http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108424532-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2201-011 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2333-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2003-2275 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2201-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-346 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-075 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F120-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-075 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F120-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 |
| filingDate | 2018-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108424532-B |
| titleOfInvention | Preparation method of magnetic hydrogel with high strength and high fracture toughness |
| abstract | The invention provides a preparation method of magnetic hydrogel with high strength and high fracture toughness, wherein divalent and trivalent iron ions enter a three-dimensional polymer network of poly (N, N-dimethylacrylamide) nano composite hydrogel through the permeation diffusion effect, and then the divalent and trivalent iron ions are subjected to in-situ generation of ferroferric oxide magnetic particles through a sodium hydroxide coprecipitation method, and the magnetic particles are precipitated on the three-dimensional polymer network of the hydrogel in situ and are uniformly distributed; in a high-concentration sodium hydroxide solution, the poly N, N-dimethylacrylamide nano composite hydrogel can undergo volume phase change, so that the strength and fracture toughness of the magnetic hydrogel are greatly improved; the method can be popularized to different types of hydrogel, and is a universal preparation method of the magnetic hydrogel with high strength and high fracture toughness; the magnetic hydrogel prepared by the method can simultaneously solve two material problems: the mechanical property is poor, the magnetic particles are not uniformly distributed, and the fracture toughness of the magnetic hydrogel is as high as 11000Jm ‑2 Is one of the strongest magnetic hydrogels in the world at present. |
| priorityDate | 2018-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.