http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110201559-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-24 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08 |
| 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/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 |
| filingDate | 2019-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110201559-B |
| titleOfInvention | Large-flux reinforced hollow fiber membrane and preparation method thereof |
| abstract | The invention relates to a large-flux reinforced hollow fiber membrane, wherein a separation membrane layer consists of the following components in parts by weight: 22-30 parts of polyvinylidene fluoride, 10-20 parts of hydrophilic agent, 50-60 parts of polar solvent, 10-20 parts of pore-foaming agent and 5-10 parts of auxiliary agent, wherein the hydrophilic agent comprises triethanolamine. According to the invention, the hydrophilic agent, the auxiliary agent and the polyvinylidene fluoride are blended and modified in the presence of a polar solvent, so that the surface tension of the membrane surface and the surface tension of the inner wall of a membrane hole are reduced, the hydrophilicity of the polyvinylidene fluoride is improved, the triethanolamine in the hydrophilic agent can generate a hydrogen bond effect with a polar bond in the auxiliary agent, so that the hydrophilicity can be maintained for a long time, the pollution resistance of the hollow fiber membrane is improved, and the higher running flux is kept persistently, meanwhile, the redundant triethanolamine in the membrane casting solution can be adsorbed on the surface of the hollow fiber material by the hydrogen bond acting force, so that the adhesion strength of the separation membrane layer and the hollow fiber is enhanced, and the hollow fiber is increased to serve as a support, so that the phenomenon of filament breakage of the membrane material can be avoided. |
| priorityDate | 2019-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.