含能固化剂的合成及应用研究

【作者】 林培谦；

【导师】 黄振亚； 张玉珍；

【作者基本信息】 南京理工大学 ， 材料工程， 2004， 硕士

【摘要】 以季戊四醇为起始剂，三氟化硼乙醚为催化剂，1，2—二氯乙烷为分散剂，环氧氯丙烷经阳离子开环聚合反应制成氯化聚醚多元醇(A)，A在N,N—二甲基甲酰胺中与叠氮化钠反应制得叠氮聚醚多元醇(B)，B与六亚甲基二异氰酸酯加成反应制得未见文献报道的叠氮固化剂。研究了不同叠氮取代率的叠氮聚醚多元醇的热分解行为和玻璃化温度，发现叠氮聚醚多元醇热分解分两步进行：第一步为255.06′C时，叠氮基团分解；第二步为346.28′C主链降解。随着叠氮化反应程度的加深，最大热分解温度升高，不同程度叠氮化取代率的叠氮聚醚多元醇的玻璃化温度(Tg)与叠氮化取代率(x)成线性关系。合成的含能固化剂与GAP有良好的物理相容性。GAP／含能固化剂体系与TEGDN有良好的物理与化学相容性；GAP／含能固化剂胶片的拉伸强度和断裂伸长率为0.7Mpa和129％，优于GAP／N100胶片的力学性能(对应值为0.53Mpa／56.5％)。可以预料合成的含能固化剂有一定的应用前景。更多还原

【Abstract】 Using pentaerythritol as initiator, boron trifluoride diethyl etherate as catalyst.dichloroethane as dispersion agent, the chloride polyether polyol (A) is synthesized based on the mechanism of cationic ring-opening polymerization of epiclilnrohyclrin.The azide polyether polyol (B) is synthesized, in DMF through A and sodium azide, and the non-reported azide energetic curing agent (C) is synthesized through the adduction of B and IIDI. The relationship of B’s thermal degradation and glass transition temperature with the percent of azide substitution is studied. It’s found that B is thermally degraded in two steps: first, the azide group degraded at 255.06T’ and then the main chain degraded at 346.28’C. With increasing the percent of azide substitution, maximum temperature of thermal degradation is also increscent, a linear relationship exists between the glass transition temperature of B and percent of azide substitution. The energetic curing agent C has good physical compatiblity with GAP. GAP/C system also has good physical and chemical compatiblity with TEGDN. The tensile strength /elongation of break of GAP/C test is 0.7 MPa/129%, which is better than GAP/N100 (0.5MPa/56.5% in literature). The energetic curing agent C has potential application.更多还原