-driven research and patent intelligence for your innovation.
Ultrafilter membrane and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of ultrafiltration membrane and membrane casting liquid, which is applied in the field of ultrafiltration membrane, can solve the problems that need to be improved, and achieve the effect of good performance
Active Publication Date: 2020-03-27
CHINA LUCKY FILM CORP
View PDF5 Cites 8 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] However, the current ultrafiltration membranes and preparation methods still need to be improved.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0046] (1) Dissolving polyethersulfone and polyethylene glycol with a molecular weight of 300 in N,N-dimethylacetamide to obtain a casting solution. Based on the total mass of the casting solution, the content of polyethersulfone is 20%, and the content of polyethylene glycol is 3%.
[0047] (2) Drop titanium tetrachloride into the casting solution while stirring, stir evenly, and then statically defoam for 24 hours to obtain the modified casting solution. Based on the total mass of the modified casting solution, the content of titanium tetrachloride is 2%.
[0048] (3) Stick the non-woven fabric on the hollow glass with tape, pour the modified casting solution on the non-woven fabric, scrape the modified casting solution evenly with a light stick, put it into the coagulation bath after standing for a period of time The mesophase is transformed into a membrane, and after 10 minutes, the membrane is taken out and soaked in pure water for 24 hours to obtain an ultrafiltration m...
Embodiment 2
[0050] (1) Dissolving polysulfone and K30 in N,N-dimethylacetamide to obtain a casting solution. Based on the total mass of the casting solution, the content of polysulfone is 18%, and the content of K30 is 5%.
[0051] (2) Drop titanium tetrachloride into the casting solution while stirring, stir evenly, and then statically defoam for 24 hours to obtain the modified casting solution. Based on the total mass of the modified casting solution, the content of titanium tetrachloride is 2%.
[0052] (3) Stick the non-woven fabric on the hollow glass with tape, pour the modified casting solution on the non-woven fabric, scrape the modified casting solution evenly with a light stick, put it into the coagulation bath after standing for a period of time The mesophase is transformed into a membrane, and after 10 minutes, the membrane is taken out and soaked in pure water for 24 hours to obtain an ultrafiltration membrane. The coagulation bath is pure water.
[0055] (2) Drop titanium tetrachloride into the casting solution while stirring, stir evenly, and then statically defoam for 24 hours to obtain the modified casting solution. Based on the total mass of the modified casting solution, the content of titanium tetrachloride is 4%.
[0056] (3) Stick the non-woven fabric on the hollow glass with tape, pour the modified casting solution on the non-woven fabric, scrape the modified casting solution evenly with a light stick, put it into the coagulation bath after standing for a period of time The mesophase is transformed into a membrane, and after 10 minutes, the membrane is taken out and soaked in pure water for 24 hours to obtain an ultrafiltration membrane. The coagulation bath is pure water.
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
Login to View More
Abstract
The invention discloses an ultrafilter membrane and a preparation method thereof. The preparation method comprises following steps: (1) dissolving a high molecular polymer and a pore forming agent inan organic solvent to obtain a casting solution; (2) adding a titanium containing hydrophilic modifier into the casting solution, and stirring and de-foaming to obtain a modified casting solution, wherein the titanium containing hydrophilic modifier accounts for 1 to 5% of the total weight of the modified casting solution; and (3) painting the modified casting solution on nonwoven cloth, and soaking the processed nonwoven cloth in a coagulating bath to obtain the ultrafilter membrane. The preparation method has at least one of following advantages: (1) the prepared ultrafilter membrane has a strong hydrophilic property, a high antibacterial performance, a good anti-contamination property, high thermal stability, an excellent corrosion resistant performance, high photocatalytic activity, and a high flux; (2) solved is the problem that in a conventional ultrafilter membrane that takes titanium dioxide as an additive, titanium dioxide is lost due to the erosion of water flow; and (3) theoperation is simple, the energy consumption is low, and the preparation method is suitable for industrial production.
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More