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首页> 外文期刊>Journal of Applied Polymer Science >Study on the Chemical Stability of Benzoxazine-Based Phenolic Resins in Carboxylic Acids
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Study on the Chemical Stability of Benzoxazine-Based Phenolic Resins in Carboxylic Acids

机译：苯并恶嗪基酚醛树脂在羧酸中的化学稳定性研究

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摘要

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 solutions. It is proposed that the nature of the primary amines is responsible for the interactions which take palce 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 amiens, which, in turn, influence the strength of the hydrogen-bonded network structure which develops upon cure.
机译：研究了典型的基于双酚A和伯胺的聚苯并恶嗪的化学稳定性。使用聚苯并恶嗪模型二聚体的质子核磁共振光谱分析，发现曼尼希碱在羧酸溶液中稳定。提出伯胺的性质是造成羧酸和曼尼希碱模型二聚体之间相互作用的原因。结果，聚苯并恶嗪的化学稳定性也可能与氨基的性质有关，继而影响固化后形成的氢键网络结构的强度。

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