CAJ | 학술논문

将聚琥珀酰亚胺(PSI)与天冬氨酸(ASP)、2-氨基乙磺酸(SEA)分别进行反应,对聚天冬氨酸进行改性,并对改性聚天冬氨酸的阻CaCO_3垢、分散Fe_2O_3和缓蚀性能进行了评定.实验结果表明:在PASP分子结构中引入羧基可以提高其阻垢率,而磺酸基的引入则会降低其阻垢率,当引入羧基的改性聚天冬氨酸质量浓度为6ms/L时,阻垢率达到了100%;磺酸基的引入可以大大提高聚天冬氨酸的分散性能,加药质量浓度为10mg/L,分散Fe_2O_3时上清液最小透光率为40.3%;羧基的引入有助于缓蚀性能的提高,加药质量浓度为100 mg/L时,比PASP的缓蚀率提高35%以上.
장취호박선아알(PSI)여천동안산(ASP)、2-안기을광산(SEA)분별진행반응,대취천동안산진행개성,병대개성취천동안산적조CaCO_3구、분산Fe_2O_3화완식성능진행료평정.실험결과표명:재PASP분자결구중인입최기가이제고기조구솔,이광산기적인입칙회강저기조구솔,당인입최기적개성취천동안산질량농도위6ms/L시,조구솔체도료100%;광산기적인입가이대대제고취천동안산적분산성능,가약질량농도위10mg/L,분산Fe_2O_3시상청액최소투광솔위40.3%;최기적인입유조우완식성능적제고,가약질량농도위100 mg/L시,비PASP적완식솔제고35%이상.
Modified polyaspartic acid has been prepared from taurine (SEA), aspartic acid (ASP) and polysuccin-imide (PSI). The effects of modified polyaspartic acid on the capacities of CaCO_3 scale inhibition, Fe_2O_3 dispersion and corrosion inhibition have been studied. The results show that introducing carboxylic acid group into molecular structure of PASP could greatly improve its scale inhibition rate, but the introducing sulfonic group into molecular structure of PASP could reduce its scale inhibition rate. When the dosage of modified polyaspartic acid with car-boxylic acid group is 6 mg/L, its scale inhibition rate is 100%. Introducing sulfonic group into molecular structure of PASP could greatly improve its capacity of dispersion. When its dosage is 10 mg/L, the least diaphaneity of the top liquid on dispersing iron oxide is 40.3%. Introducing carboxylic acid group into molecular structure of PASP could improve its corrosion inhibition rate. When its dosage is 100 mg/L, its corrosion inhibition rate is 35% higher than polyaspartic acid.