Manufacturing equipment system of flame-retardant polyester fiber

Abstract

The invention provides a manufacturing equipment system of flame-retardant polyester fiber. The system comprises a flame retardant preparation unit, a catalyst and auxiliary mixed solution preparation unit, a slurry preparation unit, a first-stage esterification unit, a second-stage esterification unit, a first pre-polycondensation unit, a second pre-polycondensation unit, a prepolymer conveying and filtering unit, a final polycondensation unit, a final polymer conveying and filtering unit, a spinning melt conveying and distribution unit, a spinning unit and a drafting unit. The manufacturing equipment system of flame-retardant polyester fiber, provided by the invention, is applied to the continuous polymerization direct spinning technology, so that the synthetic fiber has lasting flame retardance, is nontoxic and environment-friendly and has the advantages of high production efficiency, low consumption and loss and low production cost; the synthetic fiber has excellent spinnability and fiber physical properties and excellent polymer flame retardance; the flame retardance of the textile is better and lasting; the limit oxygen index (LOI) is greater than 34; and the synthetic fiber has perfect washing durability and is safe and harmless to human bodies.

Description

technical field [0001] The invention relates to a manufacturing equipment system of flame-retardant polyester fiber. Background technique [0002] Because most of the textiles are flammable, they are increasingly becoming the main hidden danger of indoor fires and have become a serious social problem. [0003] Flame-retardant fibers refer to fibers that have the properties of slowing down, terminating or preventing flame burning. Flame-retardant textiles are mainly used to prevent fires and protect the human body from burns. It has broad application prospects and huge development space in the fields of clothing, home textiles, auto parts, industry and hygiene, and the future market potential is huge. [0004] With the improvement of living standards and the emphasis on safety, the flame retardant standards and regulations for textiles have been gradually established and improved, which has promoted the research, development and application of flame retardant textiles. [0...

AI Technical Summary

Problems solved by technology

At present, the domestic flame retardant polyester industry is far from forming a scale. The main reason is that the current production process and equipment of flame retardant polyester fiber are still in the "two-step method" of intermittent or semi-continuous polymerization to produce slices, and then slice spinning to produce fibers. "Low efficiency, high loss, small-scale production stage, and poor spinnability of chip spinning (difficult to dry chip crystallization, fast melt CPF pressure rise, spinning drool, floating yarn, and broken ends), which seriously restricts the resistance to spinning. Industrialization process of flammable polyester fiber

Some foreign companies still use batch polymerization process and equipment, and their synthetic fibers have a short flame-retardant period and are slightly toxic

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