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

A production system and production method technology, applied in the direction of adding pigments in single-component polyester rayon filament, spinning solution, etc., can solve the problem of poor spinning performance of functional polyester melt, difficult to spin fine denier or ultra-fine denier. The problems of fine denier and functional powder are difficult to achieve the effect of enhancing interaction force, uniform structure and reducing agglomeration

Active Publication Date: 2021-03-16
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The raw material slurry of terephthalic acid and ethylene glycol prepared into a polyester oligomer with an alkyd molar ratio of 1.12 is continuously and uniformly transported to the vertical first esterification reaction tank and the vertical first esterification reaction tank at a flow rate of 4601kg / h. The esterification reaction is carried out in an esterification reaction system composed of diesterification reactors, the reaction temperature of the first esterification reactor is 265°C, and the reaction temperature of the second esterification reactor is 268°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 hydroxyl value of the polyester oligomer reaches 84mgKOH / g, the oligomer delivery metering device consisting of a pump and a flow meter is continuously and stably withdrawn from the second esterification reactor ...

Embodiment 2

[0056] The raw material slurry of terephthalic acid and ethylene glycol prepared into a polyester oligomer with an alkyd molar ratio of 1.12 is continuously and uniformly transported to the vertical first esterification reaction tank and the vertical first esterification reaction tank at a flow rate of 4601kg / h. The esterification reaction is carried out in an esterification reaction system composed of diesterification reactors, the reaction temperature of the first esterification reactor is 265°C, and the reaction temperature of the second esterification reactor is 268°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 hydroxyl value of the polyester oligomer reaches 84mgKOH / g, the oligomer delivery metering device consisting of a pump and a flow meter is continuously and stably withdrawn from the second esterification reactor ...

Embodiment 3

[0063] The terephthalic acid and ethylene glycol are formulated into a slurry with an alkyd molar ratio of 1.05, and the slurry is continuously and uniformly transported at a flow rate of 4516kg / h to the vertical first esterification reactor and the vertical second esterification reactor. The esterification reaction is carried out in the esterification reaction system, the reaction temperature of the first esterification reaction tank is 265°C, and the reaction temperature of the second esterification reaction tank is 270°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 hydroxyl value of the polyester oligomer reaches 40mgKOH / g, the oligomer delivery and metering device consisting of a pump and a flow meter is continuously and stably withdrawn from the second esterification reactor at a flow rate of 3834kg / h.

[0064] The pol...

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Abstract

The invention belongs to the technical field of polymer material synthesis, and particularly relates to a functional polyester production system. The functional polyester production system comprises apolyester main production system, and further comprises an alcoholysis reaction system and a functional powder dispersion liquid continuous preparation system, the polyester main production system comprises an esterification system, a pre-polycondensation system and a final polycondensation system which are connected in sequence, the inlet of the alcoholysis reaction system is connected with theoutlet of the esterification system, the outlet of the alcoholysis reaction system is connected with the functional powder dispersion liquid continuous preparation system, and the outlet of the functional powder dispersion liquid continuous preparation system is connected with the pre-polycondensation system or / and the esterification system through an online adding device. The invention further 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 production method, production system and functional polyester fiber of functional polyester. 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 Dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/78C08G63/183D01F6/92D01F1/04
Inventor 邱志成李鑫金剑王颖张厚羽王雪李志勇刘玉来马肖刘建立
Owner CHINESE TEXTILE ACAD
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