Abstract
Low molecular weight carboxyl-terminated liquid fluoropolymers with M n ranged from 2300 to 8000 were prepared by oxidative degradation of VDF-HFP copolymer. The factors to control M n of liquid fluoropolymers are types and contents of alkaline and oxidants. FTIR, 1H NMR, 19F NMR, 13C NMR and GPC were used to characterize the structure and M n of the liquid fluoropolymers. The cure reaction and properties of the carboxyl-terminated liquid fluoropolymers with epoxy resin were discussed. Thermal properties including thermal stability and T g of these cured fluoropolymer films were also examined. Cured films have good hydrophobic and oleophobic properties, as well as good chemical resistance.
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