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A kind of functional polyester production method, production system and functional polyester fiber

A production method and technology of production system, which are applied in the direction of adding pigments in single-component polyester rayon filament and spinning solution, can solve the problem that it is difficult to spin fine denier or ultra-fine denier, functional powder is difficult, and functional polymerization is difficult. Problems such as poor ester melt spinning performance, to achieve the effect of easy industrialization, improved spinning performance, and improved production efficiency

Active Publication Date: 2020-11-03
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing functional polyester fiber by masterbatch method, since the dispersion of functional powder in high-viscosity polyester melt mainly depends on the mechanical shear force provided by mixing equipment, it is difficult for functional powder to be highly uniform in polyester melt Dispersion, the spinning performance of the prepared functional polyester melt is poor, and it is difficult to spin functional polyester fibers with fine denier or ultra-fine denier

Method used

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  • A kind of functional polyester production method, production system and functional polyester fiber
  • A kind of functional polyester production method, production system and functional polyester fiber
  • A kind of functional polyester production method, production system and functional polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] S1, the raw material slurry of the polyester oligomer slurry with the alkyd molar ratio of terephthalic acid and ethylene glycol being 1.13 is continuously and uniformly transported to the vertical machine with a flow rate of 4613kg / h The esterification reaction is carried out in the esterification reaction system composed of the first esterification reactor and the vertical second esterification reactor. The reaction temperature of the first esterification reactor is 260°C, and the reaction temperature of the second esterification reactor is 265°C. The catalyst ethylene glycol antimony solution with a concentration of 3 wt% was continuously and uniformly injected into the second esterification reaction tank at a flow rate of 54.8 kg / h. When the acid value of the polyester oligomer reaches 15mgKOH / g, the oligomer delivery metering device composed of the oligomer pump and the oligomer flowmeter is continuously and stably extracted from the second esterification reactor at...

Embodiment 2

[0059] S1, the polyester oligomer slurry prepared by terephthalic acid and ethylene glycol with an alkyd molar ratio of 1.13 is continuously and uniformly transported to the vertical The esterification reaction is carried out in the esterification reaction system composed of the first esterification reactor and the vertical second esterification reactor. The reaction temperature of the first esterification reactor is 260°C, and the reaction temperature of the second esterification reactor is 265°C. The catalyst ethylene glycol antimony solution with a concentration of 3 wt% was continuously and uniformly injected into the second esterification reaction tank at a flow rate of 54.8 kg / h. When the acid value of the polyester oligomer reaches 15mgKOH / g, the oligomer delivery metering device composed of the oligomer pump and the oligomer flowmeter is continuously and stably extracted from the second esterification reactor at a flow rate of 3931kg / h. out.

[0060] S2, blend terepht...

Embodiment 3

[0065] S1, the raw material slurry of the polyester oligomer slurry with the alkyd molar ratio of terephthalic acid and ethylene glycol being 1.13 is continuously and uniformly transported to the vertical machine with a flow rate of 4613kg / h The esterification reaction is carried out in the esterification reaction system composed of the first esterification reactor and the vertical second esterification reactor. The reaction temperature of the first esterification reactor is 260°C, and the reaction temperature of the second esterification reactor is 265°C. The catalyst ethylene glycol antimony solution with a concentration of 3 wt% was continuously and uniformly injected into the second esterification reaction tank at a flow rate of 54.8 kg / h. When the acid value of the polyester oligomer reaches 15mgKOH / g, the oligomer delivery metering device composed of the oligomer pump and the oligomer flowmeter is continuously and stably extracted from the second esterification reactor at...

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Abstract

A functional polyester production system, which relates to the technical field of polymer material synthesis. The functional polyester production system comprises a polyester main body production system and a functional powder slurry concentrate preparation system; the polyester main body production system comprises an esterification system, a pre-polycondensation system and a final polycondensation system that are connected in sequence; the functional powder slurry concentrate preparation system comprises an online addition device that is connected to the esterification system or / and to a site between the esterification system and the pre-polycondensation system. By introducing a functional powder slurry concentrate preparation system into a polyester main body production system, a functional powder slurry concentrate having a low hydroxyl value and low pressure filtration value may be continuously prepared, and the prepared functional powder slurry concentrate and a polyester oligomer are uniformly mixed and then undergo a polycondensation reaction to obtain functional polyester in which functional powder is highly uniformly dispersed. The present invention also relates to a functional polyester production method.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis, and in particular relates to a functional polyester production method, production system and functional polyester fiber. Background technique [0002] At present, the preparation method of functional polyester fiber is mainly the masterbatch method. First, the functional powder and the carrier resin are melted and mixed to obtain a functional masterbatch with high functional powder content, and then the functional masterbatch melt is mixed with the polyester for spinning. The ester melts are evenly mixed to obtain functional polyester fibers through the spinning process. In the process of preparing functional polyester fiber by masterbatch method, since the dispersion of functional powder in high-viscosity polyester melt mainly depends on the mechanical shear force provided by mixing equipment, it is difficult for functional powder to be highly uniform in polyester melt Disper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/78D01F6/92D01F1/04
CPCC08G63/183C08G63/78D01F1/04D01F6/92
Inventor 李鑫邱志成王颖张厚羽金剑李志勇刘玉来王雪马肖刘建立
Owner CHINESE TEXTILE ACAD
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