http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107555997-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F9-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-571 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-622 |
| filingDate | 2017-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107555997-B |
| titleOfInvention | Preparation method of beryllium-containing polycarbosilane ceramic precursor |
| abstract | The invention relates to a preparation method of a beryllium-containing polycarbosilane ceramic precursor. The invention adds organic polymer containing silicon and organic metal compound of beryllium into a reaction kettle, the reaction kettle comprises a cracking device, a condenser, a reflux device and a reaction chamber; under the protective atmosphere, heating to a temperature A of the reaction chamber and a temperature B of the cracking device; the value of B is greater than that of A; obtaining a PBCS crude product through reaction; the value of B is larger than that of A, the value range of A is 350-500 ℃, the value range of B is 450-580 ℃, and B-A is not less than 50 ℃; reacting for at least 0.5h at a set temperature; then obtaining a finished product. The preparation process is reasonable, and the obtained product has excellent performance and is convenient for large-scale industrial application. |
| priorityDate | 2017-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.