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Polyester fiber and preparation method thereof

A polyester fiber and polyester technology, which is applied to polyester fibers containing amine-terminated polyether compounds and their preparation, in the field of polyester fibers, can solve the problems of fiber performance deterioration and molecular weight reduction, and achieve high tensile strength. , low cost, high fiber strength effect

Inactive Publication Date: 2016-08-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, excessively increasing the spinning temperature and melt shear rate will lead to thermal degradation of polyester, resulting in a decrease in molecular weight and deterioration of fiber properties.

Method used

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  • Polyester fiber and preparation method thereof
  • Polyester fiber and preparation method thereof
  • Polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A polyester fiber comprising polyester A and amino-terminated polyether a, wherein the content of amino-terminated polyether a is 0.2% of the polyester A quality, and its preparation method is:

[0062] In an inert gas flow (N 2 ), the polyester A is introduced into the main feed port of the screw extruder at a rate of 1kg / h, and the amino-terminated polyether a is introduced into the side feed port of the screw extruder at a rate of 2g / h. Polyester A and amino-terminated polyether a are mixed in a screw extruder. The obtained mixture is input into the raw material cavity of the spinning machine, and the melt is extruded through the spinneret at 290° C. to form fiber bundles to obtain smooth raw silk. The tensile strength of monofilament measured by stretching is 5.8cN / dtex, and the intrinsic viscosity is 0.66dl / g.

Embodiment 2

[0064] A polyester fiber comprising polyester B and amino-terminated polyether a, wherein the content of amino-terminated polyether a is 0.5% of the polyester B quality, and its preparation method is:

[0065] In an inert gas flow (N 2 ), the polyester B is introduced into the main feed port of the screw extruder at a rate of 1kg / h, and the amino-terminated polyether a is introduced into the side feed port of the screw extruder at a rate of 5g / h. Polyester B and amino-terminated polyether a were mixed in an extruder. The obtained mixture is input into the raw material cavity of the spinning machine, and the melt is extruded through the spinneret at 295° C. to form fiber bundles to obtain smooth raw filaments. The tensile strength of monofilament measured by stretching is 7.1cN / dtex, and the intrinsic viscosity is 0.98dl / g.

Embodiment 3

[0067] A polyester fiber comprising polyester C and amino-terminated polyether a, wherein the content of amino-terminated polyether a is 1% of the quality of polyester C, and its preparation method is:

[0068] In an inert gas flow (N 2 ), the polyester C is introduced into the main feed port of the screw extruder at a rate of 1kg / h, and the amino-terminated polyether a is introduced into the side feed port of the screw extruder at a rate of 10g / h. Polyester C and amino-terminated polyether a are mixed in an extruder. The obtained mixture is input into the raw material cavity of the spinning machine, and the melt is extruded through the spinneret at 295° C. to form fiber bundles to obtain smooth raw filaments. The tensile strength of monofilament measured by stretching is 7.4cN / dtex, and the intrinsic viscosity is 1.11dl / g.

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Abstract

The invention provides a polyester fiber and a preparation method thereof. The polyester fiber is characterized by containing polyester and amino terminated polyether, wherein the content of the amino terminated polyether is 0.1-10% of the polyester mass. The polyester fiber has the advantages of high intrinsic viscosity, high fiber strength, excellent color and luster, low costs and the like. The preparation method of the polyester fiber has the advantages that a process is simple, spinning temperature is low, the intrinsic viscosity change of resin is small before and after spinning, and the like.

Description

technical field [0001] The invention belongs to the field of chemical fibers and relates to a polyester fiber, in particular to a polyester fiber containing an amino-terminated polyether compound and a preparation method thereof. Background technique [0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. It mainly refers to polyethylene terephthalate (PET), and customarily also includes linear thermoplastic resins such as polybutylene terephthalate (PBT) and polyarylate. Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain, and also belongs to polyester in a broad sense. Polycarbonate can be divided into aliphatic, aromatic, aliphatic-aromatic and other types according to the structure of the ester group, but the industry mainly refers to bisphenol A polycarbonate. [0003] Polyester fiber refers to the general term for fibers made from polyester. This type of fib...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D1/06D01D5/00
CPCD01F6/92D01D1/06D01D5/00D01F1/10
Inventor 郑楚昱何勇吴中玲顾超群
Owner DONGHUA UNIV
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