摘要
以尿素和马来酸酐为原料合成聚天冬氨酸(PASP),最佳反应条件为马来酸酐与尿素摩尔比为1∶0.7,反应温度为200℃,反应时间3 h,催化剂为1∶1硫磷混酸,马来酸酐与催化剂质量比为1∶0.15,PASP的分子量可以达到13 000左右,与ATMPS进行配合使用,总质量浓度在15 mg/L情况下,20#钢的腐蚀率可以达到0.055 mm/a。
The molecular-weight of the poly-aspartic acid which is synthesized with urea and maleic anhydride can reach about 13 000, the best conditions of reaction as follows： the mole ratio of maleic anhydride to urea is 1 ： 0.7 ; reaction temperature is 200 ℃ ; reaction time is 3 h ; catalyst is the mixed acid of sulfuric acid and phosphoric acid which ratio is 1 ： 1, the mass ratio of maleic anhydride to the catalyst is 1：0. 15. By means of this product associated with ATMPS, when the total quality concentration is 15 mg/L, the corrosion rate of 20^# steel can achieve the status of 0. 055 mm/a.
出处
《应用化工》
CAS
CSCD
2008年第7期770-772,776,共4页
Applied Chemical Industry
关键词
聚天冬氨酸
阻垢
缓蚀
循环水
poly-aspartic acid
scale inhibition
corrosion
cooling water
