A kind of polyester nylon composite yarn and preparation method thereof

A polyester-nylon composite yarn, the same technology, is applied in the direction of conjugated synthetic polymer artificial filament, filament/thread forming, fiber processing, etc. Wide and flexible effect

Active Publication Date: 2022-03-18
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a polyester-nylon composite yarn and a preparation method thereof, aiming to solve the problem of random "strip-like unevenness" in the prior art when PA6 / PET side-by-side composite fibers are applied to knitted fabrics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of polyester nylon composite yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of polyester nylon composite yarn, according to the FDY process, after the PET melt (intrinsic viscosity is 0.6dL / g) and PA6 melt (intrinsic viscosity is 2.2dL / g) with a mass ratio of 50:50 are distributed , extrude from spinneret m (circular) and spinneret n (circular) on the same spinneret to make FDY filaments, and then perform relaxation heat treatment to obtain polyester nylon composite filaments;

[0045] The PET-PA6 copolymer melt of 5wt% is respectively contained in the PA6 melt and the PET melt; After mixing at a mass ratio of 1, the polycondensation reaction was carried out for 60 minutes at a temperature of 273°C and a vacuum of 45Pa;

[0046] The distribution refers to distributing the PA6 melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PA6 melt through the distribution hole C, and simultaneously distributing the PET melt through the...

Embodiment 2

[0055] A preparation method of polyester nylon composite yarn, according to the FDY process, after the PET melt (intrinsic viscosity is 0.66dL / g) and PA6 melt (intrinsic viscosity is 2.13dL / g) with a mass ratio of 50:50 are distributed , extrude from the spinneret m (ellipse) and spinneret n (round) on the same spinneret to make FDY filaments, and then perform relaxation heat treatment to obtain polyester nylon composite filaments;

[0056] The PET-PA6 copolymer melt of 5wt% is respectively contained in the PA6 melt and the PET melt; After mixing at a mass ratio of 1, the polycondensation reaction was carried out for 55 minutes at a temperature of 275°C and a vacuum of 47Pa;

[0057]The distribution refers to distributing the PA6 melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PA6 melt through the distribution hole C, and simultaneously distributing the PET melt through th...

Embodiment 3

[0066] A preparation method of polyester nylon composite yarn, according to the FDY process, after the PET melt (intrinsic viscosity is 0.68dL / g) and PA6 melt (intrinsic viscosity is 2.17dL / g) with a mass ratio of 50:50 are distributed , extrude from the spinneret m ("8" shape) and spinneret n (circle) on the same spinneret to make FDY filaments, and then perform relaxation heat treatment to obtain polyester nylon composite filaments;

[0067] The PET-PA6 copolymer melt that respectively contains 5wt% in the PA6 melt and the PET melt; After mixing at a mass ratio of 1, the polycondensation reaction was carried out for 55 minutes at a temperature of 275°C and a vacuum of 48Pa;

[0068] The distribution refers to distributing the PA6 melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PA6 melt through the distribution hole C, and simultaneously distributing the PET melt through ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a polyester-nylon composite yarn and a preparation method thereof. According to the FDY process, after distributing PET melt and PA6 melt, they are extruded from spinneret m and spinneret n on the same spinneret to produce FDY It is prepared by relaxation heat treatment after silk; wherein PA6 melt and PET melt flow to spinneret m through distribution holes A and B, and flow to spinneret hole n through distribution holes C and D. At the entrance of each distribution hole, The difference between the apparent viscosities of PET melt and PA6 melt is not more than 5%. Distribution holes A and B are cylindrical holes of equal height, and the diameter ratio is 1.10-1.30:1. Distribution holes C and D are cylindrical holes of equal height. And the diameter ratio is 1:1.10-1.30; the prepared polyester-nylon composite yarn is composed of multiple parallel composite monofilaments of PA6 / PET with two ratios, and the curling direction of the monofilaments in the composite yarn is randomly distributed. The invention solves the problem of "striped unevenness" in the knitted fabric of PA6 / PET side-by-side composite fibers.

Description

technical field [0001] The invention belongs to the technical field of composite fibers, and relates to a polyester-nylon composite yarn and a preparation method thereof. Background technique [0002] In the big family of two-component composite fibers, the side-by-side two-component composite fiber is an important member. It uses the difference in thermal shrinkage properties of the two components to make the fiber bend away from the fiber axis, showing a permanent Three-dimensional spiral crimp for a wool fiber-like curl. The crimping of this kind of fiber does not require the deformation processing of ordinary thermoplastic fibers when they are crimped, and avoids the thermal damage of chemical fibers, so it is usually called "self-crimping fiber", also known as three-dimensional crimping fiber. Long-lasting stability, good elasticity and other characteristics can give the fabric better elasticity, bulkiness and coverage. Side-by-side bi-component composite fibers with ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/12D01D5/32D01D5/253D01D5/22
CPCD01F8/14D01F8/12D01D5/32D01D5/253D01D5/22
Inventor 汤方明魏存宏王山水范红卫陈瑞
Owner JIANGSU HENGLI CHEM FIBER
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