JPS6366385A - Cloth for camouflage - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <*Field of Application of Togami> The present invention improves chicken skin performance (camouflage P) for infrared reconnaissance! A fabric that has

It is used for shelters, covers, camouflage clothing, etc. for ships, aircraft, and tanks.

<Prior art> Recently, there is a new reconnaissance technique on the battlefield! A method has been devised and infrared light has been utilized for this purpose. For example, when a research aircraft takes an infrared photograph of a munitions facility or army on the ground, the munitions facility presents an image that cannot be distinguished from the objects on the ground.

Similarly, reconnaissance activities such as infrared night surveillance and direct observation using infrared filters are also conducted. Therefore, in order to counter such reconnaissance methods using infrared rays, there is a need for covers and camouflage clothing that have infrared reflective ability similar to those on battlefields in the infrared region. However, an aromatic polyamide fabric that can sufficiently handle such weight and weight has not yet been developed.
1. On the other hand, aromatic polyamide fabrics coated with a coloring material are known, and flame-retardant aromatic polyamide fabrics coated with a coloring material are also known. through a fixing agent containing a flame retardant,
Alternatively, an aromatic polyamide fabric coated with a pigment via a flame-retardant fixing agent is disclosed (Japanese Patent Laid-Open No. 57-1998).
-205579 publication or JP-A-58-13791
issue).

However, there is still no known aromatic polyamide fabric that has infrared reflective performance similar to that seen on battlefields in the infrared region and also has flame retardant performance.

<Object of the Invention> The present invention has been made to solve such problems in the prior art. In other words, fighting on a battlefield, etc.)
The object of the present invention is to provide a fabric that has infrared reflective performance similar to that of the above fabric and also has flame retardant performance.

<Structure of the Invention> In other words, the present invention provides (υ) In an aromatic polyamide fabric coated with a coloring material, the coloring material is a coloring material with a large infrared reflective ability and a coloring material with a small infrared reflective ability in a specific infrared wavelength range. A camouflage fabric (2) characterized by comprising: A camouflage fabric (3) according to claim (1), comprising an aromatic polyamide fabric coated with a coloring material via a flame retardant adhesive. ) A camouflage fabric according to claim (1), which is obtained by coating an aromatic polyamide fabric with a coloring material via a fixing agent containing a flame retardant. Claim 118 (which is an amide)
The camouflage fabric according to any one of items 1) to (3).

The coloring material used in the present invention consists of a coloring material with a high infrared reflective ability and a coloring material with a low infrared reflective ability in a specific infrared region.

Desirably, each color has an infrared reflectance that approximates the infrared reflectance of objects surrounding the location where the camouflage fabric is used. For example, khaki, green, etc. are visible light (
Not only does it have a hue similar to cloudy forests and grasslands in the range of 400nm to 700nm, but also in the infrared range (680nm to 1500nm).
It is desirable that the reflectance of (m) be close to that of plant leaves, and similarly, it is desirable that brown be close to the reflectance of dead trees, etc., and black or dark brown be close to the reflectance of soil, rocks, etc.

The present invention provides a technique for producing a fabric that has a predetermined hue in the visible region (khaki, green, brown, black, etc.) and has arbitrary reflectance in the infrared region.

In general, coloring materials of class 3 to 1 or higher are used to mix coloring materials to achieve the desired % restoration of color. The most commonly used primary colors are red, fruit, and yellow.

A dyed product obtained using the three primary colors has a specific infrared reflective ability depending on the blending ratio. Now assume that the reflectance in the infrared region is larger (smaller) than the target value. In order to bring this bond closer to the target value, we must replace the li color of the three primary colors used in this combination with a new, different coloring material to create a new formulation whose infrared reflectance is smaller (or larger) than the target value. ) Select a new coloring material that will By replacing the coloring material thus obtained without completely replacing it, but only partially replacing it at a specific ratio, it is possible to obtain an arbitrary infrared repulsion rate.

In the present invention, the specific color is, for example, green if the battlefield is a forest, or brown if the battlefield is a desert, but in any case, the specific color is based on the battlefield (environment) in which the camouflage fabric is used. Selected with consideration to color.

