绿色阻垢剂的制备及阻垢性能研究

发布时间：2018-02-22 11:36

本文关键词： 阻垢剂聚天冬氨酸聚环氧琥珀酸阻垢性能 ESA/AMPS共聚物　出处：《安徽大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着工业的飞速发展,工业水的腐蚀结垢问题也迫待解决。腐蚀结垢严重危害了工业生产,阻滞了工业的发展。阻垢剂是解决结垢的主要途径之一,目前的阻垢剂主要有无机聚磷酸盐,含磷有机缓蚀阻垢剂,天然阻垢剂等。这些含磷阻垢剂虽然有一定的阻垢效果,但对环境也造成了一定的污染,不符合绿色环保和可持续发展的要求。随着绿色化学概念的提出,人们对于绿色化学品的不断追求,绿色环保阻垢剂的研发成为了国内外研究的重要课题。聚天冬氨酸和聚环氧琥珀酸是近年来研发的两种新型阻垢剂,无毒,无污染,易生物降解,符合绿色环保的要求,是绿色新型高分子材料。它们的用途十分广泛,涉及到工业水处理,医药,农业,生物等各个行业。聚天冬氨酸和聚环氧琥珀酸对碳酸钙垢,硫酸钙垢,硫酸钡垢等有很好的阻垢效果,已成为了21世纪国内外争相研究的热点。本文分别制备合成了聚天冬氨酸和聚环氧琥珀酸并对它们的阻垢性能进行了研究,具体研究内容及实验结果如下：本文第一部分首先简述了阻垢剂的定义,介绍了阻垢剂的种类,阻垢原理以及阻垢性能的评价方法。然后重点介绍了两种绿色环保阻垢剂聚天冬氨酸和聚环氧琥珀酸的制备方法和应用,对国内阻垢剂的现状及研究方向进行了展望。本文第二部分以马来酸酐和尿素为原料,磷酸为催化剂,二步法合成聚天冬氨酸(PASP)。用傅里叶红外光谱对PASP进行了表征,通过实验考察了各反应条件对聚天冬氨酸阻垢率的影响,并讨论了合成聚天冬氨酸的最佳工艺条件,包括马来酸与尿素的摩尔比,聚合反应温度,聚合反应时间等,实验得出在该工艺条件下所得PASP的阻垢效果最好。对PASP进行了生物降解性能测试,得出PASP为易生物降解阻垢剂。本文第三部分以顺丁烯二酸酐为主要原料,以钨酸钠为催化剂,二水合硫酸钙和氢氧化钙为双引发剂,合成了无氮、无磷和生物降解性好的绿色阻垢剂聚环氧琥珀酸(PESA)。分析了各种合成条件对PESA阻垢性能的影响,得出了合成PESA的最佳工艺条件。采用静态阻垢法考察了阻碳酸钙垢的性能,研究结果表明产物在循环冷却水系统中具有优异的阻垢性能。本文第四部分以介孔分子筛负载催化剂钨酸钠,催化合成环氧琥珀酸,该产物经高效液相色谱测试其产率可达95%以上。然后以组合引发剂引发环氧琥珀酸盐,聚合反应得到环保型水处理剂聚环氧琥珀酸(PESA)溶液,并按照国家标准对合成的水处理剂给予评价。考察了体系pH值、反应温度、引发剂的用量等对聚环氧琥珀酸阻垢性能的影响。并对其进行了生理学及生物降解性测试。本文第五部分以马来酸酐为原料,钨酸钠为催化剂,制备环氧琥珀酸(ESA)。将其与2-丙烯酰胺-2-甲基丙磺酸(AMPS)共聚得到ESA/AMPS共聚物。采用静态实验法评价共聚物阻磷酸钙垢和碳酸钙垢的性能,探讨了单体配比、引发剂用量、聚合时间、聚合温度、以及该阻垢剂投入量对碳酸钙和磷酸钙阻垢率的影响,并对其结果进行讨论。
[Abstract]:With the rapid development of industry, corrosion and scaling problems in industrial water is also urgent. The corrosion and scaling serious harm to the industrial production, the development of industry. The block scale inhibitor is one of the main ways to solve the scaling, scale inhibitors are mainly inorganic polyphosphate, organic phosphorus corrosion inhibitor, a natural inhibitor etc. These phosphorous scale inhibitor has some inhibition effect, but also caused certain pollution to the environment, does not meet the green environmental protection and sustainable development. With the development of the concept of green chemistry, people constantly pursuit for green chemical research, green scale inhibitor has become an important research topic at home and abroad. Polyaspartic acid and polyepoxysuccinic acid is two novel inhibitor, in recent years developed non-toxic, no pollution, easy degradation, meet the requirements of environmental protection, green new polymer materials. They are used The way is very extensive, involving industrial water treatment, medicine, agriculture, biology and so on. Polyaspartic acid and polyepoxysuccinic acid to calcium carbonate, calcium sulphate, barium sulfate has good inhibition effect, has become the hotspot of research at home and abroad in twenty-first Century. This paper has synthesized polyaspartic acid and polyepoxysuccinic acid and inhibition on their performance are studied, the research contents and results are as follows: the first part of this paper describes the definition of scale inhibitor, scale inhibitor were introduced, and the principle of evaluation