| abstract |
The present invention relates to a method for producing a high strength polyketone fiber and a polyketone fiber produced by the method, more specifically (A) by adding 0.1 to 10% by weight of a salt to the aqueous solution of resorcinol Preparing a solution; (B) preparing a polyketone solution by dissolving the polyketone containing 90 to 100 mol% of ketone units in repeating units in the resorcinol solution; (C) extruding the polyketone solution through a spinneret and then passing through an air layer to reach a coagulation bath to solidify it to obtain a multifilament; And (D) relates to a method for producing a polyketone fiber comprising the step of stretching by washing, drying and emulsion treatment of the multifilament. According to the present invention, by adding a salt to the aqueous solution of resorcinol and using a mixed coagulation bath of water and methanol, it is possible to prepare a high homogeneous polyketone spinning solution, improve the desolvent rate, and the microfibrils in the fiber axis Orientation well in the direction of the polyketone multifilament as a whole not only a very high strength, but also a low shrinkage at high temperatures can be produced a high strength polyketone fiber excellent in shape stability.n n n n Polyketone Fiber, Resorcinol, Water, Salt, Methanol, Wet Spinning |