Production method of the colloidal crystal film, the colloidal crystal film obtained by the method, and the colloidal crystal pigments obtained by using the same

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently producing, using a spay coating technique, a colloidal crystal film being fully smooth and having reflection peak of sufficiently high reflectivity in its reflection spectrum, and enabling a large-area film formation irrespective of the base material's form.;SOLUTION: The method for producing the colloidal crystal film incudes: the step of spray-coating a base material with a colloidal dispersion including: a dispersion medium component including at least one substance selected from the group consisting of monomers and polymers; and colloidal particles having an average size of 0.01-10 μm and a monodisperse degree represented by relationship (1): {monodisperse degree (unit:%)}=({the standard deviation of particle sizes}/{average particle size})×100 of 20% or less; wherein the colloidal particles are dispersed in a three-dimensional regular array state having reflection peak in the reflection spectrum in the dispersion medium component, and having a viscosity of 10-100 mPa s as determined at a shearing rate of 1,000 s^-1 at 25±0.1°C; so as to be 25-45 μm in the average thickness after polymerization to form a coating film on the base material; and the step of polymerizing the dispersion medium in the coating film to produce the objective colloidal crystal film with an average thickness of 25-45 μm immobilized in the form of a polymer on the base material.;COPYRIGHT: (C)2011,JPO&INPIT