聚N-马来酰甘氨酸的合成及其阻垢缓蚀性能的研究

发布时间：2018-05-12 23:45

本文选题：聚N-马来酰甘氨酸 + 酰胺羧酸　；参考：《现代化工》2017年12期

【摘要】：酰胺羧酸类化合物是性能优良的有机胺缓蚀剂,为了提高其溶解与阻垢性能,合成一种新型的高分子型酰胺羧酸水处理剂—聚N-马来酰甘氨酸,以高分子碳长链骨架取代传统酰胺羧酸缓蚀剂分子结构中憎水基团高级烷基。通过红外光谱(FT-IR)表征产物,化学需氧量测定法判断产品产率。考察了Ca~(2+)、HCO_3~-、水处理剂浓度、温度以及时间对阻碳酸钙垢效果的影响,并研究了产品在已发生腐蚀系统中的缓蚀效果。结果表明,药品投加质量浓度为20 mg/L时,阻碳酸钙垢率为95.44%,相对于温度与过量碳酸氢根离子浓度,水处理剂浓度对阻垢性能的影响最大,其他水质条件发生变化时,确保水处理剂与钙离子质量浓度比高于1∶20即可保证所需的阻垢效果,有效阻垢时间大于10 h。产品投加质量浓度为80 mg/L,缓蚀率为90.43%,在碳钢已发生腐蚀的条件下仍然有效。
[Abstract]:Amide-carboxylic acid compounds are excellent corrosion inhibitors of organic amines. In order to improve their solubility and scale inhibition, a novel polymeric water treatment agent of amide-carboxylic acid, poly (N-maleylglycine), was synthesized. The high alkyl group hydrophobic group in the molecular structure of traditional amide carboxylic acid corrosion inhibitor was replaced by high molecular carbon chain skeleton. The product was characterized by FT-IR and the yield of the product was determined by chemical oxygen demand method. The effects of concentration, temperature and time of Ca~(2 HCO3-, water treatment agent on the scale inhibition effect of calcium carbonate were investigated, and the corrosion inhibition effect of the product in the existing corrosion system was studied. The results showed that the scale inhibition rate of calcium carbonate was 95.4444 when the dosage of the drug was 20 mg/L, the effect of water treatment agent concentration on the scale inhibition performance was the greatest compared with the temperature and excessive bicarbonate ion concentration, while other water quality conditions changed. The required scale inhibition effect can be ensured by ensuring the ratio of water treatment agent to calcium ion mass concentration is higher than 1:20, and the effective scale inhibition time is more than 10 hours. The mass concentration of the product is 80 mg / L, and the corrosion inhibition rate is 90.43, which is still effective under the condition that the carbon steel has been corroded.
【作者单位】：南京林业大学生物与环境学院;
【基金】：国家自然科学基金面上项目(31270680) 江苏高校优势学科建设工程资助项目
【分类号】：TQ085.412

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