【摘要】 采用交流阻抗法和极化曲线法,研究了两种环境友好型水处理药剂聚冬天氨酸和钨酸钠的单一配方以及复配对3%NaCl溶液中铜的缓蚀效果。研究表明聚冬天氨酸和钨酸钠各自的单一配方对于铜均具有一定的缓蚀效果,其中聚冬天氨酸在浓度为40mg/L时效果最佳,钨酸钠在浓度为350mg/L时效果最佳。当二者复配使用时,在缓蚀剂总浓度为40mg/L时,聚冬天氨酸与钨酸钠配比为15时效果最佳,具有协同效应;在缓蚀剂总浓度为350mg/L时,聚冬天氨酸与钨酸钠配比为71,51,31,15,17时具有明显的缓蚀效果,且具有协同效应,其中以配比71为最佳。更多还原

【Abstract】 AC impedance method and polarization curve method were used to study the inhibition effects of environmental friendly inhibitors polyaspartic acid （PASP） and Na₂WO₄ , alone or in combination, for copper in 3% NaCl solution. The results indicated that both PASP and Na 2 WO 4 were able to inhibit the corrosion of the copper in the 3% NaCl solution. PASP at a concentration of 40 mg/L showed the best inhibition effect for copper, while Na 2 WO 4 gave the optimal inhibition action to copper at a concentration of 350 mg/L. When PASP and Na 2 WO 4 were formulated as a combined inhibitor, it showed good inhibition effect to copper at a total inhibitor concentration of 40 mg/L, and in this case PASP and Na 2 WO 4 showed synergistic inhibition effect, with the optimum ratio of PASP to Na 2 WO 4 to be 1:5. When the total inhibitor concentration of the combined inhibitor rose to 350 mg/L and PASP was mixed with Na 2 WO 4 at ratios of 7:1, 5:1, 3:1, 1:5, and 1:7, the combined inhibitor still showed good synergistic inhibition effect for copper in the saline water, and the optimum ratio of PASP to Na 2 WO 4 in this case was 7:1.更多还原