Abstract The rheological properties of energetic materials comprising nitroglycerin plasticized nitrocellulose were studied using rheological tests in a parallel plate rheometer. The Carreau-Yasuda equation was applied to calculate the zero-shear viscosity, and the dependence of solid additives, temperature and solvent content on zero-shear viscosity was developed. One can study flow characteristics of the energetic materials by observing the zero-shear viscosity instead of the effect of solid additives, temperature and solvent content. Additionally, the relationship between zero-shear viscosity and additives concentration was studied. The Kissinger-Akahira-Sunose (KAS) method was used to obtain the viscous flow activation energy, and the equation to describe the relationship between solid additives concentration and viscous flow activation energy was represented. The Zero-Shear Viscosity (ZSV) test showed that temperature was the predominant effect on the ZSV value at low solvent content, as the concentration of solid additives increased, the ZSV value decreased at low solvent content but increased at high one, however, there is an opposite trend when graphene concentration is above 0.1%. The viscous flow activation energy showed different changing trends with solid concentration that increased at different solvent content. The master curves were obtained by Time-Temperature Equivalence Principle, the viscosity prediction model has been established and showed a good agreement with the experimental data, compared with the test results, the viscosity prediction model is more accurate at low temperature (15°C-25°C). The obtained knowledge of the different equations will form a contribution to the research on extrusion process of this energetic material containing Cyclotrimethylenetrinitramine (RDX) and graphene, and the results obtained by this research have certain practical significance of the extrusion process for this energetic material.

中文翻译：

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固体添加剂对硝酸甘油增塑硝化纤维素流变性能的影响

摘要 在平行板流变仪上使用流变试验研究了含硝化甘油增塑硝化纤维素含能材料的流变特性。应用 Carreau-Yasuda 方程计算零剪切粘度，并开发了固体添加剂、温度和溶剂含量对零剪切粘度的依赖性。人们可以通过观察零剪切粘度而不是固体添加剂、温度和溶剂含量的影响来研究含能材料的流动特性。此外，还研究了零剪切粘度与添加剂浓度之间的关系。Kissinger-Akahira-Sunose (KAS) 方法用于获得粘性流动活化能，并给出了描述固体添加剂浓度与粘性流动活化能之间关系的方程。零剪切粘度 (ZSV) 测试表明，在低溶剂含量下，温度对 ZSV 值的影响最大，随着固体添加剂浓度的增加，ZSV 值在低溶剂含量下下降，而在高溶剂含量下增加，然而，当石墨烯浓度高于 0.1% 时，趋势相反。粘流活化能随着固体浓度的增加，在不同溶剂含量下呈现不同的变化趋势。根据时间-温度等效原理得到主曲线，建立了粘度预测模型，与试验数据吻合较好，与试验结果比较，粘度预测模型在低温（15°C-25°C）下更准确。所获得的不同方程的知识将对含环三亚甲基三硝胺(RDX)和石墨烯的这种含能材料的挤出工艺研究形成贡献，本研究所得结果对这种含能材料的挤出工艺具有一定的实际意义。