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首页> 外文期刊>Arabian Journal for Science and Engineering >New Promoter System for the Oxidative Curing/Drying of Unsaturated Polyester Resin Based on Ascorbic Acid Metal Complexes of Cobalt and Copper
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New Promoter System for the Oxidative Curing/Drying of Unsaturated Polyester Resin Based on Ascorbic Acid Metal Complexes of Cobalt and Copper

机译：基于钴和铜的抗坏血酸金属配合物的不饱和聚酯树脂氧化固化/干燥的新型促进剂系统

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摘要

Unsaturated polyester resin (UPR) can be transformed into valuable and high quality industrial parts like gears, spools, pipes, etc. Curing/drying of UPR required organic peroxide as a source of radical flux. Most commonly used organic peroxide is methyl ethyl ketone peroxide, MEKP. At ambient temperature MEKP provides the flux of radicals very slow, therefore, certain active transition metal salts are added as promoters. These promoters catalyzed the oxidative decomposition of peroxide into radicals hence curing/drying of UPR increases. The efficiency of the promoters depends on the stability of metal salts. In this paper we synthesized ascorbic acid complexes of cobalt and copper with different ratio of metal to ligand and investigate their curing/drying property in comparison with cobalt naphthenate a conventional promoter. The results showed that all complexes are promoters in drying/curing of UPR. The complex with 2:1 ligand to metal ratio is found to be more active in drying/curing of UPR in comparison with 1:1 ligand to metal ratio.
机译：不饱和聚酯树脂（UPR）可以转化为有价值的高质量工业零件，例如齿轮，线轴，管道等。UPR的固化/干燥需要有机过氧化物作为自由基通量的来源。最常用的有机过氧化物是甲乙酮过氧化物MEKP。在环境温度下，MEKP提供的自由基通量非常慢，因此，添加了某些活性过渡金属盐作为助催化剂。这些促进剂催化过氧化物氧化分解成自由基，因此UPR的固化/干燥增加。促进剂的效率取决于金属盐的稳定性。在本文中，我们合成了具有不同金属与配体比例的钴和铜的抗坏血酸配合物，并与环烷酸钴传统的促进剂相比，研究了它们的固化/干燥性能。结果表明，所有配合物都是UPR干燥/固化过程中的促进剂。与1：1配体与金属的比例相比，发现配体与金属的比例为2：1的配合物在UPR的干燥/固化中更具活性。

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