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Method for preparing titanium-based matte polyester fiber through direct melt spinning and product

A polyester fiber, melt direct spinning technology, applied in the field of polyester fiber, can solve the problems of large amount of catalyst, easy structure damage, poor particle dispersion, etc., to ensure high dispersion and high activity, avoid agglomeration, The effect of good compatibility

Active Publication Date: 2020-06-16
浙江东太新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is in order to overcome existing catalyst usage amount in above-mentioned prior art is big, TiO 2 Poor particle dispersion, TiO 2 The problem that the structure of particles is prone to damage under high temperature conditions provides a method and product for preparing titanium-based matte polyester fibers by melt direct spinning. Polyester prepolymer II wrapped matting agent with a degree of 3 to 30 (TiO 2 ), reducing the amount of catalyst used and increasing the TiO 2 stability and dispersibility

Method used

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  • Method for preparing titanium-based matte polyester fiber through direct melt spinning and product
  • Method for preparing titanium-based matte polyester fiber through direct melt spinning and product
  • Method for preparing titanium-based matte polyester fiber through direct melt spinning and product

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Effect test

Embodiment 1

[0045] A method for preparing a sheet-like titanium-based polyester catalyst. After mixing terephthalic acid, ethylene glycol, and n-butyl titanate at a molar ratio of 1:1.5:0.01, the temperature is 150°C and the pressure is 0.01MPa. After reacting for 0.5h under the same conditions, the temperature was raised to 200°C and the reaction was continued until the degree of esterification reached 70%. The reaction was terminated, filtered while hot, and then pulverized and ground to obtain a sheet-shaped titanium-based polyester catalyst with an average particle size of 0.5 μm.

Embodiment 2～6

[0047] A preparation method of a sheet-shaped titanium-based polyester catalyst, after mixing BT, CT and DT with a molar ratio of AT, reacting GT at a temperature of ET and a pressure of FT, then raising the temperature to HT to continue the reaction until esterification When the degree reaches IT, the reaction is terminated, filtered while hot, and then pulverized and ground to obtain a sheet-shaped titanium-based polyester catalyst with an average particle size of JT.

[0048]

[0049]

Embodiment 7

[0051] A method for preparing a nanocomposite material for polyester in-situ polymerization modification, firstly adding a mass concentration of 30wt% TiO 2 The ethylene glycol dispersion of the particles, and then uniformly stirred and cooled to obtain a nanocomposite material for in-situ polymerization modification of polyester, TiO 2 The particles are spherical, with an average diameter of 600nm, and TiO in nanocomposites for in-situ polymerization modification of polyester 2 The mass content of the particles is 20% by weight.

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Abstract

The invention relates to a method for preparing a titanium-based matte polyester fiber through direct melt spinning and a product. The preparation method comprises the steps of firstly synthesizing atitanium-based matte polyester melt by taking PTA, EG, a polyester titanium catalyst composite material system and a nanocomposite material for in-situ polymerization of polyester as main raw materials, and then carrying out direct melt spinning to obtain a titanium-based matte polyester fiber, wherein the polyester titanium catalyst composite material system is mainly composed of a polyester prepolymer I with the polymerization degree of 3-50 and a titanium catalyst dispersed into the polyester prepolymer I, and the nanocomposite material for in-situ polymerization of the polyester is mainlycomposed of a polyester prepolymer II with the polymerization degree of 3-30 and TiO2 particles dispersed into the polyester prepolymer II; and the finally prepared titanium-based matte polyester fiber is mainly composed of a polyester fiber matrix, and a titanium catalyst and TiO2 particles dispersed into the polyester fiber matrix. According to the method, the stability and the dispersity of thecatalyst can be improved, the activity of the catalyst is ensured and the usage of the catalyst is reduced.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a method and a product for preparing titanium-based matte polyester fibers by melt direct spinning. Background technique [0002] Polyester (PET, PBT, etc.) resins and their products (fibers, films, and engineering plastics, etc.) are the world's largest, most widely used, and fastest-growing polymer products. Prepared by spinning method. The melt direct spinning method has the advantages of large single-line production capacity and low cost, but the products produced by this method also have the disadvantage of a single variety. In order to overcome this disadvantage, it is urgent to develop in-situ polymerization modification of functional nanomaterials for polyester products Technical and functional materials add technology online. [0003] At present, matting polyester is usually used to produce titanium-based polyester products. By adding titanium dioxide as a matti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/85D01D5/08D01D5/088
CPCD01F6/92D01F1/10C08G63/183C08G63/85D01D5/08D01D5/088
Inventor 詹伟东朱美芳孙茂金孙小国柴晓东
Owner 浙江东太新材料有限公司
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