http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114836851-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a8ba8f44212daf3089a41cca1f8d79f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F1-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F9-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F1-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F9-24 |
| filingDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8799c27ff52d73e95bd44c58682b1b37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c97f3146695fa23272dfbeec3d133be |
| publicationDate | 2022-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114836851-A |
| titleOfInvention | A kind of preparation method of high thermal conductivity graphene/polyimide-based composite graphite fiber |
| abstract | A preparation method of a graphene/polyimide-based composite graphite fiber with high thermal conductivity belongs to the technical field of carbon fibers. Through the combined action of the dehydrating agent and the catalyst in the chemical imidization reagent, a part of the polyamic acid (PAA) is converted into polyimide (PI) on the one hand, and a planar homophthalic anhydride type and high axial orientation are prepared. On the other hand, the nitrogen of diamine is used as a nucleophile to catalyze the nucleophilic substitution reaction with the carbonyl carbon on graphene oxide (GO), so that the PAA-PI molecular chain is connected to GO through chemical bonds, fully Play the role of inducing orientation of GO. In the final heat treatment process, a great drafting tension is applied to reduce the thermal motion of molecular chains and the destruction of the original ordered structure caused by the escape of small molecules at high temperature, so that the hexagonal carbon mesh layers are tightly stacked along the fiber axis. Finally, a graphene/polyimide-based composite graphite fiber with high thermal conductivity was prepared. |
| priorityDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 88.