http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109867771-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-199 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate | 2019-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109867771-B |
| titleOfInvention | Preparation method of low-extraction high-temperature-resistant insulating polyester film |
| abstract | The invention discloses a preparation method of a low-extraction high-temperature-resistant insulating polyester film, which comprises the following steps: (1) preparing polyester; (2) extruding and slicing: melt-extruding and slicing the product obtained in the step (1) by using a double-screw extruder; (3) solid-phase tackifying: thickening by using a solid phase thickener until the intrinsic viscosity of the polyester chip reaches 0.7-1.3 dL/g; (4) melt extrusion and sheet casting: pre-crystallizing and drying polyester chips and proper amount of auxiliary materials, and performing melt extrusion and sheet casting; (5) and (3) biaxial tension film forming: and drawing and rolling the cast sheet after longitudinal stretching and transverse stretching to obtain the insulating polyester film. Wherein the catalyst adopted in the polycondensation of the step (1) is a complex formed by metal titanium and ligand bis (diphenylphosphinoethyl) amine. The invention adopts specific raw material formula and production process, and the prepared insulating polyester film has the advantages of low extract and high heat resistance, and is particularly suitable for insulating polyester films for motors and motors. |
| priorityDate | 2019-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.