http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111804162-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ed25364954a481cb37b9ac3588fc51f3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0079 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-027 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-024 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-027 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2020-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e19bf542a8f2f004f1345964dbb26a8 |
| publicationDate | 2020-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111804162-A |
| titleOfInvention | A kind of preparation method of high flux polytetrafluoroethylene composite nanofiltration membrane |
| abstract | The invention relates to the technical field of membrane filtration, and discloses a preparation method of a high-flux polytetrafluoroethylene composite nanofiltration membrane. The method includes the following steps: S1, using sodium alginate to activate and modify the hydrophobic polytetrafluoroethylene microporous membrane to obtain a hydrophilic polytetrafluoroethylene microporous membrane; S2, using a silane coupling agent to perform surface modification treatment on the quartz glass fiber ; S3, grafting trihydroxy quaternary ammonium salt to the surface of the quartz glass fiber to obtain the modified quartz glass fiber; S4, depositing the modified quartz glass fiber on the hydrophilic polytetrafluoroethylene microporous membrane by the static adsorption method to form the fiber mesh to obtain a pretreated polytetrafluoroethylene microporous membrane; S5, coating the surface of the pretreated polytetrafluoroethylene microporous membrane with a polyethersulfone casting solution and drying to form a membrane. In the process of preparing the polytetrafluoroethylene composite nanofiltration membrane, the method can avoid the blockage of the membrane pores caused by the penetration of macromolecular organic substances through the cracks on the surface of the polytetrafluoroethylene microporous membrane, thereby improving the performance of the polytetrafluoroethylene composite nanofiltration membrane. water flux. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116589681-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116589681-A |
| priorityDate | 2020-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.