Patent ID: 8906278

Claim:
A melt spinning process for producing a PAN fibre by using an ionic liquid as plasticizer, comprising the following steps: a) mixing an anhydrous PAN powder and an ionic liquid uniformly in a weight ratio from 1:1 to 1:0.25 to obtain a mixture; b) adding the mixture from step a) into a hopper of twin-screw spinning machine to conduct melt spinning with a screw rotation speed of 40-120 r/min at a predetermined spinning temperature ranging from 170° C. to 220° C.; and a filament from the spinning machine being drawn directly by means of dry-heat drawing without a water bath, with a drawing temperature ranging from 80° C. to 180° C. and a drawing ratio of 1 to 8; c) washing the drawn fibre with water, thermosetting and winding to obtain the PAN fibre.