Patent ID: 8765229
Filing Date: 2014-07-01
Classification: B05D,C08K,C08L,C09D

Abstract:
1. A method for producing a porous thin film with adjustable light transmittance, comprising steps of: removing water from a polymer to obtain a dry polymer; mixing the dry polymer with a salt and a solvent to obtain a first solution; wherein the salt is lithium chloride with 30-50 wt % weight ratio of the salt over the polymer; completely dissolving the salt from the first solution by ultra sonic to form a second solution; coating the second solution on a glass plate to form a solution thin film; obtaining a composite thin film by placing the solution thin film into an exhaust cabinet; washing out the salt from the composite thin film to obtain a porous thin film; and adjusting a light transmittance the porous thin film by wetting or drying the porous thin film.