http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110917894-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 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/B01D69-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 |
| filingDate | 2019-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110917894-B |
| titleOfInvention | Preparation method of polyvinylidene fluoride hollow fiber porous membrane |
| abstract | The invention provides a preparation method of a polyvinylidene fluoride hollow fiber porous membrane, which comprises the following steps: 1) the following components are prepared according to the weight ratio: 25-65% of polyvinylidene fluoride resin, 10-60% of organic pore-forming agent, 10-50% of modified MOF material and 0-5% of additive; 2) mixing the modified MOF material with an ethanol solution of an organic pore-forming agent according to the weight ratio, adding polyvinylidene fluoride resin and an additive, and uniformly mixing; drying to remove ethanol to obtain mixed powder for casting film; 3) melting and extruding the mixed powder, cooling the mixed powder in a coagulating bath, and then stretching and heat setting the mixed powder; 4) and extracting to remove the organic pore-forming agent to prepare the polyvinylidene fluoride hollow fiber porous membrane. The method is simple and effective, the three wastes are less generated in the membrane preparation process, and the prepared PVDF hollow fiber porous membrane has excellent performance and uniform pore size distribution. |
| priorityDate | 2019-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.