摘要
为了探索HMX颗粒级配对醇醛浇注型高聚物粘结炸药流变性能的影响,采用幂律模型和卡森模型,研究了HMX不同颗粒配比下的物料状态。结果表明,该物料属于具有触变性的假塑性流体。非牛顿指数n值与小颗粒含量呈负相关。低剪切速率(2.15 s^(-1))时,物料粘度随小颗粒含量增加出现极大值。高剪切速率(53.85 s-1)时,物料粘度与小颗粒含量呈正线性关系。物料的屈服值与小颗粒含量负相关,且中颗粒含量对物料屈服值的影响最显著。认为,n值越大、粘度越小、屈服值越低的物料流变性能更好。
To explore the effect of HMX gradation on the rheological properties of the aldol based polymer bonded explosive, the material state under different HMX particle gradation ratio was investigated by power law model and Casson model. The results show that the material is a pseudoplastic fluid with thixotropy. The non-Newtonian index (n value) is negatively correlated with the content of small particles. The viscosity of the material has the maximum value at low shear rate of 2.15 s^-1 and positive linear relationship at high shear rate of 53.85 s^-1 with the small particles content. The yield value of the material is negatively correlated with the content of small particles. Moreover, the content of the middle particles has the greatest effect on the yield value. Considering that the material with higher n value, lower viscosity and lower yield value has the better rheological properties.
作者
刘慧慧
郑申声
关立峰
史远通
蔡贾林
罗观
LIU Hui-hui ZHENG Shen-sheng GUAN Li-feng SHI Yuan-tong CAI Jia-lin LUO Guan(Institute of Chemical Materials, CAEP, Mianyang 621999, China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2016年第10期978-984,共7页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院化工材料研究所科技创新基金资助(KJCX-201408)
关键词
流变学
高聚物粘结炸药
流变性
级配
屈服值
rheology
polymer bonded explosive
rheological properties
gradation
yield value