http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106883431-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/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071 |
| 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 | 2017-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106883431-B |
| titleOfInvention | Preparation method of low-water-absorptivity polyimide film |
| abstract | The invention discloses a preparation method of a low-water-absorptivity polyimide film, wherein N is 2 Under the protection of (1), mixing a diamine monomer A and a dianhydride monomer A in a polar solvent to obtain a flexible polyamic acid resin solution A; in N 2 Under the protection of (1), mixing a diamine monomer B and a dianhydride monomer B in a polar solvent to obtain a rigid polyamic acid resin solution B; in N 2 Under the protection of (1), blending the flexible polyamic acid resin solution A and the rigid polyamic acid resin solution B, stirring, stopping the reaction when the viscosity of the reactant reaches 2000-3500 poise, finally adding an accelerator and a dehydrating agent, uniformly mixing, casting to form a film, and carrying out imidization treatment to obtain the low-water-absorptivity polyimide film. The water absorption of the polyimide film prepared by the preparation method is lower than 1.2 percent and far lower than that of the traditional polyimide by 2.3 to 2.4 percent, and simultaneously, the excellent comprehensive properties of mechanical, electrical and the like are kept. |
| priorityDate | 2017-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.