摘要:
A microporous membrane comprising layers, wherein at least one layer comprises a first polymer having a Tm in the range of 115.0° C. to 130.0° C. and an Mw of from 5.0×103 to 4.0×105, and the membrane has a shutdown temperature≦130.5° C. and a rupture temperature≧170.0° C.
摘要:
The invention relates to microporous membranes comprising polymer and having well-balanced permeability, shutdown temperature, and pin puncture strength. The invention also relates to methods for making such membranes, and the use of such membranes as battery separator film in, e.g., lithium ion secondary batteries.
摘要:
A microporous membrane comprising polyolefin copolymer, the membrane having a shutdown temperature≦130.5° C. and a shutdown activation energy E2≧3.5×103 J/mol.
摘要:
A microporous membrane includes a low melting polypropylene, the low melting polypropylene being a polypropylene homopolymer or copolymer having an MFR≧2.0×102, a Tm of 85.0° C. to 130.0° C., and a Te-Tm≦10° C.
摘要:
The invention relates to microporous membranes comprising polymer and having well-balanced permeability, shutdown temperature, and pin puncture strength. The invention also relates to methods for making such membranes, and the use of such membranes as battery separator film in, e.g., lithium ion secondary batteries. The membrane has a shutdown temperature
摘要:
A microporous membrane includes a low melting polypropylene, the low melting polypropylene being a polypropylene homopolymer or copolymer having an MFR≧2.0×102, a Tm of 85.0° C. to 130.0° C., and a Te-Tm≦10° C.
摘要:
This invention relates to microporous membranes comprising polyolefin, the use of such membranes as battery separators, and methods for producing such microporous membranes. In particular, the invention relates to microporous membranes having a shutdown temperature in the range of 120.0° C. to 130.0° C. and a maximum solid state heat shrinkage ≦30.0%.
摘要:
A microporous membrane comprising layers, wherein at least one layer comprises a first polymer having a Tm in the range of 115.0° C. to 130.0° C. and an Mw of from 5.0×103 to 4.0×105, and the membrane has a shutdown temperature ≦130.5° C. and a rupture temperature ≧170.0° C.