超支化聚酰胺-胺类阻垢剂制备及性能研究

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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)-H₂PO₃],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)-H₂PO₃对CaSO₄、CaCO₃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。

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	王洋洋
	刘庆旺
	范振忠
	付沅峰
	仝其雷
	乔三原

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

Abstract： 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)-H₂PO₃] 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)-H₂PO₃ is 500 mg·L^-1 at high salinity, the scale inhibition rates of CaSO₄ and CaCO₃ 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 duration. Combined with dispersion performance test and scale sample analysis, it is found that its scale inhibition mechanism was mainly related to branched molecular structure, high dispersion of polymer and introduced functional groups.

Keywords： hyperbranched polyamide-amine 1-hydroxyethylidene-1,1-diphosphonic acid scale inhibition performance scale inhibition mechanism

Received 2022-10-20;

Fund:黑龙江省自然科学基金项目(LH2020E014)。

Corresponding Authors: 刘庆旺,教授,E-mail:liuqingwang@163.com。 Email: liuqingwang@163.com

About author: 王洋洋(1995-),男,硕士,助理研究员,从事聚合物阻垢、废弃油基钻井液处理的研究。

引用本文:

王洋洋, 刘庆旺, 范振忠, 付沅峰, 仝其雷, 乔三原.超支化聚酰胺-胺类阻垢剂制备及性能研究[J]. 化学工业与工程, 2024,41(3): 35-45

WANG Yangyang, LIU Qingwang, FAN Zhenzhong, FU Yuanfeng, TONG Qilei, QIAO Sanyuan.Preparation and performance of hyperbranched polyamide-amine scale inhibitors[J]. Chemcial Industry and Engineering, 2024,41(3): 35-45

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