Study on the chemical stability of benzoxazine-based phenolic resins in carboxylic acids
Study on the chemical stability of benzoxazine-based phenolic resins in carboxylic acids
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DOI：
10.1002/1097-4628(20010214)79:7
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发表时间：
2001-02
影响因子：
3
通讯作者：
Ho-Dong Kim;H. Ishida
中科院分区：
文献类型：
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作者：
Ho-Dong Kim;H. Ishida
研究了典型的双酚A型和伯胺型聚苯并恶嗪的化学稳定性。利用质子核磁共振光谱分析聚苯并恶嗪模型二聚体，发现曼尼希碱在羧酸溶液中是稳定的。有人提出，伯胺的性质是负责的羧酸和曼尼希碱模型二聚体之间发生的相互作用。因此，聚苯并恶嗪的化学稳定性也可能与胺的性质有关，这反过来又影响固化时形成的氢键网络结构的强度。© 2000 John Wiley & Sons，Inc.应用聚合物科学杂志79：1207-1219，2001
The chemical stability of typical polybenzoxazines based on bisphenol-A and primary amines was studied. Using proton nuclear magnetic resonance spectroscopic analysis of polybenzoxazine model dimers, it was found that the Mannich base is stable in a carboxylic acid solution. It is proposed that the nature of the primary amines is responsible for the interactions which take place between the carboxylic acid and the Mannich-base model dimers. As a result, the chemical stability of polybenzoxazines may also be related to the nature of the amines, which, in turn, influence the strength of the hydrogen-bonded network structure which develops upon cure. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 1207–1219, 2001