What is aromatic polyamide? Polyparaphenylene terephthal 7
Mido, polymetaphenylene inphthal 7! Polymetaphenylene inphthal 7mide is particularly preferred from the viewpoint of flame retardant performance.

The coloring material may be an organic coloring material or an inorganic coloring material, and is not particularly limited.

Aromatic Boria! A fixing agent is usually used to give the fabric a dark brown color, but many of the fixing agents generally used for aromatic polyamide fabrics have low flame retardant properties. Therefore, in the present invention, it is particularly preferable to use a fixing agent having flame retardant properties or a fixing agent containing a flame retardant.

<Effect of the invention> The camouflage fabric of the present invention has the following effects.

(1) Since it has the same infrared reflective ability as the surrounding environment on the battlefield, it has camouflage properties against reconnaissance using infrared rays.

(2) It has flame retardant performance and heat resistance when exposed to flames on the battlefield.

(3) High durability when used in harsh environments such as extreme cold and extreme heat.

<Example> The following is an example of the camouflage fabric of the present invention! The q construction method is shown. Incidentally, infrared reflection performance, flame resistance, etc. were evaluated according to the following methods.

Infrared reflectance measurement: Shimadzu Multipurpose Spectrophotometer MPS-5000 Flame resistance: JIS-L-iυ91 A-1 method and A-
4 Method Example-1 A plain fabric ('a hand 30/2. date 200.?/ze) made of polymetaphenylene inphthal 7mid tR fiber was dyed at 130°C for 90 minutes in a dye bath with the following composition. .

Dye: C01, Ba5ic Green6 6%ow
f salt; sodium nitrate 25g/l surfactant;
Shiguregar WA-10” (Nippon Senka) 5% owf pH: 4.0 Shading ratio: 1:30 *Polyoxyethylenefurkyl 7-mine amphoteric surfactant followed by 35% hydrogen peroxide 21111, 0.5% Flukylnaphthalic acid powder 2i/l aqueous solution (
After treatment with hot water at 95°C for 30 minutes at pH 10.5), washing with water and drying yielded a khaki-dyed fabric.

Using this dyed cloth, a camouflage pattern (three-color print) was coated and printed at i 1009/m' according to the following recipe.

(Pigment) Green brown black (Fixing agent) Reactive self-crosslinker acrylic acid ester copolymer emulsion 20% QW (Thickener) Acrylic acid polymer
4.0chi (pHpHfM)zs%7mmoni7
Water 0.5% (flame retardant)
Decabromo biphenyl ether (active content: 4 swt%)
(Water dispersion) 2.0% (Flame retardant) Antiseptane dioxide (active content 22 weight water dispersion) 1.0% Then after drying at 100°C for 2 minutes% 15
Dry heat treatment was performed at 0°C for 2 minutes. The obtained woven fabric has a good tl! The hue in all parts is the same.

Prescription 1 for each hue Prescription 2 with a colorant whose reflectance is smaller than the target value in the infrared region Prescription 3 with a colorant whose reflectance is larger than the target value in the infrared region Prescription 1S and prescription Based on the anti-It rate results of 2,
This shows a prescription in which the coloring materials are changed in a specific ratio to match the eye signature OiK. The same applies to the following examples. .

Next, the reflectance at a wavelength of 80 Qnml is shown below.

The fabric obtained with Formulation 3 has reflectance in the visible and near infrared regions as shown in Figure 1.Table 1, i-
It had fastness and flame resistance as shown in 2.

: Example 2 (M material) Khaki green brown black (IIZ1 adhesive) Specially modified Ni latex emulsion 18.0% 0vf (Thickener,) () Self-crosslinking acrylic acid group polymer
5.0% (pfm'tM Nitrous IJ) 25% 7th grade water 0.5% (Flameproof Pl'IJ)
Decap p Mobifeneyl ether (active ingredient a5Z amount/
(Aqueous dispersion) 2.0% (Flame retardant) Antimony trioxide (Aqueous dispersion with active content 22% by weight) 1.0% Then, after drying at 100°C for 2 minutes,
Dry heat treatment was performed at 15 mC for 2 minutes. The hue in the visible region is the same in all formulations of the fabric 1 obtained. Next, the reflectance at a wavelength of 800 nm is shown in Table 4IK. It had excellent fastness and flame resistance.

