Synthesis and Properties of Silicone/Nano-silica Modified Polyacrylate Emulsifier-free Emulsion

Silicone/nano-silica modified polyacrylate emulsifier-free emulsion was synthesized via the emulsifier-free emulsion polymerization and sol-gel technique.The emulsion was characterized by IR and transmission electron microscopy(TEM).Evaluating the obtained results,the optimal synthesis conditions were the alkyl vinyl sulfonate mass fraction of 3.5%,the vinysilicone oil mass fraction of 8%,the silane coupling agent mass fraction of 9%,and the tetraethoxysilane mass fraction of 6%.Increasing the dosage of vinysilicone oil and silane coupling agent increased the water-resistant ability of film.The silicone/nano-silica modified polyacrylate film containing 6 wt% of tetraethoxysilane had the tensile strength of 5.98 N/mm2.