http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112354379-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ef7b4ec690881b7dac8d8a9ba7fd0489 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-441 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0002 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 |
| filingDate | 2020-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_beed1cf49b699bf6813db6ac85ad3a71 |
| publicationDate | 2021-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112354379-A |
| titleOfInvention | A kind of preparation method of polytetrafluoroethylene reverse osmosis membrane with durable and stable filtration separation performance |
| abstract | The invention relates to the technical field of reverse osmosis, and discloses a preparation method of a polytetrafluoroethylene reverse osmosis membrane with durable and stable filtration and separation performance. The following steps: (1) combining carboxymethyl chitosan on a polytetrafluorovinyl film to obtain a polytetrafluorovinyl film a; (2) depositing bound silica on the polytetrafluorovinyl film a to obtain a Polytetrafluoroethylene film b; (3) Immerse the polytetrafluoroethylene film b in deionized water, add ammonia water and copper sulfate solution, and heat preservation reaction to obtain a polytetrafluoroethylene film c; (4) Dip the polytetrafluoroethylene film The base film c is immersed in an aqueous dopamine solution for reaction to obtain a polytetrafluoroethylene film d; (5) the polytetrafluoroethylene film d is first immersed in an aqueous m-phenylenediamine solution, taken out and then placed in trimesite The interfacial polymerization reaction is carried out in the organic phase solution of the acid chloride, and then it is dried in an oven to obtain it. The reverse osmosis membrane of the invention has excellent and stable filtration performance for sodium salt, and prolongs the service life of the reverse osmosis membrane. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113069938-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114805918-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114805918-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113069938-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115197459-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115197459-B |
| priorityDate | 2020-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.