摘要
以TATB基高聚物粘结炸药(PBX)为原配方,制备了含氟弹性体(F2311)含量分别为0.05%、0.1%、0.2%、0.4%的4种改性配方,采用动态力学分析仪研究了F2311对PBX的三点弯曲蠕变性能影响。结果发现,加入0.4%的F2311使TATB基PBX的抗蠕变性能下降,减少F2311含量有利于提高其抗蠕变性能。含0.05%F2311的改性配方PBX在60℃/6 MPa下的蠕变应变略低于原配方。研究同时采用六元件模型对TATB基PBX及其改性配方的蠕变行为进行模拟。得到了蠕变曲线的本构方程,理论预测模型和试验数据吻合良好。根据时温等效原理,获得了TATB基PBX及其改性配方在参考温度30℃下的蠕变柔量主曲线,结果表明含0.05%F2311的TATB基PBX改性配方的长期抗蠕变性能优于原配方PBX。
In order to investigate the effects of fluoroelastomer（ F2311 ）content on the creep performance of TATB-based polymer bonded explosive（PBX）,4 PBX formations modified by adding 0.05,0.1,0.2,0.4 wt% F2311 were prepared,and their three-point bending creep behavior were studied by dynamic mechanical analyzer. Results show that the addition of 0. 4% F2311 make the creep resistance performance of TATB-based PBX decrease,and with the decrease of F2311,the creep resistance performance of PBX modified formulation enhances. When F2311 content drcreases to 0. 05 wt%,the creep strain of modified formulation is slightly smaller than original formulation at 60 ℃/6 MPa. Meanwhile ,six-element model was used to simulate the creep behaviors of PBX. The constitutive equations of creep curves were obtained. The predicted theoretical results coincide quite well with the experimental data. Based on time-temperature superposition principle,the master curves of TATB-based PBX and its modified formulation are ob-tained at 30 ℃. Results show that compared with original formulation PBX,the long-term creep resistance performance of modified formulation PBX with 0. 05 wt% F2311 is enhanced.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2014年第6期798-803,共6页
Chinese Journal of Energetic Materials
关键词
应用化学
高聚物粘结炸药
含氟弹性体
蠕变性能
时温等效
applied chemistry
TATB
polymer bonded explosive （PBX）
fluoroelastomer
creep performance
time-temperature superposition
