http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110204723-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2381-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-0502 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0209 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L81-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0209 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254 |
| filingDate | 2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110204723-B |
| titleOfInvention | Preparation method of heat-resistant polyphenylene sulfide |
| abstract | The invention provides a preparation method of hollow spherical heat-resistant polyphenylene sulfide, which comprises the steps of firstly carrying out high-temperature oxygen-isolation treatment on sodium sulfide nonahydrate to obtain anhydrous sodium sulfide, then taking potassium carbonate, sodium carbonate and lithium chloride as a combined catalyst, uniformly mixing the anhydrous sodium sulfide with the prepared anhydrous sodium sulfide solution, adjusting the pH of the solution to be = 9-10 by using sodium hydroxide, then heating to 220-225 ℃ under the protection of nitrogen, and carrying out constant-temperature reaction for 6-8 h; and washing, filtering and drying to obtain the hollow spherical polyphenylene sulfide. Tests prove that the hollow spherical polyphenylene sulfide has the melting point of 297 ℃, has good heat resistance, has larger specific surface area, and can be more compatible with other substances, so that various groups (inorganic macromolecules/metal oxides and the like) can be easily introduced into a hollow shell, and the hollow spherical polyphenylene sulfide is used for preparing polyphenylene sulfide composite materials modified by various groups. |
| priorityDate | 2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.