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Sheath-core colored industrial yarn and preparation method thereof

An industrial yarn and sheath-core technology, applied in filament/thread forming, adding pigments to spinning solution, conjugated synthetic polymer artificial filaments, etc., can solve the problem of uneven fiber radial structure and color dispersion Inhomogeneity and other problems, to achieve the effect of low cost, wide color spectrum, and improved mechanical properties

Active Publication Date: 2018-10-09
ZHEJIANG YOUWEI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of uneven dispersion of pigments and uneven radial structure of fibers in the sheath-core type colored industrial silk in the prior art, and to provide a sheath-core type colored yarn with excellent physical properties, low cost and good color fastness. industrial yarn
The invention overcomes the dispersion problem of pigments or dyes caused by the high viscosity of the core layer during the spinning forming process, overcomes the problem of discoloration of pigments or dyes caused by the high temperature of the core layer, and overcomes the high temperature of the core layer that is easy to cause The structure difference between the skin layer and the core layer also overcomes the problem of uneven fiber structure caused by the radial temperature difference of the fiber caused by heat conduction from outside to inside during the post-drawing process of the fiber, and improves the mechanical properties of the industrial yarn. The material is added in the core layer to improve the color fastness; the preparation method of the present invention is simple in process, low in cost, and has great application prospects

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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  • Sheath-core colored industrial yarn and preparation method thereof
  • Sheath-core colored industrial yarn and preparation method thereof
  • Sheath-core colored industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A method for preparing a sheath-core colored industrial yarn, the steps of which are: using polyethylene terephthalate with an intrinsic viscosity of 0.6dl / g as the core layer material, and polyethylene terephthalate with an intrinsic viscosity of 0.75dl / g Ethylene glycol phthalate is the cortex material, which is melt-spun through a skin-core composite component. Titanium dioxide is dispersed in the core material. The mass ratio of the cortex material to the core material is 10:90. The titanium dioxide in the core material The content is 0.5wt%; the process parameters of melt spinning are: the core spinning temperature is 290°C, the cortex spinning temperature is 300°C, the stretching temperature is 160°C, the draw ratio is 4.5 times, and the heat setting temperature is 170°C.

[0055] The monofilament fineness of the finally obtained sheath-core type colored industrial yarn is 4.1dtex, the tensile breaking strength is 6.6cN / dtex, the color fastness to washing is grade...

Embodiment 2

[0057] A method for preparing a sheath-core colored industrial yarn, the steps of which are: using poly(trimethylene terephthalate) with an intrinsic viscosity of 0.85dl / g as the core layer material, and poly(trimethylene terephthalate) with an intrinsic viscosity of 1.1dl / g Propylene glycol formate is the cortex material, which is melt-spun through a skin-core composite assembly, and cadmium sulfide is dispersed in the core material, and the mass ratio of the cortex material to the core material is 40:60, and the content of cadmium sulfide in the core material is 12wt %; The process parameters of melt spinning are: the core spinning temperature is 280°C, the cortex spinning temperature is 290°C, the stretching temperature is 160°C, the draw ratio is 5 times, and the heat setting temperature is 165°C.

[0058] The monofilament fineness of the finally obtained sheath-core type colored industrial yarn is 4.2dtex, the tensile breaking strength is 6.9cN / dtex, the color fastness to ...

Embodiment 3

[0060] A method for preparing a sheath-core colored industrial yarn, the steps of which are: using polybutylene terephthalate with an intrinsic viscosity of 0.85dl / g as the core material, and polybutylene terephthalate with an intrinsic viscosity of 0.95dl / g Butylene phthalate is the cortex material, which is melt-spun through a skin-core composite component, barium sulfate is dispersed in the core material, and the mass ratio of the cortex material to the core material is 20:80, and the barium sulfate in the core material The content is 6wt%; the process parameters of melt spinning are: the core layer spinning temperature is 280°C, the cortex spinning temperature is 290°C, the stretching temperature is 150°C, the stretching ratio is 5 times, and the heat setting temperature is 140°C. ℃.

[0061] The monofilament fineness of the finally obtained sheath-core colored industrial yarn is 4.2dtex, the tensile breaking strength is 6.5cN / dtex, the color fastness to washing is grade 5...

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Abstract

The invention relates to sheath-core colored industrial yarn and a preparation method thereof. The preparation method includes: using polymer dispersed with pigment or dye as the core material, usingpolymer identical with the core material as the sheath material, and using a sheath-core compositing component to perform melt spinning, wherein the melt viscosity of the sheath material of the sheath-core colored industrial yarn is larger than the melt viscosity of the core material under the same spinning temperature condition. The filament number of the prepared sheath-core colored industrial yarn is larger than 4dtex, the tensile strength at break of the prepared sheath-core colored industrial yarn is larger than 6.5cN / dtex, the color fastness to washing of the prepared sheath-core coloredindustrial yarn is level 5, the color fastness to rubbing of the prepared sheath-core colored industrial yarn is level 4-5, and the color fastness to ironing of the prepared sheath-core colored industrial yarn is level 4-5. The sheath-core colored industrial yarn and the preparation method thereof have the advantages that the problems of pigment or dye uneven dispersion and color changing duringspinning and forming and the problem of fiber sheath-core structure unevenness are solved, the mechanical performance of the industrial yarn is increased, and color fastness is increased by adding a coloring material in the core; the preparation method is simple in process, low in cost and promising in application prospect.

Description

technical field [0001] The invention belongs to the field of colored industrial yarn, and relates to a sheath-core type colored industrial yarn and a preparation method thereof. Background technique [0002] Industrial yarn prepared by polymer melt spinning method, such as polyester (PET, PEN, etc.) industrial yarn, polyamide (PA6, PA66, etc.) industrial yarn, thermotropic liquid crystal polymer industrial yarn, etc., because of its good Strength, modulus, and excellent physical and chemical properties are widely used in industrial fields such as automobiles, safety protection, ropes, and composite reinforcement materials. Nowadays, this kind of industrial yarn is more and more widely used in the fields of luggage, shoe materials and so on. [0003] The macromolecules of industrial silk are arranged in an orderly manner and have high crystallinity, which makes industrial silk difficult to dye and has low color fastness and high dyeing cost. In order to solve this problem, ...

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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IPC IPC(8): D01F8/14D01F1/04D01D5/34
CPCD01D5/34D01F1/04D01F8/14
Inventor 范爱荣姬洪陈康甘宇张玉梅
Owner ZHEJIANG YOUWEI NEW MATERIAL
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