http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113818098-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F11-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F11-08 |
| filingDate | 2021-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113818098-B |
| titleOfInvention | A kind of atmospheric drying preparation method and application of polyimide aerogel product |
| abstract | An atmospheric drying preparation method and application of a polyimide aerogel product. The method includes: copolymerizing diamine containing carboxyl or hydroxyl group and other diamines with dibasic acid anhydride, grafting photosensitive groups to obtain photosensitive fluorine-containing polyimide as a precursor solution, casting, scraping, 3D A polyimide aerogel product with different macroscopic structures can be obtained by forming means such as printing and spinning, through ultraviolet light irradiation, solvent replacement, and atmospheric drying. In the present invention, photosensitive groups are introduced, and the cross-linking structure is induced by light, which can effectively improve the skeleton strength of the wet gel and reduce the shrinkage caused by the surface tension caused by the solvent volatilization process. It can effectively reduce the surface tension and reduce the shrinkage rate of the product during the normal pressure drying process. The method effectively solves the problems of complex process, high cost, low efficiency and incapability of large-scale production in the existing freeze-drying and supercritical drying methods for preparing polyimide aerogel products. |
| priorityDate | 2021-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.