Preparation and performance study of organosilicon fluorine modified acrylate emulsion

In this study, a novel type of organosilicone fluoride modified acrylate emulsion was developed using the semi-continuous pre-emulsification method. The emulsion was synthesized by incorporating organic fluorine monomer and three types of organosilicone monomers. The effects of the organosilicon types, the amount of organosilicon and organofluorine on the performance of the emulsions were investigated. The structure of the organosilicon fluorine modified acrylate was characterized using infrared spectroscopy, and the properties of the emulsion and coating films were evaluated through thermal analysis, contact angle, and conventional tests. The results demonstrated that the optimal comprehensive performance of the organosilicon fluorine-modified acrylate emulsion was achieved when the reaction was conducted at 80 °C for 4 h with the MMA/BA ratio of 0.7:1. The addition amounts of A-171 silicone, organic fluorine, and electrolyte were determined to be 3, 1.25, and 0.25% of the total monomer, respectively. The contact angle of the emulsion coating reached 89° and the pencil hardness reached 6H. Furthermore, the thermal stability of the newly modified acrylate emulsion showed significant improvement, indicating its potential for broad applications.