http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108211808-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0013 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 |
| filingDate | 2017-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108211808-B |
| titleOfInvention | Food-grade polyvinylidene fluoride membrane and manufacturing method thereof |
| abstract | The invention relates to the technical field of water treatment, and particularly relates to and discloses a food-grade polyvinylidene fluoride membrane, wherein the amount of a dissolved substance contained in a liquid obtained by leaching the membrane in ultrapure water heated to 80 ℃ for 24 hours is less than or equal to 1.0 mg/m 2 The mass water content of the film is less than or equal to 10 percent. The invention also discloses the food-grade polyvinylidene fluoride membrane: (1) preparing uniform polyvinylidene fluoride liquid (2), performing mold forming (3), entering a solidification water bath through an air gap, performing water bath solidification forming (4), performing water bath extraction to remove a solvent (5) and removing a salt water bath to enable a film to adsorb a small amount of salt, and drying the film as a film hole retaining agent (6). The food-grade polyvinylidene fluoride membrane provided by the invention has the advantages of less dissolved substances, low water content, capability of maintaining higher flux, high strength, stable structure, suitability for food application, simple and controllable manufacturing method and no additional pollution. |
| priorityDate | 2017-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.