共聚物MA-TA-AA-AM-SH的反相乳液合成及其阻垢分散性能研究

以环己烷为分散介质,油∶水为1∶1.5,Span80-Tween80为乳化剂,过氧化氢为引发剂,以马来酸酐(MA)、牛磺酸(TA)、丙烯酸(AA)、丙烯酰胺(AM)和次亚磷酸钠(SH)为单体反相乳液合成共聚物(MA-TA-AA-AM-SH)阻垢剂。通过静态阻垢实验表明:综合经济因素,阻垢剂投加量达到10 mg/L对CaCO3、Ca3(PO4)2和CaSO4的阻垢效果较佳,分别为82.3%,95.9%和78%;在高温条件下对碳酸钙和磷酸钙分别有56.6%,68.9%较佳阻垢率;高pH、高硬度恶劣条件下对碳酸钙仍分别有40.8%,57.9%的较好阻垢率;投加量达到8 mg/L时对氧化铁的分散性能最佳,透光率为56.7%。并利用IR对其结构进行表征。该阻垢剂是一种较好耐苛刻条件的多功能阻垢分散性剂。

Study on reversed emulsion polymerization and its scale inhibition and dispersion ability of copolymer MA-TA-AA-AM-SH

Hexahydrobenzene is taken as the dispersion medium,the proportion of the oil∶water is 1∶1.5,Span80-Tween80 is used as emulsifier and hydrogen peroxide as the initiator,polymer MA-TA-AA-AM-SH was synthesized by reverse emulsion polymerization.By scale static beaker tests,the experimental results showed that its scale inhibition efficiency against CaCO3,Ca3(PO4)2 and CaSO4 were better when its dosage is 10 mg/L,82.3%,95.9% and 78%;in condition of high temperature,there are still ideal scale inhibition efficiency 56.6%,68.9% against CaCO3 and Ca3(PO4)2;there are better scale inhibition efficiency 40.8%,57.9% against CaCO3 in bad condition of high pH,high hardness.There is the best disperse property for Fe2O3 when the dosage is 8 mg/L,light transmittance is 56.7%.Its structure was characterized by IR.The multipolymer is a good versatile scale inhibition and disperse property agent adapting to bad condition.