http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110760945-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F1-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F1-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-94 |
| filingDate | 2019-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110760945-B |
| titleOfInvention | Spandex fiber with good thermal stability and preparation method thereof |
| abstract | A polyurethane fiber with good thermal stability and a preparation method thereof are disclosed, the preparation method comprises the following steps: firstly, preparing polyurethane-based ionomer which is used as a nucleating agent for spandex, then adding the nucleating agent into spandex stock solution in a mode of adding functional auxiliary materials, uniformly stirring, curing, spinning by a dry method to form a spandex spinning cake, and then carrying out damp-heat treatment to prepare the spandex fiber with good thermal stability. The invention is characterized in that: (1) the nucleating agent for spandex is used for improving the crystallinity of spandex during thermal forming in a chimney and accelerating the crystallization rate of the spandex. The spandex nucleating agent is a self-made polyurethane-based ionomer, is consistent with the matrix structure of a spinning stock solution, has good compatibility, and does not influence the mechanical property of spandex; (2) after the spandex is wound into filaments, residual internal stress in the spandex is eliminated through wet-heat setting, so that the fiber size becomes more stable. |
| priorityDate | 2019-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.