http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110280148-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-021 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0079 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 |
| filingDate | 2019-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110280148-B |
| titleOfInvention | Preparation method of polyvinylidene fluoride ultrafiltration membrane modified by hydrophilic graphene |
| abstract | A preparation method of a polyvinylidene fluoride ultrafiltration membrane modified by hydrophilic graphene belongs to the technical field of polymer separation membrane technology and water treatment application. The method comprises the following steps: freeze-drying the graphene oxide solution to prepare powder, baking at high temperature to prepare nitrogen-oxygen hybrid graphene, and dispersing the nitrogen-oxygen hybrid graphene in an organic solvent; adding a membrane material and an additive into the nitrogen-oxygen hybrid graphene dispersion liquid, swelling and stirring to obtain a membrane casting liquid, and defoaming and standing in vacuum; and scraping the casting solution on a support by using a scraper to form a solution film, immersing the support and the solution film into a coagulating bath, and precipitating and solidifying a polymer in the solution to obtain the hydrophilic graphene modified polyvinylidene fluoride ultrafiltration membrane. The addition of the modified graphene not only increases the antibacterial performance of the ultrafiltration membrane, but also has high strength, high flux and high separation precision, and the soaking of a protective solution is omitted; the raw material graphene is convenient to prepare, and the graphene modification method is simple and easy to industrially produce and apply. |
| priorityDate | 2019-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.