http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110042488-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F2-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F2-02 |
| filingDate | 2019-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110042488-B |
| titleOfInvention | Low-cost, green and efficient preparation method of high-strength cellulose filaments |
| abstract | The invention discloses a preparation method of high-strength cellulose filaments with low cost, greenness and high efficiency. The solvent prepared by optimizing the ratio of sodium hydroxide/urea/zinc oxide is pre-cooled to-20 to-8 ℃, and can quickly dissolve high-ratio cellulose. Spinning 4-10% cellulose solution by adopting a wet spinning method, regenerating and solidifying in a mixed solution of citric acid, sodium citrate, ethylene glycol and water (the concentration is preferably 5-35%, 2-20%, 5-60% and 10-70% respectively), and the temperature of a solidifying bath is preferably 0-25 ℃. And carrying out primary stretching orientation, water washing and drying to obtain the regenerated cellulose filaments. The solvent and the coagulating bath selected by the method have low cost, and the prepared cellulose filaments are constructed by nano fibers and have excellent mechanical properties; the cellulose solubility is higher after the solvent composition proportion is optimized, and the production efficiency is also obviously improved; the production process is simple, safe and pollution-free, and is a green process for producing pure cellulose filaments. The method is expected to replace the existing industrialized spinning process. |
| priorityDate | 2019-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.