绿色阻垢剂ZU-101，HPMA的合成及性能研究

【作者】 张国华；

【导师】 王勤娜；

【作者基本信息】 北京化工大学 ， 应用化学， 2002， 硕士

【摘要】 在冷却水系统中，由于水垢的形成，降低了传热效率甚至阻塞管道，造成了巨大的经济损失。利用阻垢剂具有成本低效率高的特点，并能带来可观的经济效益。 聚合物阻垢剂是阻垢剂中最重要的一种。在目前应用于工业的阻垢剂中，但大多是生产过程有毒的环境非友好型的化学品，这与最近提出的“绿色化学”的理念相悖。因此，研制生产过程清洁，对环境无毒无害的阻垢剂是当前国内外研究开发的重点。 本课题以马来酸酐为主要原料合成了新型绿色阻垢剂ZU-101、以水为溶剂成功开发出了HPMA的绿色合成新工艺，探索出了最佳的合成条件，并分别对其结构进行了表征，并对其阻垢性能进行了分析。 ZU-101为聚天冬氨酸系列的阻垢剂，我们利用红外光谱与核磁共振对其结构进行了表征，实验结果表明，产品的结构中有肽键，从而表明了其具有生物降解性。通过对比测试，结果表明，其阻垢性能优于HEDP、HPMA。 HPMA即水解聚马来酸酐，我们利用水代替甲苯作溶剂，实现了HPMA生产过程的绿色化。通过对溴值等一系列指标的测试表明，所合成的产品符合优等品的要求。通过在高钙水中及地下水中对其的阻垢性能的测试，表明了所合成的产品是一种高效的阻垢剂。 在本课题中，我们运用极化曲线评价两种阻垢剂的缓蚀性能，两种阻垢剂是属于阳极保护型缓蚀剂，通过静态失重法进一步验证它们还具有较好的缓蚀性能。北京化工大学硕士研究生论文所合成的两种产品具有无毒无害、可生物降解的特点，合成生产工艺实现绿色化，因此代表了未来阻垢剂的发展方向，具有广阔的应用前景。更多还原

【Abstract】 The efficiency of heat transmission is reduced and the pipeline is blocked scale formation in cooling water system, so prodigious economic loss come into being. Scale inhibitor, which has low cost and high efficiency, is applied in scale inhibition, can bring about considerable economic benefit.Polymer scale inhibitor is a most important kind of scale inhibitor. In all kinds of scale inhibitors, which are applied in industry currently, most of them are poisonous and pernicious non-environmental-protection chemicals, which are contrary to the view of "green chemistry" which is put forward recently. Therefore, it is current orientation to research and develop environmental-protection- type scale inhibitor.In this paper,ZU-101, a new type of green scale inhibitor, was synthesized ,and a new-style green teenies of synthesis of HPMA was developed with H2O as solvent. The raw material of both products is maleic anhydride and the best synthesis condition is explored. Then the scale inhibition performance and structure were analyzed respectively.The structure of ZU-101, which belongs to the family of polyaspartic acid, was analyzed by infrared spectrum and NMR. The experiment result states that the product is biodegradable because of the existence of peptide bond. Comparation test states that it has better performance than HEDP and HPMA in scale inhibition.HPMA is the abbreviation of hydrolytic polymaleic anhydride. The test of bromine value etc. states that the product is excellent product. In high calcium hardness and underground water experiment, it behaves high performance.In this paper we evaluate the corrosion inhibition performance of products by using polarization curve, and the result states that the scale inhibitors weprepared are anode-protection type 0 and loss in weight technique further verifythe better anti-corrosion performance of two green inhibitors.The two products we prepared are avirulent and biodegradable, and are coincident with the request of "green chemistry". Thus they represent the orientation of scale inhibitor, and have a bright application future.更多还原