A red low-angle-dependent zinc sulfide structural color pigment and its preparation method

Abstract

The invention discloses red low-angle-dependence zinc sulfide structure color materials and a preparation method thereof, and belongs to the technical field of photonic crystal material preparation. The preparation method comprises the steps that firstly, zinc sulfide microsphere nanoparticles with the uniform particle size are prepared by adopting a chemical homogeneous precipitation method; secondly, the zinc sulfide microsphere nanoparticles are calcinated under protection of a reducing atmosphere to carbonize trace organic substances, and then the red structure color materials with carbon black evenly distributed are obtained. According to the red low-angle-dependence zinc sulfide structure color materials and the preparation method thereof, the preparation method is simple and high in repeatability, and the technical problems that chemical organic substance color materials are prone to discoloring and harmful to a human body are solved; the technology operation process is simple and easy to operate, large-scale industrial production can be achieved, the method is suitable for construction of angle-free different-color structure color materials on the surfaces of various materials, and the wide application prospect is achieved; the prepared red zinc sulfide photonic crystal structure color materials are even in carbon black distribution, free of angle dependence, good in sphericity degree and uniform in particle size and have the wide application prospect on the fields of material displaying, sensing, catalyzing, various material surface coloring and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of structural color materials, and in particular relates to a low-angle-dependent red zinc sulfide structural color material and a preparation method thereof. Background technique [0002] Materials with high and low refractive indices are arranged alternately to form a periodic structure - photonic crystals, so that light of a specific wavelength cannot pass through the photonic band gap generated by it, thus producing structural color. Structural color is a kind of physical coloration, which has the advantages of bright color, never fading, environmental friendliness, and short preparation cycle. In recent years, through the ordered self-assembly method of colloidal microspheres, opal structure photonic crystals can be formed, and finally the light forms on the surface of photonic crystals with a periodic structure through dry radiation, diffraction, scattering, etc., resulting in colorful s...

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Problems solved by technology

Some researchers have also proposed that adding a small amount of black pigment can improve the color saturation, and can effectively reduce the dependence of the structural color on the angle, and achieve the effect that the structural color remains unchanged as the viewing angle changes (CN103173039A, 102702791A, 103788770A), but the above methods The disadvantage is that in the preparation of photonic crystal structural color film, it is necessary to mix the powder with a small amount of carbon black or black pigment to form a film. Small environmental fluctuations will have a great impact on the quality of the film, so it is difficult to be widely used

However, so far, there are no reports on the preparation of such short-range ordered structure and high-saturation mechanism color glazes using materials such as sulfides.

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