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首页> 外文期刊>Propellants, Explosives, Pyrotechnics >Cyanuric Acid/Epichlorohydrin Energetic Prepolymers
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Cyanuric Acid/Epichlorohydrin Energetic Prepolymers

机译：三聚氰酸/表氯醇高能预聚物

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摘要

In this work new energetic prepolymers are synthesised and characterised.The structure of the prepolymers exhibits the 1,3,5-s-triazine ring with lateral chains derived from the epichlorohy-drin ring opening.The chlorine atoms in these precursors are here substituted by azido groups.The presence of these groups was confirmed by FTIR and ~1H NMR spectroscopy and elemental and thermal analysis.OH group content in the energetic prepolymers was found slightly lower than expected having in view the used inert precursors,while molar mass values were similar.Whereas the precursors show an endothermic thermal decomposition,the synthesised prepolymers show a clear exothermic thermal decomposition in DSC analyses.Due to the presence of the 1,3,5-5-triazine ring,the exothermic peaks were observed in a wide range of temperatures.The measured glass transition temperatures vary from -15.5 deg C to - 43.3 deg C.High densjties and a wide range of viscosities were found.The synthesised energetic prepolymers are interesting candidates for binder formulations for use in insensitive munitions(IM)due to the presence of the 1,3,5-s-triazine ring in the structure and their energetic character.The good curing properties found in a first test and the possibility to tailor the properties of the prepolymers are other attractive characteristics.
机译：在这项工作中，合成并表征了新的高能预聚物。预聚物的结构表现出1,3,5-s-三嗪环，其侧链来源于表氯氢-drin开环，此处这些前体中的氯原子被取代FTIR和〜1H NMR光谱以及元素和热分析证实了这些基团的存在。考虑到使用的惰性前体，发现高能预聚物中的OH基含量略低于预期，而摩尔质量值相似前驱体表现出吸热分解，而合成的预聚物在DSC分析中表现出明显的放热分解。由于存在1,3,5-5-三嗪环，在宽范围内观察到放热峰。测得的玻璃化转变温度在-15.5摄氏度至-43.3摄氏度之间变化，发现具有高密度和宽范围的粘度。由于结构中存在1,3,5-s-三嗪环及其高能特性，聚合物是用于不敏感弹药（IM）的粘合剂配方的有趣候选物。调整预聚物性能的可能性是其他吸引人的特征。

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