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首页> 外文期刊>RSC Advances >Preparation and characterization of novel multi-branched polymers in situ cured from benzoxazine/epoxy resin/primary amines blends
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Preparation and characterization of novel multi-branched polymers in situ cured from benzoxazine/epoxy resin/primary amines blends

机译：新型多支化聚合物的制备与表征原位从苯并恶嗪/环氧树脂/原发胺共混物中固化

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High performance polymers with multi-branched structures were prepared in situ from ddm-based benzoxazine (M), cycloaliphatic epoxy resin (T) and diaminodiphenylmethane (ddm) or hexamethylenediamine (6a) via controlling the curing reaction sequence of the system. The curing behavior, cross-linked structures and properties of the system were investigated by differential scanning calorimetry (DSC), Fourier transform infrared (FTIR), dynamic mechanical analysis (DMA) and mechanical properties test, respectively. The results suggest that the reaction between T and ddm or 6a was more easily processed than that of M and ddm or 6a, and the multi-branched polymers can be formed in situ in a ternary system based on M, T and ddm or 6a. The heat resistance and mechanical properties of the cured resins with multi-branched structures were greatly improved compared with the polybenzoxazine or poly-benzoxazine/epoxy resin systems. The obtained results provide a new approach to control the chemical cross-linked structures and properties of polybenzoxazines.
机译：通过控制系统的固化反应顺序，原位使用多支化结构与多支化结构的高性能聚合物原位制制地由DDM基苯恶嗪（M），脂环族环氧树脂（T）和二氨基二胺（DDM）或六亚甲基二胺（6A）。通过差示扫描量热法（DSC），傅里叶变换红外（FTIR），动态机械分析（DMA）和机械性能试验研究了系统的固化行为，交联结构和性能。结果表明，T和DDM或6A之间的反应比M和DDM或6A的反应更容易加工，并且可以基于M，T和DDM或6A在三元系统中原位形成多支化聚合物。与聚苯嗪或聚苯恶嗪/环氧树脂系统相比，具有多支化结构的固化树脂的耐热性和机械性能。所得结果提供了一种控制化学交联结构和络合异恶嗪的性质的新方法。

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