Coated aluminum powder and preparation method thereof and coating material containing coated aluminum powder

Abstract

The invention provides coated aluminum powder. The coated aluminum powder is prepared from the following raw material components in parts by mass: 10-26 parts of aluminum powder, 5-14 parts of a coloring pigment, 20-50 parts of a solvent, 0.1-1 parts of an etching substance, and 0.04-0.1 parts of an auxiliary agent, wherein the aluminum powder is oily non-floating aluminum powder, the coloring pigment is one of phthalocyanine blue, cobalt blue, malachite green, carbon black, bright red, medium chrome yellow and permanent yellow, the solvent is at least one of xylene, butyl ester, ethanol, 120 # solvent oil and DMF, the etching substance is one of oleic acid and acetic acid, and the auxiliary agent is at least one of a silane coupling agent and a dispersing agent. According to the invention, the coated aluminum powder can be well dispersed in the coating and has the advantages of being low in brightness, adjustable in color and emissivity and the like, and the preparation method is simple in process, low in price, suitable for mass production and capable of being applied to military protection, civil art coating, building coating material and the like.

Description

technical field [0001] The invention generally relates to the technical field of material modification and camouflage paint, in particular to a coated aluminum powder, a preparation method thereof and a paint containing the coated aluminum powder. Background technique [0002] In recent years, with the rapid development of science and technology, camouflage coatings have been continuously introduced, with higher technical indicators and higher practical requirements. However, the green color of the traditional automotive camouflage paint must meet the camouflage requirements of a typical green background and can only be used for high emissivity, and cannot simultaneously meet the camouflage requirements of optics, infrared, and mid-to-far infrared in 3-color or 4-color camouflage under this background. , especially coatings with a variety of green backgrounds cannot meet the high, medium and low emissivity while being compatible with visible light, near-infrared and hyperspe...

AI Technical Summary

Problems solved by technology

However, the green color of the traditional automotive camouflage paint must meet the camouflage requirements of a typical green background and can only be used for high emissivity, and cannot simultaneously meet the camouflage requirements of optics, infrared, and mid-to-far infrared in 3-color or 4-color camouflage under this background. , especially coatings with a variety of green backgrounds cannot meet the requirements of 3-5μm and 8-14μm under the condition of emissivity of 0.6-0.95, which can meet the high, medium and low emissivity while being compatible with visible light, near infrared and hyperspectral camouflage

[0003] Obviously, traditional car camouflage coatings can no longer meet the needs of future warfare. More and more scientific research institutions have begun to find solutions in other new materials, such as semiconductor materials such as ITO and some conductive polymers to solve the current problems. , and conducted a lot of research, the biggest disadvantage of these materials is the high price

[0004] In the traditional process, aluminum powder is a component often used in the development of camouflage coatings, and sometimes it is even used as the key to solving the problem of low emissivity, but the brightness of aluminum powder itself is very high, and the low brightness camouflage color in the relevant national military standards The brightness is generally low, and it is difficult to be compatible with visible light camouflage and anti-infrared camouflage reconnaissance

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