A method for preparing a high-strength polyethylene continuous fiber and the resulting product

摘要

#$%^&*AU2011265575A120130411.pdf#####Abstract The invention discloses a method for preparing a high-strength polyethylene continuous fiber, comprising the steps of: (a) placing a linear polyethylene powder into a solvent of paraffin, and extruding the dissolved solution through a spinneret after deaeration at high temperature, and then cooling the extruded solution to further form an as-spun gel filament; (b) placing the as-spun gel filament into a vacuum environment with the temperature of 40*C-120'C and keeping it on standing, wherein the standing time is 3-84 hours; (c) extracting the gel filament by a multi-stage process; (d) drying the fiber after extraction; (e) taking the dried fiber into a multi-drawing process. The invention also discloses a product made according to the above method for preparing a high-strength polyethylene continuous fiber. In the method for preparing a high-strength polyethylene continuous fiber according to the invention, the standing time is shortened by employing the above technical solution, and the as-spun gel filament is placed on standing in a vacuum environment with a temperature over room temperature, in order to facilitate the phase separation of the gel filament, as well as a large amount of solvent is separated out, thereby decreasing the amount of extractant used.