Sustainable organic–inorganic hybrid coating system with multiple cure capabilities

IF 2.3 4区 材料科学 Q2 CHEMISTRY, APPLIED Journal of Coatings Technology and Research Pub Date : 2024-08-05 DOI:10.1007/s11998-024-00969-6
Tahereh Hayeri, Vijay Mannari
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Abstract

Organic–inorganic hybrid (OIH) coatings and thin films have been established as advanced materials owing to their unique combination of properties suitable for many current and emerging end-use applications. The difficulties in the deposition of such films under desirable cure conditions limit their application space. This study presents the development of a new generation of functional oligomers designed to cure independently under various cure conditions to produce OIH coatings. Specifically, we have meticulously designed and synthesized a high-solid organosilane oligomer with polyurethane backbone structure and alkoxysilane functionality. This study investigates high-solid OIH coating systems comprised of organosilane oligomer, alkoxysilane reactive diluents, and a diverse range of blocked catalysts for their effectiveness in curing under thermal, UV exposure, and ambient temperature conditions. Furthermore, we have explored the potential to combine these curing processes, offering the coating system with plural-cure capabilities. FTIR spectroscopy has been used to track the extent of cure by tracking relative intensities of alkoxysilane groups before and after curing. A comparative analysis of coatings cured by various techniques provided valuable insights into the underlying curing mechanisms and their impact on film properties. The outcome of this study suggests that these new generation versatile OIH coatings systems can be excellent candidates for sustainable advanced coating applications.

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具有多种固化功能的可持续有机-无机混合涂料系统
有机-无机杂化(OIH)涂层和薄膜因其独特的综合特性而成为先进材料,适用于许多当前和新兴的终端应用领域。但在理想的固化条件下沉积此类薄膜的困难限制了它们的应用空间。本研究介绍了新一代功能性低聚物的开发情况,这些低聚物可在各种固化条件下独立固化,从而生产出 OIH 涂层。具体来说,我们精心设计并合成了一种具有聚氨酯骨架结构和烷氧基硅烷功能的高固有机硅低聚物。本研究调查了由有机硅烷低聚物、烷氧基硅烷反应性稀释剂和多种封端催化剂组成的高固含量 OIH 涂料体系在热固化、紫外线照射和环境温度条件下的固化效果。此外,我们还探索了将这些固化工艺结合起来的可能性,从而使涂层系统具备多重固化能力。傅立叶变换红外光谱通过跟踪固化前后烷氧基硅烷基团的相对强度来跟踪固化程度。通过对采用不同技术固化的涂层进行比较分析,可以深入了解固化机理及其对薄膜性能的影响。这项研究的结果表明,这些新一代多功能 OIH 涂层系统可以成为可持续先进涂层应用的理想候选材料。
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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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