JPH01297463A - Coloring composition for camouflaging and camouflaged colored material - Google Patents

Abstract

PURPOSE:To obtain the subject composition having camouflaging effect to visible light and effective camouflaging effect to electromagnetic radiation of infrared range and useful for military articles, etc., by compounding an electromagnetic radiation-absorbing pigment and, as necessary, an electromagnetic radiation-diffusing and reflecting material. CONSTITUTION:The objective coloring composition for camouflaging can be produced by compounding a natural or synthetic film-forming material (e.g., alkyd resin) or a molding material (e.g., various plastics and rubbers) with (A) 0.05-70wt.% of one or more electromagnetic radiation-absorbing pigments such as carbon black pigment and aniline black pigment and, as necessary, (B) 0-40wt.% of electromagnetic radiation-diffusing and reflecting material. A camouflaged colored article having a 60 deg. specular gloss of <=2% can be produced by using the obtained camouflaging composition.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a novel camouflage colored composition and camouflage colored article against electromagnetic waves, and more specifically, it relates to a novel camouflage colored composition and a camouflage colored article, which contain an electromagnetic wave absorbing dye and an electromagnetic wave diffuse reflector if necessary. Provided are a camouflage colored composition containing the same, and a camouflage colored article comprising the colored composition.

The colored camouflage article of the present invention has a camouflage color of black to gray under visible light, has low electromagnetic wave reflectivity against irradiation with electromagnetic waves, and has an excellent camouflage effect when searching for electromagnetic waves.

(Prior Art) Conventionally, military facilities, vehicles, ships, aircraft, clothing, etc. have been marked with objects that make it difficult to distinguish them from the surrounding environment or other objects in order to avoid visual detection. In addition, they are often disguised with slimy camouflage to create an illusion.

For example, in grasslands and forests, objects are given a dark green camouflage similar to that of plants, while in fields, deserts, etc. where soil, sand, rocks, etc. are the main camouflage, dark brown to Objects are decorated with camouflage based on dark brown, and in snowy fields,
Camouflage methods are being used to cover objects with white cloth or sheets.

(The problem that the invention is trying to solve) However,
With the recent development of optoelectronic equipment, it has become possible to irradiate electromagnetic waves other than visible light, such as infrared rays, detect objects by the reflection, and guide guided missiles toward the object, even at night. Even if camouflage in visible light is insufficient, it is becoming possible to attack by searching for electromagnetic waves.

Therefore, there is a need for the development of a technique for applying camouflage means to military objects such as those described above that is effective not only for visual inspection but also for electromagnetic wave detection.

(Means for Solving the Problems) As a result of intensive research in response to the demands of the prior art as described above, the present inventors have discovered that by coloring an object using a specific coloring composition, the object is resistant to visible light. It is possible to provide an effective camouflage effect against electromagnetic waves by fully possessing the function of diffusing and reflecting electromagnetic waves and the function of absorbing electromagnetic waves even in the infrared region. The present invention was completed based on this knowledge.

That is, the present invention provides a camouflage coloring composition comprising an electromagnetic wave-absorbing dye, an electromagnetic wave diffusing and reflecting agent if necessary, and a natural or synthetic film-forming material or molded article-forming material, and a camouflage coloring comprising the coloring composition. It is an article.

(Preferred Embodiments) Next, the present invention will be described in more detail by citing preferred embodiments.

In the present invention, electromagnetic waves mainly mean Tifdi waves in the wavelength range of visible light and infrared rays. The electromagnetic waves used in conventional electromagnetic wave search systems are mainly those emitted from infrared light emitting diodes, semiconductor lasers, gas lasers, solid-state lasers, and the like.

In the present invention, in addition to the visual camouflage effect, the electromagnetic wave reflection function of an object is significantly reduced in response to the electromagnetic wave irradiation described above, and the detection ability of the light receiving section of the search system is reduced or eliminated.

The electromagnetic wave-absorbing pigment used in the present invention is a pigment that has the property of strongly absorbing electromagnetic waves in a wide range as described above, and particularly preferable ones include carbon black pigments, aniline black pigments, and iron oxide black. pigments,
Examples include titanium oxide black pigments, spinel type black pigments, etc., and specific examples include: C, L Pigment Black 1, C, [, Pigment Black 6, C, 1, Pigment Black 7, C, T, Pigment Black 8, C,1, Pigment Black 9, C,1, Pigment Black 10, C,1, Pigment Black 11, (:, T, Pigment Black 12, etc.).

Further, the electromagnetic wave diffuse reflector that may be used in the present invention is a material that provides diffuse reflection to incident electromagnetic waves as described above, and includes, for example, silicic anhydride, hydrated silicic acid, aluminum silicate, and magnesium silicate. , mica, talc, diatoms, etc., and aluminum stearate, hardened melamine resin, hardened urea resin, hardened benzoguanamine resin, styrene resin, methacrylate [・
Examples include organic fine powders such as organic resins, carbonate resins, and the like.

