摘要:
A biaxially stretched microporous film includes band-like polyethylene material having a film width of not less than 300 mm wherein distribution of physical properties in the film width direction and the thickness variation is less than 1.00 μm and air permeability variation is not greater than 50 seconds/100 mL. The polyethylene microporous film has excellent planarity and uniformity of physical properties required when used in a large-area configuration as a separator film of a lithium ion battery for automobiles or consumer electronics.
摘要:
A biaxially stretched microporous film includes band-like polyethylene material having a film width of not less than 300 mm wherein distribution of physical properties in the film width direction and the thickness variation is less than 1.00 μm and air permeability variation is not greater than 50 seconds/100 mL. The polyethylene microporous film has excellent planarity and uniformity of physical properties required when used in a large-area configuration as a separator film of a lithium ion battery for automobiles or consumer electronics.
摘要:
A microporous membrane roll includes cores formed in whole or in part from electrically conductive members, and microporous membranes wound around the cores. First and second surfaces of the microporous membranes are equivalently charged with antipolar charges. A method of manufacturing the microporous membrane roll includes diselectrifying the microporous membranes with a diselectrifier, and winding the microporous membranes around the cores formed in whole or in part from the electrically conductive members.
摘要:
A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more: Pore density=(P/A3)×104 (1) wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%).
摘要:
A polyethylene microporous membrane has a Gurley air permeability of 1 to 1,000 sec/100 mL/25 μm, wherein the total length of waviness widths in the width direction of the polyethylene microporous membrane is not more than one-third of the overall width of the microporous membrane. The polyethylene microporous membrane has excellent planarity without compromising any other important physical property such as permeability.
摘要:
A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more: Pore density=(P/A3)×104 (1) wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%).
摘要:
A method of producing a microporous membrane includes combining at least a first polyethylene and a first diluent; combining at least a second polyethylene and a second diluent; combining at least a third polyethylene and a third diluent; forming from the combined polyethylenes and diluents a multi-layer extrudate having a first layer containing the first polyethylene, a second layer containing the second polyethylene, and a third layer located between the first and second layers containing the third polyethylene, wherein the extrudate contains polyethylene having a terminal unsaturation ≧0.20 per 10,000 carbon atoms in an amount of 4.0 wt. % to 35.0 wt. %; and removing at least a portion of the first, second, and third diluents from the multi-layer extrudate to produce the membrane.
摘要:
A process of producing a membrane includes extruding diluent and polymer to form an extrudate, the polymer includes a first polyethylene having an Mw 1.1 and removing at least a portion of the diluent from the extrudate.
摘要:
A process of producing a membrane includes extruding diluent and polymer to form an extrudate, the polymer includes a first polyethylene having an Mw 1.1 and removing at least a portion of the diluent from the extrudate.
摘要:
A polyethylene microporous membrane has a Gurley air permeability of 1 to 1,000 sec/100 mL/25 μm, wherein the total length of waviness widths in the width direction of the polyethylene microporous membrane is not more than one-third of the overall width of the microporous membrane. The polyethylene microporous membrane has excellent planarity without compromising any other important physical property such as permeability.