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首页> 外文会议>TP05-01 - TP05-20, TP05-23; Cooling Technology Institute Annual Conference; 20050228-0303; San Antonio,TX(US) >Finally, an Alternative to Azoles
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Finally, an Alternative to Azoles

机译：最后，替代Azoles

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Benzotriazole and its derivatives have been the dominant yellow metal corrosion inhibitors used in industrial cooling water for the last thirty years. By far, the most popular of these derivatives has been 4-5 methyl benzotriazole, or tolyltriazole. Despite the triazoles dominance, however, they do have weaknesses. Previous studies have shown that the thin tolyltriazole film can be easily penetrated by oxidizing biocides, such as chlorine. These tests found that, while the tolyltriazole film can be very resistant to breakdown in aqueous environments, the thinness of the film does not result in a forgiving barrier when breakdown occurs. The user must assure that there is residual azole inhibitor present to repair the damage. More recent tests have demonstrated that this need to maintain a residual amount of azole may be much more critical than previously suggested. These tests found that both benzotriazole's and tolyltriazole's films are surprisingly weak, even when not in the presence of oxidizing biocides. Their formed films break down immediately when no residual inhibitor is present. These findings demonstrated that the success of the azoles' corrosion protection relies solely on the immediate repair of damaged film by free inhibitor in the water, not in the formation of a tenacious, hydrophobic film. This paper presents studies that explore a new breed of yellow metal corrosion inhibitor that offers revolutionary improvements over the triazoles in a number of areas. This new inhibitor forms a protective film on the metal surface that is unequaled in its resistance to breakdown. The film is so durable that it is capable of maintaining corrosion protection for weeks without the presence of any residual inhibitor in solution - a feat that azoles are incapable of achieving. Detailed studies will be presented that compare the new inhibitor to triazoles, demonstrating how the advantages of the new inhibitor will provide cost, environmental, and application benefits to the user.
机译：在过去的三十年中，苯并三唑及其衍生物一直是用于工业冷却水的主要黄色金属腐蚀抑制剂。到目前为止，这些衍生物中最受欢迎的是4-5甲基苯并三唑或甲苯基三唑。尽管三唑占主导地位，但是它们确实有弱点。先前的研究表明，甲苯三唑薄膜很容易被诸如氯等氧化性杀菌剂渗透。这些测试发现，尽管甲苯基三唑膜在水性环境中非常抗击穿，但膜的薄度不会在击穿发生时产生宽容的屏障。用户必须确保存在残留的唑类抑制剂以修复损坏。最近的测试表明，保持残留量的唑的这种需求可能比以前提出的要紧得多。这些测试发现，即使不存在氧化性杀菌剂的情况下，苯并三唑膜和甲苯基三唑膜都非常薄弱。当没有残留抑制剂存在时，它们形成的膜立即破裂。这些发现表明，吡咯类化合物腐蚀防护的成功仅取决于水中游离抑制剂对受损膜的即时修复，而不取决于形成坚韧的疏水膜。本文提出的研究探索了一种新型的黄色金属缓蚀剂，该缓蚀剂在许多领域都比三唑类具有革命性的改进。这种新的抑制剂在金属表面形成了一层保护膜，其抗击穿能力无与伦比。该膜非常耐用，以至于它能够在不存在任何残留抑制剂的情况下维持数周的腐蚀保护-唑类无法实现这一壮举。将进行详细的研究，将新抑制剂与三唑进行比较，说明新抑制剂的优势如何为用户带来成本，环境和应用益处。

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