摘要
用DSC和TG DTG等热分析手段研究了过冷态和结晶态的键合剂 1,1’ (1,3 苯二羰基 )双 2 甲基氮丙啶(HX 75 2 )的热行为 ,在 - 80℃～ 10 0℃范围内 ,除了过冷态在 - 37.6℃的玻璃化转变和结晶态在 36 .8℃～ 42 .9℃的熔融外 ,没有任何其它物理化学变化。亚稳态的过冷液体比结晶态有较大的分解热。HX 75 2有复杂的分解过程 ,第一步分解失重虽小 ,但放热量很大 ,说明分子结构发生重大变化。
The thermal behavior of either bulk-crystallized solid or super-cooled liquid of bonding agent 1,1′-(1,3-phenylenedlcarbonyl) bis-2-methyl-aziridine(HX-752)was investigated by DSC and TG-DTG. No physics and chemistry changes were found in the range of -80°C ∼ 100°C except that the super-cooled liquid transform to the glass at -37.6°C and the crystallized solid melt at 36.8°C ∼ 42.9°C. The decomposition heat for metastable super-cooled liquid is greater than that of crystallized solid. It is shown that thermal decomposition process of HX-752 is complicated although the mass-loss is relatively small, the release heat is great at the first step. It indicates that significant changes in the molecular constitution on the decomposition is happened.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2001年第3期258-260,共3页
Journal of Propulsion Technology
关键词
复合推进剂
键合剂
热分解
苯二羰基
双-2-甲基氮丙啶
固体推进剂
热分析
Cooling
Crystallization
Differential scanning calorimetry
Molecular structure
Phase transitions
Pyrolysis
Solid propellants
Thermal effects
Thermoanalysis
Thermogravimetric analysis
