衣康酸三元共聚物阻垢剂的合成及其阻垢性能的研究  

Research on the synthesis of itaconic acid terpolymer scale inhibitor and scale inhibition performance

作　　者：冯辉霞[1] 张嘉晨[1] 陈娜丽[1] 谭琳[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《应用化工》2017年第1期58-61,65,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51063003);国家科技部"科技人员服务企业行动项目"(2009GJG10041);甘肃省高校基本科研业务费(1105ZTC136)

摘　　要：以衣康酸(IA)、苯乙烯磺酸钠(SSS)、2,2-二羟甲基丙酸(DMPA)为单体,过硫酸铵为引发剂,采用水溶液自由基聚合法,合成了一种含有羧酸基、磺酸基和羟基的多元衣康酸共聚阻垢剂。研究了反应物单体配比、反应温度、反应时间、引发剂质量分数对共聚物阻垢剂阻垢性能的影响。结果表明,在IA∶SSS∶DMPA(摩尔比)=4∶1∶1.5,引发剂用量占单体质量分数的11%,反应温度为90℃,反应时间为2.5 h条件下制得的共聚物阻垢剂阻垢性能最佳。通过静态阻垢法进行了阻垢剂的阻垢性能的评定,当此三元共聚物阻垢剂加剂量为12 mg/L时,对CaCO_3的阻垢率可达94.9%,用红外光谱和扫描电镜对共聚物阻垢剂的结构和CaCO_3垢样进行了表征。其中扫描电镜表明,加入此衣康酸三元共聚阻垢剂后,CaCO_3呈现明显的疏松结构。Through free radical solution copolymerization,one novel scale inhibitor with integrating carboxylic acid group,sulfonic acid group and hydroxyl group has been synthesized by choosing itaconic acid（ IA）,sodium styrene sulfonate（ SSS） and 2,2-dimethylol propionic acid（ DMPA） as monomers and ammonium persulfate as initiator. The optimal synthesis conditions for the scale inhibitor was determined from the monomer ratio,reaction temperature,reaction time and mass ratio of initiator on the scale inhibition performance of the terpolymer. The results showed that the optimal conditions of synthesis were as follows：the mass ratio of ammonium persulfate to total monomer was 11%,the monomer molar ratio for n（ IA） ∶n（ SSS） ∶ n（ DMPA） was 4∶ 1∶ 1. 5,the reaction temperature was 90 ℃ and the reaction time was 2. 5 h.The scale inhibition ratio was evaluated by the static scale inhibition method can reach 94. 9% Ca CO3 inhibition at a level of 12 mg/L AA-SSS-DMPA. The structure of the synthesized AA-SSS-DMPA terpolymer was characterized by Fourier transform infrared spectrometer（ FTIR） and the Scanning electron microscopy（ SEM） was used to investigate the effect of AA-SSS-DMPA on morphology of calcium carbonate scale.The SEM photographs of CaCO3 crystals indicate that the crystal structure transforms to a loose shape after addition of the AA-SSS-DMPA.

关 键 词：衣康酸 共聚阻垢剂 2 2-二羟甲基丙酸 

分 类 号：TQ085[化学工程]