TATB基高聚物粘结炸药及其粘结剂的玻璃化温度与DMA测量频率关系的研究

用动态力学分析（DMA）方法，研究了上种TATB基PBX及其粘结剂（氟聚物）的测量频率与玻璃化温度的关系。结果显示：在这四种氟聚物F2314、F2311、F2463、和F2603中，只有F2314存在明显的二次转变，这是由于F2314分子中具有较多的C－C1键所引起的。从测量频率与玻璃化温度之间的关系，得到PBX及春粘结剂的活化能数据。经比较发现：TATB基PBX中，极高填充量的TATB颗粒的存在会对粘结剂链段的构象运动产生明显的限制作用。

Study of Relationships between Glass Transition Temperatures and Test Frequencies on TATB-based PBXs and Their Binders Using DMA

Relationship between test frequency and glass transition temperature was studied for four TATB-based PBXs and their binders (fluoropolymers) ,by using dynamic mechanical analysis (DMA) method. Results showed that of the four fluoropolymers,F₂₃₁₄,F₂₃₁₁, ,F₂₄₆₃ and F₂₆₀₃ ,only F₂₃₁₄ has an ap-parent secondary transition,which is ascribed to the fact that there are much more C-Cl bonds attached to a F₂₃₁₄ molecule. Meantime,the activation energies of the PBXs and their binders were calculated from the relationship between test frequency and glass transitiontemperature for the PBXs and their binders. It followed from comparisons between the activation energies of the PBXs and their binders that present of high contented TATB particles in the PBX may cause an obvious limitation in conformational movement of polymeric segment. A simple model,which had been confirmed by SEM photos of some PBXs, was pres-ented to explain this phenomenon.