http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110607046-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2329-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2401-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2205-026 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-0484 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-246 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B15-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B15-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L1-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L29-04 |
| filingDate | 2019-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110607046-B |
| titleOfInvention | Flame-retardant polyvinyl alcohol aerogel and preparation method thereof |
| abstract | The invention discloses a flame-retardant polyvinyl alcohol aerogel which is prepared by carrying out a cross-linking reaction on polyvinyl alcohol and phosphorylated cellulose. The preparation method comprises the following steps: s1, adding cellulose and phosphorous acid into molten urea, reacting for 4-8h at 140-180 ℃, adding water and ethanol, and separating out precipitate to obtain phosphorized cellulose; s2, ultrasonically dispersing the phosphated cellulose in water; s3, dissolving polyvinyl alcohol in water at 80-95 ℃; s4, adding a phosphorized cellulose solution into a polyvinyl alcohol aqueous solution, then adding a cross-linking agent aqueous solution, and reacting at the temperature of 60-85 ℃ for 1-4 h to prepare a polyvinyl alcohol/phosphorized cellulose cross-linked hydrogel; s5, freeze-drying the hydrogel for 24-72 hours to obtain the flame-retardant polyvinyl alcohol aerogel. The polyvinyl alcohol aerogel disclosed by the invention has excellent flame retardant property and excellent mechanical property because the phosphorized cellulose contains a large amount of P elements. |
| priorityDate | 2019-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.