scale to scale method. And then introduces the two kinds of green scale inhibitor polyaspartic acid and polyepoxysuccinic acid preparation method and application of the status quo and research direction of the domestic scale inhibitor were discussed. The second part of this paper using maleic anhydride and urea as raw material, phosphoric acid as catalyst, two Synthesis of polyaspartic acid (PASP). The characterization method of PASP using Fourier transform infrared spectroscopy, the effects of various reaction conditions on the influence of polyaspartic acid inhibition rate, and the optimum conditions for synthesis of poly aspartic acid is discussed, including the molar ratio of maleic acid and urea, polymerization temperature, polymerization reaction time, the experiment shows that the inhibition effects of PASP in the best conditions. The PASP was biodegradation test, it showed that PASP was a biodegradable inhibitor. In the third part, taking maleic anhydride two as main raw materials, with sodium tungstate as catalyst, two hydrated calcium sulfate and calcium hydroxide as initiator. The synthesis of nitrogen, phosphorus and free green scale inhibitor with good biodegradability of polyepoxysuccinic acid (PESA). Analyzed the influence of synthesis conditions on PESA scale inhibition performance, the optimum process conditions of the synthesis of PESA was used. The static scale inhibition method was used to investigate the properties of the calcium carbonate scale inhibition, the results show that the product has excellent scale inhibition performance in the cooling water system. The fourth part of this paper with mesoporous molecular sieve catalyst sodium tungstate, catalytic synthesis of epoxy succinic acid, the product by high performance liquid chromatography test and the yield can reach more than 95%. Then the combination triggered initiator epoxy succinate, polymerization of environment-friendly water treatment agent polyepoxysuccinic acid (PESA) solution, and evaluates the water treatment agent prepared in accordance with the national standards. The influences of pH value, reaction temperature, initiator dosage of poly epoxy succinic acid inhibition performance and its physiological. Learn and biodegradability test. In the fifth part, using maleic anhydride as raw material, sodium tungstate as catalyst, preparation of Epoxysuccinic acid (ESA). The 2- acrylamide -2- methyl propane sulfonic acid (AMPS) Co ESA/AMPS poly copolymer. The static performance experiment method to evaluate the resistance of copolymer of calcium carbonate and calcium phosphate scale, the effects of the monomer ratio, initiator concentration, polymerization time, polymerization temperature, and the amount of inhibitor on calcium carbonate and calcium phosphate inhibition rate, and the results were discussed.

【学位授予单位】：安徽大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ085.4

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