In view of the IA / MA / AMPS terpolymer scale inhibitors. The effect of mass concentration of calcium ion,water temperature and p H of medium on the scale inhibition performance for calcium carbonate were investigated. The thermal stability of the copolymer scale inhibitors were analyzed via TG. The comparison experiments of copolymer scale inhibitor and commercial scale inhibitor were carried on the dispersion performance of scale inhibitors for ferric oxide. Results show that the ternary copolymer scale ...