China PP Battery Separator PP Separator Film Polypropylene PP Separator

In the structure ofthe lithium battery, separator is one of the key component. The propertieMining Machinery s of the separator determines of interface structure, resistance of battery,directly influencing the capacitance, circulation,safety and other properties. High performance separator is very important to improve the comprehensive performance of the lithium battery.The main function of the separator is to separate the positive and negative pole, in case of the short-circuiting due to the contact of the two poles. Furthermore, it also help the electrolytepass through. The material of the separator is non-conductive. Its physical and chemical properties have a great impact on battery performance.The separator will be different according to types of batteries. For Lithium battery series, the electrolyte is an organic solvent system,whichis requires a solvent resistance separator material,generally using high strength porous polyolefin film.
20um SeparatorTermUnitInspection valueAppearanceIvory-whiteThicknessmicron20±2Gas permeabilitySec/100ml350-550Military Porosity%38-44Puncturing Strengthg>300Tensile strength MDMpa>90Tensile strength TDMpa>100Film close temperatureºC≤135Film break temperatureºC≥14790ºC heat shrink MD%≤3.590ºC heat shrink TD%≤2105ºC heat shrink MD%≤5105ºC heat shrink TD%≤3120ºC heat shrink MD%≤20120ºC heat shrink TD%≤15
25um SeparatorNamePP(polypropylene)SeparatorItemUnitTypePP-25Thicknessum25AirPermeabilitysec/100ml520Factorofporosity%42TensileStrengthMDKg/cm2>1200TDKg/cm2>130PunctureStrengthg>450ThermalcontIndustrial Robot raction(90ºC1h)MD%≤2.5TD%≤Linear Actuator 0.5Thermalcontraction
(105ºC1h)MD%Petroleum Equipment & Machinery ≤4TD%≤1ObturatortemperatureºC153