Flat polyester fiber master batch applicable to spun dyeing process and preparation method of master batch

Abstract

The invention provides flat polyester fiber master batch applicable to a spun dyeing process. The flat polyester fiber master batch comprises the following components in parts by weight: 0-30 parts of PBT (polybutylece terephthalate), 40-80 parts of bottle-grade PET (polyethylene terephthalate), 0-30 parts of a coloring agent, 0-5 parts of an aid and 0.1-0.6 part of calcium carbonate, wherein the coloring agent is selected from one or more of a condensed azo pigment, a phthalocyanine pigment, an aminoketone red solvent dye, a quinophthalone yellow solvent dye, a perylene series green solvent dye, an anthraquinone blue solvent dye, an anthraquinone purple solvent dye and an inorganic pigment carbon black; the aid comprises an organic silane high molecular weight dispersing agent. The invention further provides a preparation method of the flat polyester fiber master batch. The flat polyester fiber master batch provided by the invention is applicable to a spun dyeing process, the problems that fiber has very large deformation when being produced and a cross section of the fiber cannot be well maintained can be solved, meanwhile situations of fiber deviation, breakage and fiber burring can be solved, and moreover aftertreatment color fastness requirements can be met.

Description

technical field [0001] The invention relates to a flat polyester fiber masterbatch suitable for pre-spinning coloring process and a preparation method of the masterbatch. Background technique [0002] Flat fiber, due to its large aspect ratio (usually 7.5-10.0), has good directional lodging properties, and can achieve the effect similar to animal fur after weaving and finishing. In order to obtain better fluffiness and soft feel of the fiber, the fiber is often steamed and shaped. At present, there are basically two processes for the production of flat colored fibers on the market: 1) chemical fiber companies use ordinary polyester color masterbatches for pre-spinning coloring processing; 2) chemical fiber companies first spin white or black flat fibers, and then print and dye Enterprises carry out printing and dyeing processing technology. [0003] There are the following three defects in the production of flat colored fibers by the above two processes: First, when chemic...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of flat polyester fiber masterbatch and its preparation method, and this flat polyester fiber masterbatch is suitable for pre-spinning coloring process, can improve the deformation when fiber production is very large, the problem that section shape keeps bad, simultaneously It can solve the problems of floating silk, broken ends and hairy silk, and can meet the requirements of post-processing color fastness