摘要
采用乙二胺(EDA)、二乙烯三胺(DETA)、和三乙烯四胺(TETA)为反应中心核,甲醇为溶剂,丙烯酸甲酯(MA)为原料,通过迈克尔加成和酰胺化反应,合成3种不同类型的超支化聚酰胺-胺[PAMAM(EDA/DETA/TETA)],后用羟基亚乙基二膦酸(HEDP)分别对其进行改性,制备出3种端膦酸基超支化聚酰胺-胺类型的阻垢剂[PAMAM(EDA/DETA/TETA)-H2PO_(3)],并对其阻垢性能和阻垢机理进行研究。结果表明:超支化聚酰胺-胺的阻垢率未达到标准,而改性后的端膦酸基超支化聚酰胺-胺具有优异的阻垢性能,其中在高矿度下加药浓度为500 mg·L^(-1),PAMAM(EDA)-H2PO_(3)对CaSO_(4)、CaCO_(3)垢的阻垢率分别达到98.5%和90.1%,而且还发现此类型的阻垢剂具有耐高温、pH值应用范围广、持续时间长等优点。再结合分散性能测试和垢样分析,发现其阻垢机理主要与支化分子结构、聚合物的高分散性和引入的官能团有关。
With ethylenediamine(EDA),diethylenetriamine(DETA)and triethylenetetramine(TETA)as reaction centers,methanol as solvent and methyl acrylate(MA)as raw material,three different types of hyperbranched polyamide-amines[PAMAM(EDA/DETA/TETA)]were synthesized by Michael addition and amidation.Three kinds of phosphonic acid terminated hyperbranched polyamide-amine scale inhibitors[PAMAM(EDA/DETA/TETA)-H2 PO_(3)]were prepared by modifying 1-hydroxyethylidene-1,1-diphosphonic acid(HEDP),and their scale inhibition performance and mechanism were studied.The results show that the scale inhibition rate of hyperbranched polyamide-amines did not reach the standard,and the modified phosphonate terminated hyperbranched polyamide-amines had excellent scale inhibition performance.When the dosage of PAMAM(EDA)-H2 PO_(3) is 500 mg·L^(-1) at high salinity,the scale inhibition rates of CaSO_(4) and CaCO_(3) are 98.5%and 90.1%respectively.It is also found that this type of scale inhibitor has the advantages of high temperature resistance,wide pH application range and long du-ration.Combined with dispersion performance test and scale sample analysis,it is found that its scale in-hibition mechanism was mainly related to branched molecular structure,high dispersion of polymer and introduced functional groups.
作者
王洋洋
刘庆旺
范振忠
付沅峰
仝其雷
乔三原
WANG Yangyang;LIU Qingwang;FAN Zhenzhong;FU Yuanfeng;TONG Qilei;QIAO Sanyuan(Key Laboratory of Enhancing Oil and Gas Recovery,School of Petroleum Engineering,Northeastern University of Petroleum,Ministry of Education Daqing,Daqing 163188,Heilongjiang Province,China)
出处
《化学工业与工程》
CAS
CSCD
北大核心
2024年第3期35-45,共11页
Chemical Industry and Engineering
基金
黑龙江省自然科学基金项目(LH2020E014)。
关键词
超支化聚酰胺-胺
羟基亚乙基二膦酸
阻垢性能
阻垢机理
hyperbranched polyamide-amine
1-hydroxyethylidene-1,1-diphosphonic acid
scale inhibi-tion performance
scale inhibition mechanism
