http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110404421-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-38 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2019-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110404421-B |
| titleOfInvention | Preparation method of Janus polyvinylidene fluoride (PVDF) separation membrane |
| abstract | A preparation method of a Janus polyvinylidene fluoride (PVDF) separation membrane relates to a preparation method of a membrane. The invention aims to solve the problem that the wettability difference of the upper surface and the lower surface of the existing Janus membrane is small, so that higher oil-water separation efficiency and pollution resistance are obtained. The method comprises the following steps: firstly, preparing a standard buffer solution; secondly, preparing a dopamine coating solution; thirdly, preparing a super-hydrophilic coating; introducing sacrificial layer liquid; fifthly, preparing a PVDF casting film solution; sixthly, preparing the Janus polyvinylidene fluoride ultrafiltration membrane to obtain the Janus polyvinylidene fluoride (PVDF) separation membrane. The invention has the following advantages: the Janus polyvinylidene fluoride (PVDF) separation membrane prepared by the invention takes a non-woven fabric material as a supporting layer, has high mechanical strength, has opposite wettabilities on the upper surface and the lower surface of the membrane, is suitable for oil-in-water emulsion separation, and has the oil-water separation efficiency of 99.99 percent and the flux recovery rate of more than 90 percent. |
| priorityDate | 2019-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.