Photonic crystal structure chromogenic fabric and preparation method thereof

Abstract

The invention relates to a photonic crystal structure chromogenic fabric and a preparation method thereof, and belongs to the field of photonic crystal structure chromogenesis. The preparation methodof the photonic crystal structure chromogenic fabric comprises the following steps that (1), dispersion liquid of photonic crystal structure primitive nano microspheres is prepared, a photonic crystalstructure is constructed on the surface of a textile base material, and the photonic crystal structure chromogenic fabric is obtained; (2), an encapsulant solution is prepared, and the surface of thephotonic crystal structure chromogenic fabric is coated with the encapsulant solution, the mass fraction of an encapsulant in the encapsulant solution is 0.1-10%, and the encapsulant is selected fromone or a mixture of more of waterborne polyurethane, waterborne acrylate, waterborne urethane acrylate or waterborne organic silicon; and (3), the photonic crystal structure chromogenic fabric obtained in the step (2) is dried and cured in a drying device to obtain the photonic crystal structure chromogenic fabric.

Description

technical field [0001] The invention relates to a photonic crystal structure color-producing fabric and a preparation method thereof, belonging to the field of photonic crystal structure color-producing fabric. Background technique [0002] Textiles are usually colored with chemical colorants such as dyes or pigments. This traditional printing and dyeing technology usually has a large amount of water, alkali and salt, and it is difficult to treat wastewater in the later stage, resulting in serious waste of water resources and serious pollution problems. In nature, many organisms have brilliant and colorful structural colors, such as chameleons, opals, and peacock feathers. The colors are produced by the physical effects (diffraction, scattering, interference, etc.) of the organism's own special micro-nano structure and visible light. Yes, photonic crystal structure color is one of the important manifestations. A photonic crystal is a nanomaterial with a periodic dielectric ...

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Problems solved by technology

But hollow SiO 2 The preparation process of nanospheres is complicated, which limits the large-scale industrial application of this method in the textile field

Similarly, the method of encapsulating photonic crystals by photocuring to improve their structural stability will also affect the optical properties of photonic crystals (CN201810127322.0)

In addition, some researchers have tried to prepare soft nano-microspheres as structural units for assembling photonic crystals, and the preparation of flexible photonic crystal structure chromogenic films by external force shear-induced self-assembly technology can also achieve the effect of enhancing the stability of photonic crystal structures. However, the preparation process of flexible nanospheres is complicated, and external shear-induced self-assembly requires high processing temperature and complex special equipment, resulting in high energy consumption and high equipment investment (Zhao Q, Finlayson C E, Snowwell D R E , et al. Large-scale ordering of nanoparticles using viscoelastic shearprocessing[J]. Nature communications, 2016, 7(1): 1-10. CN201610329842.0)

The method of using polar small molecule additives to improve the stability of the photonic crystal structure is also mentioned (CN201910967023.2), but the structural stability and flexibility of the photonic crystal prepared by this method cannot meet the conventional application requirements in the textile field

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