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Polyester-based composite fiber with excellent thermal insulation and color rendering properties

A composite fiber, thermal insulation technology, applied in the chemical characteristics of fibers, conjugated synthetic polymer rayon, transportation and packaging, etc., can solve the problems of high cost, reduced color rendering, shading, etc. Thermal effect, effect of improving color rendering

Inactive Publication Date: 2015-12-30
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in Patent Document 1, in order to increase the volume of the yarn, it is necessary to supply the highly oriented undrawn yarn to a heat treatment machine, perform an overfeed (overfeed) treatment, and then perform drawing and false twisting, and the cost increases. high
[0010] In Patent Document 2, it is necessary to use silver-plated cloth, and since the silver plating process is necessary, not only the cost becomes high, but also there is a disadvantage of light shielding due to the silver plating on the cloth.
[0011] In Patent Document 3, since 0.5 to 10% by weight of titanium oxide is contained in the sheath, there is a disadvantage that the color rendering property due to dyeing is lowered.
[0012] In Patent Document 4, since the core part contains only 3 to 20% by weight of inorganic oxide particles, it is also clear from the fact that the infrared absorbing agent is used for the knitted fabric that the core-sheath synthetic fiber alone has no effect on the infrared reflectivity. full

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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  • Polyester-based composite fiber with excellent thermal insulation and color rendering properties
  • Polyester-based composite fiber with excellent thermal insulation and color rendering properties
  • Polyester-based composite fiber with excellent thermal insulation and color rendering properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] A polyamide (component A polymer) containing 70% by weight of titanium oxide with an average particle diameter of 0.4 μm in the core component and polyethylene terephthalate (polyethylene terephthalate) containing 1.0% by weight of silica in the sheath component The composite ratio (mass ratio) of component B polymer) is 10:90, using a nozzle with 24 holes (hole diameter 0.25mmφ), spinning temperature 260°C, single hole discharge amount = 1.42g / Spinning in minutes, blow the cooling air with a temperature of 25°C and a humidity of 60% at a speed of 0.4m / s to the spun filaments, and after the filaments are below 60°C, they are introduced to a position 1.2m below the spinning nozzle The length is 1.0m, the diameter of the inlet guide rod is 8mm, the diameter of the outlet guide rod is 10mm, and the inner diameter is 30mm. The strips were oiled and wound by two take-off rolls at a speed of 4000 m / min to obtain 84T / 24f composite fiber filaments (strength 2.53cN / dtex, elonga...

Embodiment 2～11

[0108] The polymers of components A and B, the added particles and content of components A and B were changed, and spinning was carried out in the same manner as in Example 1 to obtain the 84T / 24f conjugated fiber yarn. Table 1 shows the physical properties of the obtained fibers. All of them had good L* value and ΔT, and were of quality without any problem. In addition, in Example 10, by using barium sulfate as the fine particles contained in the sheath component, a high heat-shielding effect can be obtained while maintaining the color rendering property. In addition, the color fastness to washing and color fastness to light of any fiber are above grade 4.

Embodiment 12～13

[0110] The core-sheath ratio of this conjugate fiber was changed, and it spun by the same method as Example 1, and obtained this conjugate fiber filament of 84T / 24f. All exhibited excellent thermal insulation properties and color rendering properties, and were of quality without any problem. In addition, the fastness to washing and the fastness to light of any fiber were all grade 4 or higher.

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Abstract

The present invention provides a polyester composite fiber that has high reflectivity at infrared wavelengths (for example, 800 to 3000 nm) that are easily converted into heat energy and has color rendering properties equivalent to those of existing polyester fibers. The polyester composite fiber is a core-sheath type composite fiber with a mass ratio of core component to sheath component of 10:90 to 30:70, wherein the core component is a thermoplastic polymer containing more than 8% by weight and 70% by weight. A sun-shielding substance with an average particle diameter of 0.5 μm or less; the sheath component is a polyester polymer containing 0.5% by weight or more and 10% by weight or less of heat-insulating particles capable of maintaining color development. The average particle diameter of the protective microparticles is 0.1 μm or less and smaller than the average particle diameter of the sunlight-shielding material.

Description

[0001] Associate application [0002] This application claims the priority of Japanese Patent Application No. 2012-014682 filed in Japan on January 27, 2012, the entire content thereof is referred to, and it is incorporated as a part constituting this application. technical field [0003] The present invention relates to a polyester-based composite fiber having high reflectivity at wavelengths of infrared rays (for example, 800 to 3000 nm) that are easily converted into heat energy, thereby providing heat insulation, and having the same level as conventional polyester fibers color rendering. Background technique [0004] Conventionally, many fabrics having a refreshing feeling have been proposed. For example, there is a method of designing the shape or weaving method of the fiber to provide a cool feeling by the heat-insulating effect (Patent Document 1), a method of covering the surface of the fiber with a silver-plated cloth to reflect infrared rays (Patent Document 2), ...

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): D01F8/14
CPCD01F1/10D01F1/106D01F8/14Y10T428/2927
Inventor 大贺大介中塚均河角慎也高桥江理子末吉正二
Owner KURARAY CO LTD
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