Lithium ion Battery Membrane Polyethylene Membrane PE Membrane Wet Double Base Membrane（25um*60mm*10m）

Basic performance Material: single layer PE film Thickness: 25μm Width: 60mm Length: 100m Air permeability: 200sec/ml Porosity: 44% Thermal shrinkage: 3% longitudinally; Horizontal 1% Tensile strength: 1200kgf/cm2 in longitudinal direction; Transverse 1200kgf/cm2

• The wet method is also called phase separation method or thermally induced phase separation method. The high boiling point hydrocarbon liquid or low molecular weight substance is mixed with polyolefin resin, the mixture is heated to melt and the melt is laid on the sheet, and then the phase separation occurs when the temperature is lowered. Then the sheet is oriented longitudinally or biaxially, and the liquid is extracted with volatile solvent. It can be used to prepare microporous membrane materials which are connected with each other.
• The diaphragm produced by wet biaxial stretching method has high longitudinal and transverse strength due to biaxial stretching. At present, it is mainly used for single-layer PE diaphragm.
• In general, PP is relatively more resistant to high temperature, while PE is relatively resistant to low temperature; PP density is smaller than PE; PP melting point and closed cell temperature are higher than PE