In addition, if the electromagnetic wave absorbing dye also has electromagnetic wave diffuse reflection performance, that performance can be utilized, so materials such as those exemplified above do not need to be used.
Moreover, the amount used can be reduced.

The coloring composition of the present invention consists of the above-mentioned one or two types of materials and a film-forming material or molded article-forming material that holds these materials, and the forms of these compositions include paints,
Coating agents, printing inks, printing agents, impregnating colorants, colorants for plastics and rubber, colorants for synthetic fibers, or compounds for molding plastics, rubber, etc. containing these colorants, etc. may be used in any form. Not limited.

Natural or synthetic film-forming materials used in the coloring composition of the present invention include alkyd resins, phenol-modified alkyd resins, styrenated alkyd resins, amino alkyd resins, melamine resins, urea resins, epoxy resins, and polyester resins. Polymer, polyurethane polymer, acrylic polyol urethane polymer, soluble polyamide polymer, phenolic resin, rosin modified phenolic resin, rosin modified maleic acid resin, (meth)acrylic ester (co)polymer, ( meth)acrylic ester-styrene copolymer, vinyl acetate (co)polymer, styrene (co)polymer, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, polyvinyl butyral, Cellulose acetate butyrate, oil-based systems such as nitrocellulose, casein, hydroxyethylcellulose, water-soluble salts of styrene-maleic acid ester copolymers, water-soluble salts of (meth)acrylic ester-based (co)polymers, styrene-( Water-soluble salt of meth)acrylic ester copolymer, water-soluble alkyd resin, styrene-butadiene copolymer latex, (meth)acrylic ester copolymer latex, styrene-(meth)acrylic ester copolymer Examples include aqueous systems such as latex, ethylene-vinyl acetate copolymer latex, polyethylene dispersion, and ethylene copolymer dispersion.

In addition, the molded article forming materials used in the present invention include conventionally known materials capable of forming molded articles such as various plastics and rubbers, and materials capable of forming fibers, woven fabrics, non-woven fabrics, etc., such as vinyl chloride resin. , styrene resin, acrylic resin, acrylonitrile-styrene resin, styrene-butadiene resin, acrylonitrile-butadiene-styrene resin, polyethylene, polypropylene, polyester, polyamide, polyurethane, polyvinyl acetal, polycarbonate, polyacetal, unsaturated polyester resin, etc. Materials for forming objects, natural rubber,
Rubber molding materials such as butadiene-styrene rubber, ethylene-propylene rubber, styrene-butadiene-styrene thermoplastic rubber, polyethylene terephthalate, nylon, polypropylene, polyvinyl formal, acrylonitrile (co)polymer, polyurethane, viscose, etc. Examples include fiber-forming materials.

The camouflage coloring composition of the present invention consists of the above-mentioned one or two types of materials and the above-mentioned film-forming material or molded article-forming material, and the pigment used here has a camouflage color under visible light ranging from black to gray. There are cases where the color is achromatic and cases where the color under visible light does not need to be taken into consideration, such as undercoating.

The content of electromagnetic wave-absorbing pigments depends on the concentration required for the final colored object, and in the case of pigments, there is a difference in coloring power per weight between organic pigments and inorganic pigments - although it cannot be generally specified. , - numerically from about O.OS to 70% by weight of the film-forming material or mold-forming material. Further, when toning is required, conventionally known white pigments, chromatic colors, and black pigments may be used in combination as necessary.

In addition, the content of the electromagnetic wave diffuse reflector added as necessary varies depending on the performance of the diffuse reflector used and the dye used in combination, but for example, the content of the electromagnetic wave diffuse reflector added is about 0 to 40% based on the solid content of the film or the molding material. Weight%.

In addition, the colored composition of the present invention contains the above-mentioned electromagnetic wave-absorbing dye (and electromagnetic wave diffusing and reflecting agent) and film-forming material or molded article-forming material as necessary components, but other components may be added as necessary according to each use. It goes without saying that suitable conventionally known additives, such as organic solvents, water, plasticizers, crosslinking agents, catalysts, etc., may also be included.

The method of blending these necessary components and optional components and mixing and dispersing the pigment or fine particles in the film-forming material or molding material may be any conventionally known method, such as ball mill, sand mill, attritor, horizontal continuous method, etc. Conventionally known methods using a medium disperser, two rolls, three rolls, pressure kneader, Banbury mixer, extruder, etc. can be mentioned.

Materials to be colored that are colored by the coloring composition of the present invention include, for example, metal product materials, wood products, plywood, plastic molded products, plastic sheets, synthetic leather, plastic films, woven fabrics made of natural fibers or synthetic fibers, Examples include conventionally known colorable materials such as nonwoven fabric, paper, paper mixed with chemical fibers, and synthetic paper.

