http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109265687-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-398 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-398 |
| filingDate | 2018-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109265687-B |
| titleOfInvention | Preparation method of polycarbosilane containing heterogeneous elements |
| abstract | The invention discloses a preparation method of polycarbosilane containing heterogeneous elements. The method comprises the steps of taking liquid low-molecular-weight poly-silicon carbosilane and halide or organic complex containing heterogeneous elements as raw materials, placing the raw materials in a high-temperature high-pressure reaction device, vacuumizing and sealing the reaction device under the condition of an alkali metal silicon-aluminum compound catalyst, heating the reaction device to 350-450 ℃, carrying out closed reaction, cooling the reaction device to room temperature after the reaction is finished, and discharging gas in the reaction system to obtain a crude product containing the heterogeneous elements, namely the poly-silicon carbosilane. The method can shorten the reaction time and improve the preparation efficiency, and the prepared precursor has less branching and cyclic structure and higher Si-H content, thereby being beneficial to the improvement of the spinnability of the precursor and the control of the oxygen content and the structure in the ceramic process. |
| priorityDate | 2018-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.