http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112062957-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1039 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate | 2020-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112062957-B |
| titleOfInvention | Self-catalytic low-dielectric polyimide material and preparation method thereof |
| abstract | The invention provides a preparation method of an autocatalytic low-dielectric polyimide material, which comprises the following steps: dissolving a diamine monomer and a dicarboxylic anhydride monomer in an organic solvent in sequence, wherein the dicarboxylic anhydride monomer is added in batches; reacting for a preset time under the atmosphere of nitrogen or argon and at room temperature to obtain a polyamic acid solution; carrying out spin coating on the polyamic acid solution to obtain a polyamic acid film; and carrying out gradient imidization treatment on the polyamic acid film within a preset temperature range to obtain the self-catalyzed low-dielectric polyimide material. According to the invention, a nitrogen-containing hexabasic aromatic heterocyclic structure is introduced into a polyimide molecular structure, and a catalysis effect is generated by utilizing the proton attracting effect of lone pair electrons of nitrogen, so that the temperature requirement in the dehydration and cyclization process of polyamic acid is reduced. According to the invention, a large amount of fluorine is introduced into polyimide, so that the dielectric constant of the material can be effectively reduced. The autocatalytic low-dielectric polyimide material prepared by the invention has the characteristics of low dielectric constant, low imidization temperature and the like. |
| priorityDate | 2020-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.