Preparation of fluorinated acrylate emulsion by micro-jet pre-emulsification

This article prepared a kind of water and oil repellent fluorinated acrylate emulsion,using a micro-jet nanodispersion meter for pre-emulsification. The fluorine-containing acrylate, glycerol methacrylate,N,N-dimethylformamide,butyl acrylate and dipropylene glycol were used as monomer, NP-10,NP-8 and octadecyl trimethyl ammonium chloride as emulsifier and azobisisobutylamidine hydrochloride as initiator. The effects of pre-emulsifying process on the emulsion particle size and application performance were investigated. The results showed that the particle size distribution of the finishing agent which had been subjected to twice micro-jet emulsification under the pressure of 103. 425 MPa ranged from 50 to 57 nm,carrying positive charge,with stable physio-chemical properties. The water and oil contact angles of the cotton fabric treated with this emulsion were up to or over 140°and 145°,respectively.