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首页> 外文期刊>Progress in Organic Coatings: An International Review Journal >Synthesis and properties of semi-crystalline hyperbranched poly (ester-amide) grafted with long alkyl chains used for UV-curable powder coatings
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Synthesis and properties of semi-crystalline hyperbranched poly (ester-amide) grafted with long alkyl chains used for UV-curable powder coatings

机译:UV固化粉末涂料用长烷基链接枝的半结晶超支化聚(酯酰胺)的合成及性能

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A series of semi-crystalline hyperbranched poly(ester-amide)s by modifying hydroxyl end groups of hyperbranched poly(ester-amide) (HP) with IPDI-C18 and IPDI-HEA in different ratios were synthesized and characterized by FTIR, NMR and GPC. Their crystallization behaviors and thermal properties determined by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) showed that the high substitution degree of hydroxyl groups of hyperbranched poly(ester-amide) (HP) with IPDI-C18 resulted in higher degree of crystallization and thus glass transition temperature (T-g) up to 43 degrees C. The photopolymerization kinetics investigated by photo-DSC showed that the obtained semi-crystalline hyperbranched resins have high photopolymerization rate and final unsaturation conversion, which is very promising for UV-curable powder coating applications. (c) 2007 Elsevier B.V. All rights reserved.
机译:合成了一系列的半结晶超支化聚酯酰胺,通过不同比例的IPDI-C18和IPDI-HEA修饰超支化聚酯酰胺(HP)的羟基端基,并通过FTIR,NMR和GPC。通过X射线衍射(XRD)和差示扫描量热法(DSC)测定其结晶行为和热性能,表明IPDI-C18对超支化聚(酯酰胺)(HP)羟基的高取代度导致更高的度数。结晶度,因此玻璃化转变温度(Tg)高达43摄氏度。通过光DSC研究的光聚合动力学表明,所获得的半结晶超支化树脂具有高的光聚合速率和最终的不饱和转化率,这对于紫外线固化非常有希望。粉末涂料的应用。 (c)2007 Elsevier B.V.保留所有权利。

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