INTELLIGENT-TYPE SURFACE HYDROPHILICITY/HYDROPHOBICITY-CONVERTIBLE FABRIC FINISHING LIQUID AND PREPARATION METHOD THEREFOR

摘要

Disclosed are an intelligent-type surface hydrophilicity/hydrophobicity-convertible fabric finishing liquid and a preparation method therefor, wherein an effective constituent of the provided finishing liquid is a perfluoroalkyl azophenyl acrylate copolymer. A perfluoroalkyl azophenol as a starting raw material is subjected to an esterification reaction with acryloyl chloride to obtain an acrylate monomer containing perfluoroalkyl azophenyl, and same is then subjected to emulsion polymerization with hydroxyethyl methylacrylate and butyl acrylate to prepare an acrylate copolymer emulsion containing perfluoroalkyl azophenyl. By increasing the amount of an initiator during the emulsion polymerization, the resulting copolymer has a low degree of polymerization, a shorter copolymer molecule backbone, and a small degree of molecular chain entanglement, and therefore, the molecular isomerism capability of an azophenyl pendant is strong, with this being conducive to surface hydrophilicity/hydrophobicity conversion. The intelligent-type surface hydrophilicity/hydrophobicity-convertible fabric finishing liquid has mild preparation reaction conditions and a simple preparation process, and is suitable for industrialized production.