As a method for applying or coating the material to be colored, conventionally known methods can be used as they are depending on the form of the coloring composition, such as paint, coating agent, printing agent, impregnation colorant, etc. For example, blade coating, rod coating, etc. Examples include coating, knife coating, squeeze coating, air doctor coating, gravure coating, spray coating, roll coating, and brush coating.

Further, when the coloring composition of the present invention is in the form of a printing ink, any printing method such as letterpress printing, planographic printing, intaglio printing, gravure printing, screen printing, etc. can be used.

Furthermore, it can be used in the form of a brush, felt pen, fiber pen, crayon, pastel, paint, etc., and may be colored by coating, drawing, writing, etc.

On the other hand, when the coloring composition of the present invention is in the form of a colorant for plastics or rubber or a molding compound, for example, conventionally known methods for coloring and molding sheet films, fibers, and three-dimensional molded products, such as mixing rolls, can be used. The camouflage colored article of the present invention is formed by a method using a molding machine such as an extruder, an injection molding machine, a dry type spinning machine, a wet type spinning machine, or the like.

The colored article for camouflage obtained by the present invention as described above is
In addition to having a visual camouflage effect, it has significantly reduced electromagnetic wave reflectivity, and is rated 6 in accordance with JISK5400.
When the 0 degree specular gloss was measured, it showed a gloss of 2% or less, preferably 1% or less, and the diffuse reflection expressed as a percentage was calibrated with a commonly used standard white surface of magnesium oxide under 45 degree human illumination and 0 degree reception. When the reflectance was measured, it showed a reflectance of 15% or less.

(Action/Effect) According to the present invention as described above, colored articles made of the camouflage coloring composition of the present invention, such as various military equipment, have a camouflage effect against visible light and electromagnetic waves in the infrared region. It also shows very low electromagnetic wave reflection when searching for electromagnetic waves that detects objects by irradiating them, and shows a reaction to the search for electromagnetic waves as if the object were an object that did not show any reflection or was a space. Therefore, it has an excellent camouflage effect when searching for electromagnetic waves.

(Example) Next, the present invention will be specifically described with reference to Examples. In the text, parts or % are based on weight unless otherwise specified.

(Left below) Example! Carbon black pigment 3.03 parts Talc 17.88 parts Hydrous silicic acid
6.05 parts Soybean oil modified alkyd resin 56.75 parts (oil length: 53%, solid content = 50
%) Hair dryer 0.93 parts l,'
4 -;2gu' I
15.36 copies total
100.00 parts were blended according to the above recipe, glass beads were added according to a conventional method, and the mixture was dispersed using a paint shaker to obtain the camouflage colored composition of the present invention.

The resulting composition was applied as a room temperature drying black enamel for metal materials onto an iron plate coated with an anti-rust paint, and dried according to a conventional method to obtain a camouflage colored article of the present invention.

In order to examine the properties of the above coated plate against visible light and infrared rays, the reflectance of ultraviolet, visible and near infrared wavelengths was measured using a self-recording spectrophotometer, and the following results were obtained.

・-'nrn-;,,"< Epidemic measure and rainbow-anti-肚地" L
300 4.0 1200 3.340
0 3.9 1300 3.3500
3.7 1400 3.3600
3.6 1500 3.3700 3.
6 1600 3.3800 3.5
1700 3.2900 3.3
1800 3.31000 3.3
1900 3.31100 3.3 2
000 3.4 Furthermore, the glossiness of the above coated plate was measured using a digital glossmeter at 60 degrees according to J I 5K5400, and the glossiness was 0.3%.

Further, the diffuse reflection of the coated plate described above at an incident angle of 45 degrees and a light receiving angle of 0 degrees was measured according to J I 5K5400 and was found to be 3.7%. These performances indicate that it is effective as camouflage against infrared irradiation search systems and guided missiles.

In this specification, "camouflage" refers to a color that misleads the judgment of the naked eye under visible light and a property that misleads the search for electromagnetic waves in the infrared region.Patent applicant Director of Technology Research Headquarters, Defense Agency

Claims (4)

[Claims] (1) A camouflage coloring composition comprising an electromagnetic wave absorbing dye, optionally an electromagnetic wave diffusing and reflecting agent, and a natural or synthetic film-forming material or molded article-forming material. (2) A camouflage colored article comprising the composition according to claim 1. (3) The camouflage colored article according to claim 2, which has a 60 degree specular gloss of 2% or less. (4) The electromagnetic wave absorbing pigment is a carbon black pigment,
Claims 1 and 2, which are one type of pigment or a mixture of two or more types of pigments selected from the group consisting of aniline black pigments, iron oxide black pigments, titanium oxide black pigments, and spinel structure black pigments. The camouflage colored composition and camouflage colored article described above.