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Direct spinning method and system of colored terylene polyester melt mass

A polyester melt and colored polyester technology, applied in melt spinning, textiles and papermaking, single-component polyester rayon, etc., can solve the problems of destroying the molecular order structure of the melt and reducing fiber performance, and achieve The effect of reducing melt viscosity, good consistency and good hand feeling

Inactive Publication Date: 2019-02-22
JIANGSU JIANGNAN HIGH POLYMER FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other is to directly add toner or colored masterbatch to the melt for spinning, but directly adding toner or colored masterbatch to the melt will destroy the ordered structure of the melt molecules, resulting in a decrease in fiber performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The colored polyester polyester melt direct spinning method, the steps comprising:

[0019] (1) Esterification reaction: The esterification reaction is carried out after blending purified terephthalic acid and ethylene glycol at a molar ratio of 1.1-1.5. The esterification pressure is controlled at 70KPa, and the internal temperature of the esterification is stably controlled at 262±2°C. The top temperature of the separation tower is 114°C±2°C, and the esterification rate is 91-92%;

[0020] (2) Pre-shrinkage reaction: send the esterification reaction product into the pre-shrinkage reactor, and the oligomer pipeline is controlled at 270±5°C. At the same time, a 15% potassium hexafluorotitanate solution is added to the oligomer pipeline with a syringe As catalyzer, the addition of potassium hexafluorotitanate active ingredient is 25 μ g / g, adds 20% concentration titanium dioxide solution as matting agent, makes titanium content be 0.2% (mass ratio) in the finished produc...

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PUM

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Abstract

The invention provides a direct spinning method of colored terylene polyester melt mass. The method comprises the following steps: performing esterification reaction on pure terephthalic acid and glycol; feeding a product produced by the esterification reaction into a pre-condensating reaction kettle to perform pre-condensating reaction; feeding materials into a final polymerization kettle throughthe materials obtained by the pre-condensating reaction so as to perform final polymerization reaction; taking the melt mass of which the conveying quantity is 5 percent by volume to 10 percent by volume on a melt mass main pipeline arranged behind an outlet of the final polymerization kettle, and then enabling the melt mass to enter a dynamic mixer; adding colored masterbatch or colored powder in the dynamic mixer and then performing uniform mixing so as to generate colored melt mass; and then returning to the melt mass main pipeline, then feeding into a spinning box body and performing spinning. The method disclosed by the invention has the advantages that through an online addition way, the colored masterbatch or the colored powder is added into the melt mass, so that the melt mass which is uniformly mixed can be obtained, and the consistency of colors of fibers which are spin out is good. According to a method for reducing a temperature of the melt mass and a temperature of a spinning box body and simultaneously reducing the viscosity of the melt mass, destroy of the colored masterbatch or the colored powder on a fiber structure can be effectively reduced, and the produced fibers have the excellent mechanical performance and good handfeel.

Description

technical field [0001] The invention relates to a method for direct spinning of colored polyester melt. Background technique [0002] There are usually two methods for the preparation of colored fibers. One is the method of dyeing, the dye floats on the surface of the fiber, the color is not firm, and it is easy to fade. The other is to directly add toner or colored masterbatch to the melt for spinning, but directly adding toner or colored masterbatch to the melt will destroy the ordered structure of the melt molecules, resulting in a decrease in fiber performance. Contents of the invention [0003] The purpose of the present invention is to provide a kind of colored polyester polyester melt direct spinning method. [0004] Technical scheme of the present invention is: [0005] A kind of colored polyester polyester melt direct spinning method, its step comprises: [0006] (1) Esterification reaction: The esterification reaction is carried out after blending purified te...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01F1/04C08G63/183C08G63/85D01D5/08
CPCC08G63/183C08G63/85D01D5/08D01F1/04D01F1/10D01F6/92
Inventor 陶冶邓金芳浦金龙
Owner JIANGSU JIANGNAN HIGH POLYMER FIBER
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