http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113248741-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_336395ab3f4913ffb77112e86279e1cb |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2375-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-14 |
| filingDate | 2021-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05726f4c42866019ebe56c61f247bf39 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb1144879f288b1b5e8f6df0b2fa4959 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_961fc8d5b6335c060903b82fb17b160d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_843cf1d262eb9f7df23b97788bf35a99 |
| publicationDate | 2021-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113248741-A |
| titleOfInvention | A kind of preparation method of cross-linked shape memory polyurethane |
| abstract | The invention discloses a preparation method of a cross-linked shape memory polyurethane, and relates to the technical field of shape memory polymers. The preparation method of the cross-linked shape memory polyurethane includes the following steps: S10, dissolving the polyester polyurethane in a first organic solvent to obtain a polyester polyurethane solution; S20, adding an initiator to the polyester polyurethane solution and mixing uniformly, drying to remove the first organic solvent, and then reacting at 80-120° C. for 0.5-2 hours to obtain a cross-linked shape memory polyurethane. By heating the initiator to generate free radicals, the free radicals will capture hydrogen on the molecular chain of polyester polyurethane, so that new free radicals are generated on the molecular chain of polyester polyurethane. In this way, different molecules of polyester polyurethane The free radicals on the chain combine with each other to form chemical cross-linking bonds, thereby preparing a cross-linked shape memory polyurethane with a shape fixation rate of more than 95% and a shape recovery rate of more than 97%. |
| priorityDate | 2021-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.