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首页> 外文期刊>AATCC Journal of Research >Chain Extender of Waterborne Polyurethanes Used for Warp Sizing
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Chain Extender of Waterborne Polyurethanes Used for Warp Sizing

机译：用于经纱上浆的水性聚氨酯的扩链剂

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摘要

The effects of chain extender used in the extension of isocyanate-terminated pre-polymer during the preparation of waterborne-polyurethane (WPU) sizes were determined based on properties such as adhesion to fibers, film properties, desizability, and aerobic biodegradability. The extenders used included ethylene glycol (EG), butanediol (BD), hexanediol (HD), and ethylenediamine (EDA). The resulting effects and properties were strongly depended on the extenders. Diols were superior to EDA in increasing the molecular weights of extended WPUs, enhancing the adhesion to polyester fibers, and improving the film properties and aerobic biodegradability. EDA was unsuitable for the extension. For the diols, BD was the most preferred. Comparisons on the properties of the resulting WPUs versus PVA and starch were made.
机译：基于诸如对纤维的粘附性，膜性质，可脱脂性和需氧生物降解性的性质，确定在制备水性聚氨酯（WPU）胶料期间用于扩链异氰酸酯封端的预聚物的扩链剂的作用。使用的增量剂包括乙二醇（EG），丁二醇（BD），己二醇（HD）和乙二胺（EDA）。所产生的效果和性能在很大程度上取决于增量剂。二醇在增加扩展的WPU的分子量，增强与聚酯纤维的粘合性以及改善薄膜性能和有氧生物降解性方面优于EDA。 EDA不适合该扩展。对于二醇，BD是最优选的。比较了所得WPU与PVA和淀粉的性能。

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