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Finally, an Alternative to Azoles

机译：最后，艾兹尔斯的替代品

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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：苯并三唑及其衍生物是过去三十年的工业冷却水中使用的主要黄金金属腐蚀抑制剂。到目前为止，最受欢迎的这些衍生物已经是4-5个甲基苯并三唑或甲苯基三唑。尽管统治着三倍，但他们确实有缺点。以前的研究表明，通过氧化杀杀菌剂，例如氯，薄苯基三唑膜可以容易地穿透。这些测试发现，虽然甲苯基三唑膜可以非常耐脱落在水环境中，但是当发生故障时，薄膜的薄度不会导致偏原屏障。用户必须确保存在残留的唑抑制剂来修复损伤。最近的测试已经证明，这种需要保持残留量的唑唑可能比以前所建议的更重要。这些测试发现，即使在不存在氧化杀生物剂的情况下，也发现苯并三唑和托利唑类的薄膜令人惊讶的弱。当没有残留的抑制剂存在时，它们形成的薄膜立即分解。这些调查结果表明，氮杂腐蚀保护的成功仅依赖于水中自由抑制剂的损坏膜的立即修复，而不是形成顽强，疏水薄膜。本文展示了探索新品种的黄金腐蚀抑制剂，这些腐蚀抑制剂在许多领域的三唑上提供革命性的改进。该新抑制剂在金属表面上形成保护膜，其在其抗衰弱的抵抗力下不等。该薄膜如此耐用，即在不存在溶液中存在任何残留抑制剂的情况下，它能够保持腐蚀保护 - 氮尔斯无法实现的壮举。将提出详细研究，使新抑制剂与三唑进行比较，展示新抑制剂的优势如何为用户提供成本，环境和应用效益。

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