Rapid Fabrication of Noniridescent Structural Color Coatings with High Color Visibility, Good Structural Stability, and Self-Healing Properties
2019
Meng, Fantao | Umair, Malik Muhammad | Iqbal, Kashif | Jin, Xin | Zhang, Shufen | Tang, Bingtao
Artificial construction of amorphous photonic structures (APSs) is an important approach for obtaining noniridescent structural colors and shows a great potential for practical applications in paints, textile coloring, display, or other color-related fields. However, the structural colors are usually dim because of the influence of incoherent scattering, and the point contact among the microspheres leads to poor structural stability. This paper presents an innovative strategy for constructing noniridescent structural color coatings with high color visibility, good structural stability, and self-healing properties by combining APSs with polymers. Color visibility is significantly improved without the addition of black light-absorbing substances because of the inherent properties of polysulfide microspheres. At the same time, the introduction of waterborne polyurea in the system enhanced the structural stability and imparted the self-healing properties. The prepared coatings can be applied to various substrates and even to the coloration of soft fabrics, which not only achieves excellent performance but can also be easily patterned on the bulk scale.
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