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Camouflage fabric having near infrared ray reflectance adjusting characteristics

a technology of near infrared ray reflectance and camouflage fabric, which is applied in the direction of protective fabrics, lighting and heating apparatus, instruments, etc., can solve the problems of imposing a negative effect on the visible tone, the method is limited in achieving appropriate visible and near infrared ray camouflage, and the enemy is difficult to detect the existence of such targets, etc., to achieve effective camouflage effect, improve concealment, and improve durability

Inactive Publication Date: 2014-06-05
JANG RAE YOUNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention improves the durability of camouflage fabrics made through a typical manufacturing method, by adding a conductive yarn with copper sulfide nanoparticles. This invention also enhances the camouflage performance by giving the fabric the ability to match the near infrared ray reflectance of natural backgrounds. The fabric has superior physiochemical properties and naturally exhibits antimicrobial and antistatic properties, without requiring separate post-treatments. The invention can be used for military apparel, equipment, tents, and instruments.

Problems solved by technology

One of the important responsive measures of the target against the threat thereto is camouflaging, such that it will be difficult for the enemy to detect the existence of such target.
The limitation of this method is that the carbon black added is so excessively dark that the carbon black may impose a negative effect to the visible tone intended for the camouflage fiber.
In an environment such as the desert that requires a considerably bright tone, this method has a limitation in achieving appropriate visible and near infrared ray camouflages.
On the other hand, the inorganic pigments, such as cobalt, vanadium, molybdenum, tungsten, ITO, ATO, and ruthenium, effectively interrupt and absorb rays mainly in the wavelength equal to or greater than 1,200 nm, but the inorganic pigments are very expensive and also there is still a limitation in weather resistance due to the secession.

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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  • Camouflage fabric having near infrared ray reflectance adjusting characteristics
  • Camouflage fabric having near infrared ray reflectance adjusting characteristics
  • Camouflage fabric having near infrared ray reflectance adjusting characteristics

Examples

Experimental program
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Effect test

manufacturing example 1 and manufacturing example 2

[0062]An aqueous silane coupling agent of about 1,000 mg / L which is an equimolar reaction product with imidazole and 3-mercaptopropyltrimethoxysilane was prepared as a preprocessing agent.

[0063]About 30 denier nylon filament yarn of about 50 Kg was dipped in water bath of about 200 Kg containing the preprocessing agent solution at a temperature of about 55° C. for about 60 minutes, and then non-reaction products was washed out with sodium hydroxide solution of about 1 wt %. Thereafter, the nylon filament yarn was dried at an atmospheric temperature of about 80° C. for about one hour.

[0064]Thereafter, the nylon filament yarn was cooled to a room temperature, and then was dyed with metal sulfide nanoparticles composition including copper sulfide or copper sulfide nanoparticles including compositions of Table 9 as postprocessing agent at a temperature of about 55° C. for about 120 minutes to form a nylon conductive yarn containing nanoparticles including copper sulfide or copper sulfid...

manufacturing example 3

[0067]The polyamide (nylon) conductive yarn manufactured in in which metal sulfide nanoparticles including copper sulfide with a total of metal content of about 2.84 wt % having about 30 denier, i.e., resistivity of about 2×10-2 Ωcm are coordinate-bonded and a TC blending yarn of about 60% polyester and about 265.5 denier and a TC blended yarn of about 265.6 denier, i.e., 40 Nc / 2 blending of 60% polyester and 40% scoured cotton yarn were twisted at 360 T / M to manufacture the first multi filament yarn of about 295.6 denier that can adjust the near infrared ray reflectance characteristics.

manufacturing example 4

[0068]A 40 Nc 1 blended yarn of polyester (60%) and scoured cotton yarn (40%) and a high flexible polyester filament yarn of about 150 denier were twisted at 360 T / M to manufacture the second multifilament yarn of about 282.8 denier without a component that can adjust the near infrared ray reflectance characteristics.

[0069]Hereinafter, various embodiments in which the first multifilament yarn of and the second multifilament yarn are designed into plain weaves or fancy plain weaves as a warp and a weft by a loom to variously control the near infrared ray reflectance will be described.

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Abstract

The present invention relates to a camouflage fabric having near infrared ray reflectance adjusting characteristics. The aim of the present invention is to achieve semi-permanent durability so as to significantly ameliorate problems of inferior durability which occur in an existing method for manufacturing a camouflage fabric, i.e. applying carbon and a pigment absorbing near infrared rays to a synthetic fabric, and to enable near infrared ray reflectance in a near infrared ray spectrum having an infrared ray wavelength band of 720 nm to 1500 nm so as to exhibit little or no difference from the near infrared ray reflectance of the natural background of each terrain, thereby achieving predetermined camouflage effects. In addition, copper sulfide nanoparticles, or metal sulfide nanoparticles containing copper sulfide, have antimicrobial properties and conductive properties, and the camouflage fabric for military use, which has superior physiochemical properties and naturally exhibits antimicrobial properties and antistatic properties even without a separate post-treatment, can be provided for effective use in clothing, equipment, tents, military supplies, etc. To achieve the above-described purposes, the camouflage fabric having the near infrared ray reflectance adjusting characteristics according to the present invention is characterized in that conductive synthetic polymeric materials in which copper sulfide nanoparticles, or metal sulfide nanoparticles containing copper sulfide, which fundamentally have near infrared ray reflectance adjusting characteristics, are coordinate bonded to a polymeric substrate and are then designed and woven such that the near infrared ray reflectance in a near infrared ray spectrum having the infrared ray wavelength band of 720 nm to 1500 nm exhibits little or no difference from the near infrared ray reflectance of an object existing in the environment.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2011-0068211, filed on Jul. 11, 2011 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a camouflage fabric with near infrared ray reflectance adjusting characteristics, and more particularly, to a camouflage fabric with near infrared ray reflectance adjusting characteristics, which can solve secession of application chemicals when a near infrared absorbing pigment or a carbon compound is coated on a synthetic fabric in a typical camouflage fabric manufacturing method, by weaving a camouflage fabric having a camouflage performance against a near infrared observation sensor using a conductive yarn containing copper sulfide nanoparticles or metal sulfide nanoparticles including copper sulfide, and has a Near Infrared Ray Reflectance (NIRR) that is identical to or si...

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 Applications(United States)
IPC IPC(8): D03D1/00
CPCD03D1/0047F41H3/00D10B2401/16D06M11/42F41H3/02Y10T428/2481Y10T442/3065Y10T428/249921D03D15/283D03D15/242D06M11/51D06P1/0008D10B2331/02
Inventor JANG, RAE YOUNG
Owner JANG RAE YOUNG
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