| abstract |
(S1) Polyolefin, diluent, initiator, alkoxy compound and carbon-carbon double bond group-containing silane compound, and crosslinking catalyst are introduced into an extruder and mixed in a kneading section, and then extruded through a gear pump to a die outlet to silane grafted polyolefin composition Preparing a; (S2) forming and stretching the extruded silane-grafted polyolefin composition in a sheet form; (S3) extracting a diluent from the stretched sheet to prepare a porous membrane; (S4) heat-setting the porous membrane; And (S4) cross-linking the heat-fixed porous membrane; and the residence time until the polyolefin in the (S1) step is mixed and transferred to the rear end of the gear pump after being mixed. A method for producing a crosslinked polyolefin separation membrane of 30 minutes to 6 minutes 30 seconds and the crosslinked polyolefin separation membrane are presented. |