| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2201-011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-041
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K7-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K7-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 |
| filingDate |
2020-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2022-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-112500565-B |
| titleOfInvention |
Preparation method of functional cross-linked polyimide aerogel heat-insulating material |
| abstract |
A functionalized cross-linked polyimide aerogel thermal insulation material is prepared by taking an amidated modified nano-carbon material with a large two-dimensional length-diameter ratio as a cross-linking agent and adopting a two-step method and a sol-gel method, so that the problem of shrinkage rate of the polyimide aerogel is solved, and the thermal insulation capacity of the material is further improved. The prepared material has good stability and can be used in the fields of high-end heat insulation materials and the like. The density of the prepared functional cross-linking type polyimide aerogel is 0.052 to 0.078g/cm 3 The compression strength is 0.3-1.1MPa, the volume shrinkage is 7.22-15.63%, and the thermal conductivity is 0.0152-0.021W/(m.K). |
| priorityDate |
2020-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |