Development and characterization of a simple and fast castor oil-based polyurethane coating

IF 3.1 3区 化学 Q2 POLYMER SCIENCE Polymer Bulletin Pub Date : 2024-09-19 DOI:10.1007/s00289-024-05494-5
Lucas Repecka Alves, Giovanni Miraveti Carriello, Guilherme Manassés Pegoraro, David Rodrigues Gomes, Maira de Lourdes Rezende, Aparecido Junior de Menezes
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Abstract

This study focuses on the development and characterization of polyurethane coatings using castor oil as a renewable source. Most castor oil-based polyurethane paints have a rather long curing process. Therefore, this study focused on the preparation of a polyurethane paint based on raw castor oil without the need for chemical modifications, in a quick and cost-effective manner. The methodology involved the preparation of the paint using castor oil, isocyanate, calcium carbonate, titanium dioxide, additives and solvents. The coatings were then characterized and compared with industrial polyurethane paint in terms of thermal properties, rheology, UV degradation, adhesion, water resistance, and resistance to salt spray corrosion. Results showed that the castor oil-based paint exhibited comparable rheological behavior to the commercial paint, with superior thermal stability. However, the industrial paint showed better performance in UV degradation and similar behavior in the adhesion tests. In the water resistance test, the castor oil-based paint proved to be superior to the commercial paint. The salt spray corrosion test revealed that the castor oil-based paint had superior corrosion resistance due to the higher proportion of castor oil in the formulation, which increases the crosslinking of the chains. This work offers a simple and fast method to prepare and substitute petrochemical polyols with castor oil in order to use renewable sources with promising properties.

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一种简单快速的蓖麻油基聚氨酯涂料的开发与表征
本研究的重点是利用蓖麻油这种可再生资源开发聚氨酯涂料并确定其特性。大多数蓖麻油基聚氨酯涂料的固化过程都相当长。因此,本研究的重点是以未加工的蓖麻油为原料,无需化学改性,快速、经济地制备聚氨酯涂料。制备方法包括使用蓖麻油、异氰酸酯、碳酸钙、二氧化钛、添加剂和溶剂制备涂料。然后对涂料进行表征,并在热性能、流变性、紫外线降解、附着力、耐水性和耐盐雾腐蚀性等方面与工业聚氨酯涂料进行比较。结果表明,蓖麻油基涂料的流变性能与商用涂料相当,热稳定性更好。不过,工业油漆在紫外线降解方面表现更佳,在附着力测试中表现相似。在耐水性测试中,蓖麻油基涂料优于商用涂料。盐雾腐蚀测试表明,蓖麻油基涂料具有更好的耐腐蚀性,这是因为配方中蓖麻油的比例较高,增加了链的交联度。这项工作提供了一种用蓖麻油制备和替代石化多元醇的简单而快速的方法,以便使用具有良好性能的可再生资源。
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来源期刊
Polymer Bulletin
Polymer Bulletin 化学-高分子科学
CiteScore
6.00
自引率
6.20%
发文量
0
审稿时长
5.5 months
期刊介绍: "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."
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