Functional polyester product and preparation method thereof

A functional polyester technology, which is applied in the field of functional polyester products and its preparation, can solve problems such as poor product quality stability, poor functionality of fiber products, and functional powder cohesion, and achieve excellent modification effects

Active Publication Date: 2019-04-26
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method for preparing functional polyester in this invention is a batch method, and the product quality stability is poor; Simple stirring and mixing not only cannot achieve efficient dispersion of functional powders, but also tends to agglomerate functional powders

Method used

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  • Functional polyester product and preparation method thereof
  • Functional polyester product and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0052] Example 1

[0053] (1) Preparation of functional powder slurry: the pre-dispersed material of ethylene glycol-based functional powder slurry with a pigment red 254 concentration of 60 wt% is continuously and uniformly transported to the two grinders connected in series at a flow rate of 193.3 kg / h In the functional powder slurry preparation unit, the pigment red 254 with an average particle size of 294nm prepared by grinding enters the functional powder slurry supply tank and passes through the functional powder composed of a delivery pump and a flow meter. The functional powder slurry conveying and metering unit of the slurry online homogenization system continuously and stably collects from the functional powder slurry supply tank at a flow rate of 193.3 kg / h.

[0054] (2) Preparation of polyester oligomer: The polyester oligomer slurry includes terephthalic acid slurry and low melting point copolymerized modified monomer isophthalic acid slurry. The terephthalic acid slur...

Example Embodiment

[0059] Example 2

[0060] (1) Preparation of functional powder slurry: The pre-dispersed material of ethylene glycol-based functional powder slurry with a pigment blue 15:3 concentration of 40wt% is continuously and uniformly transported to 3 grinders in series at a flow rate of 290kg / h The functional powder slurry preparation unit is prepared by grinding to obtain pigment blue 15:3 functional powder slurry with an average particle size of 143nm. It enters the functional powder slurry supply tank and passes through a function composed of a delivery pump and a flow meter. The functional powder slurry conveying and measuring unit of the powder slurry online homogenization system is continuously and stably extracted from the functional powder slurry supply tank at a flow rate of 290 kg / h.

[0061] (2) Preparation of polyester oligomer: The polyester oligomer slurry includes terephthalic acid slurry and high-shrinkage copolymerized modified monomer neopentyl glycol slurry. The terephth...

Example Embodiment

[0066] Example 3

[0067] (1) Preparation of functional powder slurry: pre-dispersed ethylene glycol-based functional powder slurry with antibacterial agent mixed with copper and zinc oxide concentration of 30wt% is continuously and uniformly transported to 5 grinders at a flow rate of 255kg / h The functional powder slurry preparation unit is connected in series. The antibacterial agent mixed with copper zinc oxide and the functional powder slurry with an average particle size of 99nm prepared by grinding enters the functional powder slurry supply tank, and passes through the delivery pump and the flow meter. The functional powder slurry is continuously and stably extracted from the functional powder slurry supply tank at a flow rate of 255kg / h by the functional powder slurry conveying and measuring unit of the online addition homogenization system.

[0068] (2) Preparation of polyester oligomer: The polyester oligomer slurry includes terephthalic acid slurry and cotton-like copolym...

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Abstract

The invention belongs to the field of functional polyester, and particularly discloses a preparation method of functional polyester. The preparation method of the functional polyester comprises the following steps: (1) mixing functional powder with dihydric alcohol, and then grinding the mixture to obtain functional powder slurry; (2) mixing terephthalic acid with dihydric alcohol, and then carrying out esterification reaction on the mixture to prepare a polyester oligomer; (3) mixing the functional powder slurry prepared in step (1) with the polyester oligomer prepared in step (2), depressurizing, and then devolatilizing to obtain a functional polyester oligomer; (4) performing pre-polycondensation reaction and final polycondensation reaction on the functional polyester oligomer obtainedin step (3) to obtain functional polyester; and adding a copolymerization modified monomer slurry in an esterification reaction process, wherein the copolymerization modified monomer slurry is prepared by taking the copolymerization modified monomer as a raw material. By the preparation method disclosed by the invention, high uniform dispersion of the functional powder in the functional polyestercan be realized, and the polyester product further has composite functions of cationic dyeing, disperse dye normal pressure dyeing, antibiosis, hydrophilicity, low melting point, high shrinkage, cotton imitation and the like.

Description

technical field [0001] The invention belongs to the field of functional polyester preparation, and in particular relates to a functional polyester product and a preparation method thereof. Background technique [0002] At present, the preparation method of functional polyester fiber is mainly the masterbatch method. The masterbatch method is to first melt and mix the functional powder and the carrier resin to obtain a functional masterbatch with high functional powder content, and then uniformly mix the functional masterbatch melt and the polyester melt for spinning to obtain a functional polymer through the spinning process. Ester fiber. Due to the process of preparing functional polyester fibers by the masterbatch method, the dispersion of functional powders in high-viscosity polyester melts mainly depends on the mechanical shear force provided by the mixing equipment, so it is difficult to realize the dispersion of functional powders in polyester melts. The high uniform...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/78D01F6/92D01F1/10D01F1/04
CPCC08G63/183C08G63/78D01F1/04D01F1/103D01F1/106D01F6/92
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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