http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110394068-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-82 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/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36 |
| filingDate | 2019-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110394068-B |
| titleOfInvention | Janus polytetrafluoroethylene hollow fiber membrane and preparation method thereof |
| abstract | The invention provides a Janus polytetrafluoroethylene hollow fiber membrane and a preparation method thereof, wherein the hollow fiber membrane is of a double-layer structure and comprises an inner surface of a hydrophilic polytetrafluoroethylene hollow fiber porous support tube membrane body and a hydrophobic polytetrafluoroethylene porous flat membrane wrapping layer arranged on the surface of the porous support tube membrane body; the instantaneous contact angle of the hydrophilic polytetrafluoroethylene hollow fiber support tube membrane body is less than 60 degrees and can be reduced to 0 degree within 20 seconds; the contact angle of the hydrophobic polytetrafluoroethylene porous flat membrane wrapping layer is larger than 130 degrees. In the preparation process of the fiber membrane, the fiber membrane is subjected to gradient infiltration from inside to outside by adopting a compound solution of water, ethanol, glycerol and polyvinyl alcohol, and the stable load of the polyvinyl alcohol in a polytetrafluoroethylene membrane body is effectively realized through the cross-linking reaction of aldehyde and the polyvinyl alcohol. The polytetrafluoroethylene hollow fiber membrane prepared by the invention macroscopically shows the characteristics of super-hydrophilicity of a membrane layer in the hollow fiber membrane and hydrophobicity of an outer membrane layer, and has excellent anti-pollution performance and high flux performance. |
| priorityDate | 2019-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.