含能材料2025，Vol.33Issue(11)：1300-1312,13.DOI:10.11943/CJEM2025069
含能材料单螺杆挤出过程热分解程度计算
Calculation of Thermal Decomposition Degree during Single Screw Extrusion Process of Energetic Materials
严瑞晨 1何红 1邢宇 1王荣鑫 1赵承志1
作者信息
- 1. 北京化工大学机电工程学院,北京 100029
- 折叠
摘要
Abstract
In the process of single screw extrusion molding,the materials are easily affected by process conditions,which leads to self-degradation and heat release,thereby posing potential safety hazards.So quantifying the decomposition heat release of materials during the extrusion process has practical significance.The experimental and simulation methods were combined to in-vestigate the thermal decomposition phenomenon of energetic materials during extrusion process based on the self-developed fi-nite element secondary development subroutine.Combining the thermal decomposition kinetics model of materials,a thermo-chemical coupling method was proposed to calculate the thermal decomposition degree,temperature rise and the maximum temperature difference between inlet and outlet of energetic materials during extrusion.The influence of process conditions on the thermal decomposition degree of materials was also examined.Additionally,a material thermal decomposition experimental apparatus was built to validate the feasibility of the proposed thermal-chemical coupling method.The results show that under the condition of a screw speed of 10 r·min-1,compared with ignoring material thermal decomposition,the highest temperature dur-ing the screw extrusion process considering the decomposition heat release of materials increased by 0.91 K,and the highest pressure decreased by 8.2%.The decomposition degree of materials is the combined effect of material temperature increase and residence time.Compared to increasing the rotational speed,raising the temperature of barrel presents a greater effect on the thermal decomposition of materials.关键词
单螺杆挤压/含能材料/热分解/流变性能/分解度Key words
single screw extrusion/energetic materials/thermal decomposition/rheological behavior/decomposition degree分类
武器工业引用本文复制引用
严瑞晨,何红,邢宇,王荣鑫,赵承志..含能材料单螺杆挤出过程热分解程度计算[J].含能材料,2025,33(11):1300-1312,13.
