POROUS POLYETRAFLUOROETHYLENE (PTFE) SEPARATION FILM WITH INCREASED RESOLVING POWER BY BEING DIPPED IN SILICONE ELASTOMER COATING LIQUID AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A porous PTFE separation film and a manufacturing method thereof are provided to maximize resolving power through a coating layer and coat the coating layer uniformly.;CONSTITUTION: A manufacturing method of a porous PTFE separation film comprises: a step (S10) which manufactures paste by mixing polytetrafluoroethylene powder and liquid lubricant; a step (S11) which manufactures a preform by compressing the paste; a step (S12) which manufactures extruded products by extruding the perform; a step (S13) which performs the calendaring of the extruded product into a sheet shape; a step (S14) which removes liquid lubricants by heating the sheet; a step (S15) which extends the sheet in which liquid lubricant is removed; a step which plasticizes the extended sheet (S16); and a step which dips the plasticized sheet in silicone elastomer coating liquid and coats the same (S17).;COPYRIGHT KIPO 2013;[Reference numerals] (S10) Step which manufactures paste by mixing polytetrafluoroethylene powder and liquid lubricant; (S11) Step which manufactures a preform by compressing the paste; (S12) Step which manufactures extruded products by extruding the perform; (S13) Step which performs the calendaring of the extruded product into a sheet shape; (S14) Step which removes liquid lubricants by heating the sheet; (S15) Step which extends the sheet from which liquid lubricant is removed; (S16) Step which plasticizes the extended sheet; (S17) Step which dips the plasticized sheet in silicon elastomer coating liquid and coats the same