Method for preparing colorized fire-retardant delustering hollow polyester filament

Abstract

The invention relates to a method for preparing a polyester filament, in particular to a method for preparing a colorized fire-retardant delustering hollow polyester filament. The method mainly solves the technical problem of the prior art that color master batches and a delustering agent added into a fire-retardant slice can influence the viscosity of a fused mass during the spinning and the friction to a device in the processing process so that colorized, fire-retardant and delustering finished polyester fiber and the like cannot be prepared. The preparation method comprises the following steps: adding a copolymerization fire retardant in the process of preparing a polyester slice to form the fire-retardant slice; performing pre-crystallization on and drying the fire-retardant slice, the color master batches and delustering master batches, and evaporating the water content; mixing the fire-retardant slice with the color master batches and the delustering master batches, passing the mixture into a double screw extruder to perform heating melting, performing filter mixing and measuring allocation on the fused mass, and spinning the fused mass into tows; and performing cooling molding on the tows through lateral blow, and obtaining a finished product after oil tanker oiling, drafting, networking and winding.

Description

technical field [0001] The invention relates to a preparation method of polyester filaments, in particular to a preparation method of colored flame-retardant extinction hollow polyester filaments. Background technique [0002] In recent years, my country's polyester industry has developed rapidly. The output of polyester fiber has grown from 5.165 million tons at the beginning of 2000 to 12.4 million tons at the end of 2005, with an average annual growth rate of more than 20%. The output has doubled compared with five years ago. many. Polyester has become the synthetic fiber variety with the largest output among chemical fibers, and is widely used in various aspects of national economy and people's livelihood such as clothing, decoration, home textiles, industrial textiles, national defense, and industrial engineering. In the next five years, it will continue to grow rapidly. However, as a textile material, polyester fiber also has obvious disadvantages. Therefore, choosin...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a preparation method of colored flame-retardant and matte hollow polyester filaments, which mainly solves the existing problem in the prior art that adding color masterbatches and matting agents to flame-retardant chips will affect the spinning process. The viscosity of the melt during the filament and the friction of the equipment during the processing, so it is impossible to prepare polyester fibers with colored, flame-retardant and matting finishes.