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首页> 外文期刊>Journal of Applied Polymer Science >Crosslinking reaction of epoxy resin (diglycidyl ether of bisphenol A) by anionically polymerized polycaprolactam: I. Mechanism and optimization
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Crosslinking reaction of epoxy resin (diglycidyl ether of bisphenol A) by anionically polymerized polycaprolactam: I. Mechanism and optimization

机译：阴离子聚合聚己内酰胺对环氧树脂（双酚A的二缩水甘油醚）的交联反应：I。机理与优化

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摘要

Different ratios of epoxy resin, diglycidyl ether of bisphenol A (DGEBA) and E-caprolactam (starting from 10:90 DGEBA and vice versa), were used to synthesize reactive DGEBA and polycaprolactam blends by the anionic polymerization Of E-caprolactam at 140degreesC. Anionic polymerization was conducted with a strong base such as sodium hydride as a catalyst along with a cocatalyst such as N-acetyl caprolactam. The reaction mechanism, possible cure reactions, and reaction conditions of the reactive blends were studied with Fourier transform infrared spectroscopy and differential scanning calorimetry. The experiments were carried to study the optimization ratio and the effect of the composition on properties such as hardness and tensile strength of the reactive blends. The DGEBA was crosslinked by polycaprolactam through the reaction of the oxirane group with the amide nitrogen, and the reaction was very fast. A ratio of 80:20 (DGEBA:epsilon-caprolactam) was optimum, and the resulting blend showed the highest tensile strength and hardness. (C) 2003 Wiley Periodicals, Inc. [References: 20]
机译：使用不同比例的环氧树脂，双酚A的二缩水甘油醚（DGEBA）和E-己内酰胺（从10:90 DGEBA开始，反之亦然），通过E-己内酰胺在140°C的阴离子聚合反应合成反应性DGEBA和聚己内酰胺共混物。用诸如氢化钠的强碱作为催化剂与诸如N-乙酰基己内酰胺的助催化剂进行阴离子聚合。用傅里叶变换红外光谱和差示扫描量热法研究了反应性共混物的反应机理，可能的固化反应和反应条件。进行实验以研究优化比例和组合物对诸如活性共混物的硬度和拉伸强度之类的性能的影响。通过环氧乙烷基团与酰胺氮的反应，聚己内酰胺使DGEBA交联，反应非常快。 80:20（DGEBA：ε-己内酰胺）的比例最佳，所得混合物显示出最高的拉伸强度和硬度。 （C）2003 Wiley Periodicals，Inc. [参考：20]

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