http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109836610-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-143 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L77-10 |
| filingDate | 2019-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109836610-B |
| titleOfInvention | Method for recycling aramid fiber from aramid fiber phenolic resin composite material |
| abstract | The invention provides a method for recovering aramid fibers from aramid fiber/phenolic resin composite material wastes, and belongs to the technical field of aramid fiber recovery methods. The method for recycling the aramid fiber comprises the following steps: placing the aramid fiber/phenolic resin composite material in a mixed recovery solution, and placing the solution in a sealed reaction kettle; reacting for 6-12 h in an environment with the temperature of 150-200 ℃ and the gas phase partial pressure of 2-4 MPa; and cleaning the reacted product to obtain the recovered aramid fiber. The method adopts phosphoric acid and glacial acetic acid as the mixed recovery solvent, improves the degradation capability of the mixed recovery solvent on the phenolic resin, avoids the great reduction of various performances of the aramid fiber under other recovery solvents and recovery conditions, and is easy to disperse into single fibers in subsequent processing. The method has the advantages of high aramid fiber recovery rate, small loss degree of various properties, simple operation process and suitability for industrial production. |
| priorityDate | 2019-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.