http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114274484-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1df3da3643087c86c591f7c6af26800e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C55-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-417 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-0525 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-40 |
| filingDate | 2021-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f48430b0077f4aae996979b242e0b079 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_257047dde09c7eac6db2bf9328228a92 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00cb77a44ce948794ec7af1bc48ad0ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c181207de87f94ebc6d34a825fa229b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce110cf6569b46269cf7f8a0742b2ca3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53ed5680ccf06894e4f9727e31b638d0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f66517cc0102cd0791779cfea6540cb0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf27a8717893b3e80f022cd86139df37 |
| publicationDate | 2022-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114274484-A |
| titleOfInvention | Polyethylene microporous membrane, preparation method thereof and lithium ion battery |
| abstract | The invention provides a polyethylene microporous membrane, a preparation method thereof and a lithium ion battery, wherein the preparation method of the polyethylene microporous membrane comprises the following steps: (1) carrying out melt extrusion on polyethylene resin and paraffin oil to obtain a melt; (2) casting the melt into slabs; (3) longitudinally drawing and stretching the resin sheet to obtain a longitudinally drawn film; (4) carrying out first transverse stretching on the longitudinally-stretched membrane so as to obtain a stretched oil film; (5) extracting the stretched oil film to remove the paraffin oil in the stretched oil film, and removing an extracting agent to form a microporous film; (6) carrying out secondary transverse stretching on the microporous membrane, wherein the temperature of the secondary transverse stretching is 115-135 ℃, and the magnification of the secondary transverse stretching is 1.1-1.8 times; (7) and (4) performing heat setting on the film subjected to the second transverse stretching. Therefore, the flexibility of the polyethylene microporous membrane has controllability, and the permeability and the membrane resistance of the polyethylene microporous membrane are further improved. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115674628-A |
| priorityDate | 2021-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419491870 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID28486 |
Total number of triples: 27.