http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109535473-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_43b018a17f2be8e9f69a5b813d34bbb4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 |
| filingDate | 2018-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21fe04ea33789bbd9dc147ba02e9b329 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cabccdec6e10d913f1e1fd308fff7993 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_319c0390b5b9eaff5d125120cab47cca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a35e12430dfdcdb9385fdcd14d1dcac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9612c00fcce4155ddccb7e0e08c662d |
| publicationDate | 2019-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109535473-A |
| titleOfInvention | A kind of low water absorption crosslinked polyimide aeroge preparation method |
| abstract | A kind of low water absorption crosslinked polyimide aeroge preparation method, it is related to a kind of aeroge preparation method, this method prepares polyamic acid solution first, aromatic dianhydride, aromatic diamine are gradually dissolved in intensive polar solvent according to molar ratio for 1.00 ~ 1.50:1, it is reacted at room temperature 5-8 hours in nitrogen atmosphere, obtains polyamic acid solution；Secondly the polyimides wet gel of preparation crosslinking, adamantane crosslinker is added into polyamic acid solution, the polyimides wet gel being crosslinked；The methods of third step, polyimides wet gel are dried, and normal pressure spontaneously dries and heat de-airing is dry drying can prepare low water absorption crosslinked polyimide aeroge；Products obtained therefrom water absorption rate low (1% ~ 20%), dielectric constant low (2.8 ~ 2.4), thermal stability are good (450 DEG C of thermal decomposition or more).The aeroge of low water absorption can be used for the field more demanding to steam such as aviation, ship, electronic equipment, have broad application prospects. |
| priorityDate | 2018-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.