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为了改善高燃速丁羟推进剂的低温力学性能 ,设计合成了AO系列界面助剂 ,并在丁羟高燃速实验配方中验证了它们的使用效能。结果表明AO助剂大幅度提高了高燃速实验配方的低温力学性能 ,在常温强度相当的条件下 ,- 4 0℃下最大伸长率由 4 0 %左右提高到 5 5 %以上。实验结果也显示助剂与粘合剂的表面张力值越接近 ,工艺性能越好。文中还通过漫反射红外光谱 (DRIR)和动态热机械分析 (DMA)对界面助剂的作用机理作了简要探讨。
In order to improve the low-temperature mechanical properties of high-burning-rate butyrolactone, AO series of interface additives were designed and synthesized, and their performance was tested in high-burning-rate high-oxygen experimental formula. The results show that the AO agent greatly improves the low temperature mechanical properties of high burning rate experimental formulations. Under the condition of room temperature strength, the maximum elongation at 40 ℃ is increased from 40% to above 55%. The experimental results also show that the closer the surface tension of additives and adhesives, the better the process performance. In this paper, the interaction mechanism of interface additives is also briefly discussed by using diffuse reflectance infrared spectroscopy (DRIR) and dynamic thermo-mechanical analysis (DMA).