多基团低磷共聚物阻垢剂的合成及性能研究
Synthesis and performance study of multifunctional low-phosphorus copolymer scale inhibitors
宋绍富 1刘黎晨 1孙一昊1
作者信息
- 1. 陕西省绿色低碳能源材料与过程工程技术研究中心,陕西 西安 710065;西安石油大学 化学化工学院,陕西 西安 710065
- 折叠
摘要
采用过硫酸铵作为引发剂,以马来酸酐(MA)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)和次磷酸(HPA)为单体,合成一种新型低磷共聚物阻垢剂MA-AMPS-HPA,利用傅里叶变换红外光谱(FTIR)、扫描电镜(SEM)和X射线粉末衍射(XRD)与静态阻垢试验,分析了该共聚物的结构对CaCO3 生成的影响及阻垢性能.结果表明,阻垢剂适宜的制备条件为:单体配比nMA∶nAMPS∶nHPA为1∶0.8∶0.4,引发剂用量为10%(w),反应温度为90℃,反应时间为10 h.在未添加抑制剂的情况下,CaCO3 结晶主要以六面体方解石晶型为主,并含有少量文石晶型.添加MA-AMPS-HPA后,CaCO3 结晶为方解石、文石和球霰石混合物,表明该低磷共聚物对方解石的形成具有一定抑制作用.MA-AMPS-HPA的阻垢性能最高可达94.82%,优于PASP和PESA阻垢剂 20%以上,阻垢性能几乎接近含磷阻垢剂HEDP、PBTCA和ATMPA.
Abstract
The ammonium persulfate was used as an initiator,and maleic anhydride(MA),2-acrylamido-2-methylpropane sulfonic acid(AMPS),and phosphorous acid(HPA)were used as monomers to synthe-size a new low-phosphorus copolymer scale inhibitor MA-AMPS-HPA.Fourier transform infrared spectros-copy(FTIR),scanning electron microscopy(SEM),and X-ray powder diffraction(XRD)were used along with static scale inhibition tests to analyze the influence of the copolymer's structure on CaCO3 generation and scale inhibition performance.The results showed that the optimal preparation conditions for the scale inhibitor were:monomer ratio(nMA∶nAMPS∶nHPA)1∶0.8∶0.4,initiator dosage 10%(w),reaction tempera-ture 90℃,reaction time 10 h.Without scale inhibitor,CaCO3 crystals were mainly rhombohedral calcite,with a small amount of aragonite.After adding MA-AMPS-HPA,CaCO3 crystals were a mixture of calcite,aragonite and vaterite,indicating the low-phosphorus copolymer had a certain inhibitory effect on calcite formation.The highest scale inhibition efficiency of MA-AMPS-HPA up to 94.82%,over 20%higher than PASP and PESA inhibitors,and the performance was close to the phosphorus-containing inhibitors HEDP,PBTCA and ATMPA.
关键词
碳酸钙垢/共聚物阻垢剂/结构表征/阻垢性能Key words
calcium carbonate scale/copolymer scale inhibitor/structural characterization/scale inhibi-tion performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据