Preparation of Acrylic Copolymer Latex Modified by Fluorine, Silicon, and Epoxy Resin

A series of modified acrylic copolymer latices have been prepared through a semicontinuous emulsion copolymerization process with a variety of hydrocarbon monomers and (perfluoroalkyl) methyl methacrylate, vinyltriethoxysilicone, and phenol-formaldehyde epoxy resin. The composition of copolymer was analyzed by fluoride ion selective electrode analysis, F-19 NMR, FTIR, crosslinking degree determination, and epoxy-acetone method. The results showed that the fluorine monomer, silicon monomer and epoxy resin had copolymerized with acrylic monomers. The optimum mass ratio between the curing agent TEA and epoxy resin was 1.36 : 6. The determination results of stabilities (electrolyte stability freeze-thaw stability, high temperature stability and mechanical stability) of latices showed that the incorporation Of fluorine monomer and silicon monomer improved freeze-thaw stability and mechanical stability, whereas the epoxy resin did not have obvious effect oil the stabilities. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 112: 181-187, 2009