FIBER MASTERBATCH AND MELT SPUN FIBER

A fiber masterbatch including a polyetherimide, a polyethylene terephthalate, and a polyimide is provided. A glass transition temperature of the polyimide is between 140 DEG C. and 170 DEG C., a 10% thermogravimetric loss temperature of the polyimide is between 500 DEG C. and 550 DEG C., and when the polyimide is dissolved in N-methyl-2-pyrrolidone and a solid content of the polyimide is 15 wt %, a viscosity of the polyimide is between 80 cP and 230 cP. A melt spun fiber obtained by using the fiber masterbatch is also provided. The fiber masterbatch has the advantages of favorable hot workability, proper hot working temperature, favorable softness, favorable flame retardancy and favorable heat resistance, does not generate the molten drop phenomenon after combustion, and is suitable for being applied to textiles. The melt spun fiber has good softness, good flame retardance, good heat resistance and low processing temperature, and does not generate a molten drop phenomenon after combustion. 本发明提供一种纤维母粒，包括聚醚酰亚胺