Example 3 A common product (fabric weight 210.
9/ze)! was dyed at 130° C. for 90 minutes in a dye bath having the following composition.

Dye: C, Ij)aafc Green L 6%
owf salt: @acid salt 25 g/l
Surfactant: Shigregal WA-10* (Japanese Sashimi) Zt
! ) 5% owfp) I: 4. Q Bath ratio: 1:30*Polyoxyethylenefurkyl 7mine
Amphoteric surfactant then 35% aP3 water '229/L
O, 5% 7 l(-sodium lunaphthalate 2g/l
After immersing the sample in an aqueous solution (pH 10.5) at 95°C for 3D minutes, it was washed with water and dried. Subsequently, the sample was padded with a bath having the following composition (C) and then dried at 100° C. for 2 minutes.

Dye: C,! , Vat GrOen 13. 309
/1 Migration gΔ blocking agent: Tamanori 5A-25” (
(Manufactured by Arayo Kagaku) This vinyl acetate and maleic anhydride copolymer were further padded in a bath with the following composition and steamed for 30 seconds at tooo Celsius (alkali: aqueous sodium soy/i arresting agent: hydrosulfide). eopli salt: Sodium sulfate 4op/i then washing with water, oxidation (3!A
Sodium borate 5 pits 502 minutes hot water Shisuisu: +70-L 400 (oleyl ether salt nonionic activator) 3 p/l hot water solution at 90°C for 5 minutes
! ! After washing with water and drying, a khaki-dyed fabric was obtained. Using this dyed cloth, apply Pagey/Gugi (flame retardant) Pyrobatex CP-ink (Chipa Geigy) using the following formulation.
2soy% (crosslinking agent) Lyofix CHN (z
)s.

(Penetrant) Ihagapadol FFU (I) 2 (
Softener) Decrylan WK (t)30
(Catalyst) 85 euphosphoric acid
25 Next, it was washed with water and treated with hot water at 90°C for 5 minutes with an aqueous solution of ztz/l of soda, followed by washing with water and drying. Using this dyed and flame-retardant fabric, apply a 100.
Printed on 9/i.

(Pigment) Green-black (Fixing agent) Specially modified acrylic butadiene copolymer emulsion 22% (Thickener) Acrylic acid poly7-
4°0 (pH adjuster) 25% aqueous a/monia
0.5 (Flame retardant) TE'fy7'ts Mobifuewn-fy Shikuri active ingredient 45% by weight 2.0 Water dispersion) ←Flame retardant) 5 Joshi Rizasen (Active content 22% by weight Water dispersion) 1.0 Then, after drying at 100°C for 2 minutes, 150
Dry heat treatment was performed at ℃ for 2 minutes. The resulting fabrics have the same hue in the visible region regardless of the formulation.

Next, the reflectance at a wavelength of 900 nm is shown below.

The fabric obtained with Formulation 3 has the reflectance in the visible region and near-infrared region as shown in Figure 3, and the fastness and flame resistance as shown in Table 51 and Table 6. Ta.

[Brief explanation of the drawing]

1 to 3 show the reflectance for each color wavelength in Examples 1 to 3. l is khaki, 2 is green, 3 is brown, 4 is black wavelength (
The reflectance (φ) with respect to K (nm) is shown.

Claims (4)

[Claims] (1) For camouflage use, in which the aromatic polyamide fabric is coated with a coloring material, the coloring material is comprised of a coloring material with a high infrared reflective ability and a coloring material with a low infrared reflective ability in a specific infrared wavelength range. fabric (2) A camouflage fabric according to claim (1), which is obtained by coating an aromatic polyamide fabric with a coloring material via a flame-retardant adhesive. (3) A camouflage fabric according to claim (1), which is obtained by coating an aromatic polyamide fabric with a coloring material via a fixing agent containing a flame retardant. (4) The camouflage fabric according to any one of claims (1) to (3), wherein the aromatic polyamide is polymetaphenylene inphthalamide.