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首页> 外文期刊>Polymers for advanced technologies >Development of biobased polyurethane-imides from maleinized cottonseed oil and castor oil
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Development of biobased polyurethane-imides from maleinized cottonseed oil and castor oil

机译：基于马来菌棉籽油和蓖麻油的生物化聚氨酯 - 胰蛋白酶的研制

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An eco-friendly coating system, which is largely biobased, has been developed from castor and cottonseed oil. Cottonseed oil was functionalized with maleic anhydride by "ene" reaction to give maleinized cottonseed oil (MACSO); the anhydride groups were reacted with isocyanates to yield -NCO terminated polyurethane prepolymer. The prepolymer was further chain extended with hydroxyl groups of castor oil to give polyurethane-imides (PUIs). The cross-linked films thus obtained had good mechanical properties, and the imide groups in the backbone improved the corrosion resistance of PUIs as revealed by potentiodynamic polarization study. With increasing content of MACSO, thermal stability, glass transition temperatures (T-g), tensile strength, and corrosion resistance of resulting PUIs significantly increased.
机译：从蓖麻油和棉籽油开发了一种很大程度上是生物化的环保涂料系统。 通过“烯酮”反应用马来酸酐官能化的棉籽油，得到马来因的棉籽油（Macso）; 酸酐基团与异氰酸酯反应，得到-NCO封端的聚氨酯预聚物。 预聚物进一步链延伸，用蓖麻油的羟基延伸，得到聚氨酯 - 酰亚胺（PUIS）。 由此获得的交联膜具有良好的机械性能，并且骨架中的酰亚胺基团改善了Puis的耐腐蚀性，如电位性极化研究所揭示的。 随着宏观的含量增加，热稳定性，玻璃过渡温度（T-G），抗拉强度和所得PUI的耐腐蚀性显着增加。

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