通过偶然性挑战聚氨酯涂料中的有毒锡催化剂

IF 2.3 4区 材料科学 Q2 CHEMISTRY, APPLIED
Marcel Butschle, Markus Schackmann, Kim Dam-Johansen
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引用次数: 0

摘要

传统的聚氨酯(PU)催化剂,尤其是二月桂酸二丁基锡,因其毒性问题而备受关注,从而引发了人们对更安全的替代品的兴趣。令人意想不到的是,对一种市售抗菌剂的研究发现,它大大缩短了聚氨酯涂料的罐装寿命。实验表明,用抗菌剂作为催化剂配制聚氨酯涂料时,与传统的锡和锆催化剂相比,干燥时间和耐溶剂性都得到了改善。进一步分析表明,这是铜化合物的结果,而且可以证明,硫酸铜和醋酸铜也能达到类似的催化效果。这类铜盐作为锡催化剂的替代物还不常见。会上还讨论了活性化合物的异源催化或原位形成等可能机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Challenging toxic tin catalysts in polyurethane coatings through serendipity

Challenging toxic tin catalysts in polyurethane coatings through serendipity

Traditional polyurethane (PU) catalysts, especially dibutyl tin dilaurate, face scrutiny over toxicity concerns, leading to interest in safer alternatives. In an unexpected turn of events, research into a commercially available antibacterial agent revealed that it drastically reduced the pot life of PU coatings. Experiments show that when PU coatings were formulated with the antibacterial agent as catalyst, drying time and solvent resistance were improved as compared to traditional tin and zirconium catalysts. Further analysis showed that this was the result of copper compounds and it could be shown that a similar catalytic effect was achieved through Cu(II)-sulfate and Cu(II)-acetate. Such copper salts are not yet commonly known as replacements for tin catalysts. Possible mechanisms such as heterogenous catalysis or in-situ formation of the active compound were discussed.

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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research 工程技术-材料科学:膜
CiteScore
4.30
自引率
8.70%
发文量
130
审稿时长
2.5 months
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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