[1]林高明①,王苏炜①,王彦杰②,等.聚合物基熔铸炸药螺旋立式挤注过程的流场仿真研究[J].爆破器材,2022,51(05):12-19.[doi:10.3969/j.issn.1001-8352.2022.05.003]
　LIN Gaoming,WANG Suwei,WANG Yanjie,et al.Simulation Research on Flow Field of Polymer Based Melt-Cast Explosive in Spiral Vertical Extrusion Process[J].EXPLOSIVE MATERIALS,2022,51(05):12-19.[doi:10.3969/j.issn.1001-8352.2022.05.003]
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聚合物基熔铸炸药螺旋立式挤注过程的流场仿真研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
51
期数:
2022年05
页码:
12-19
栏目:
基础理论
出版日期:
2022-10-11

文章信息/Info

Title:
Simulation Research on Flow Field of Polymer Based Melt-Cast Explosive in Spiral Vertical Extrusion Process
文章编号:
5705
作者:
林高明①; 王苏炜①; 王彦杰②; 张光普①; 肖磊①; 郝嘎子①; 姜炜①
①南京理工大学化学与化工学院国家特种超细粉体工程技术研究中心（江苏南京，210094）
②晋西集团江阳化工有限公司（山西太原，030041）
Author(s):
LIN Gaoming①;  WANG Suwei①;  WANG Yanjie②;  ZHANG Guangpu①;  XIAO Lei①;  HAO Gazi①;  JIANG Wei①
①National Special Superfine Powder Engineering Research Center of China, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
②Jiangyang Chemical Co., Ltd., Jinxi Industries Group Co., Ltd. (Shanxi Taiyuan, 030041）
关键词:
聚合物基熔铸炸药; 立式挤注; 流体仿真; 团聚体破碎; 假塑性流体
Keywords:
polymer based meltcast explosive;  vertical extrusion;  fluid simulation;  aggregate crushing;  pseudoplastic fluid
分类号:
TQ560
DOI:
10.3969/j.issn.1001-8352.2022.05.003
文献标志码:
A
摘要:
针对当前聚合物基熔铸炸药装药工序中的人机面对、手工作业问题，拟采用立式螺压工艺来实现药浆的连续挤注以及弹体的自动装药，故在表征药浆流变特性的基础上对其流场特征参数进行仿真分析。结果表明：液相载体的润滑作用以及剪切过程中固相颗粒的取向排列均会导致药浆表观黏度的下降。提高螺杆转速可以显著增大药浆的流动性及产能，但也会造成剪切速率的线性递增以及压力的阶梯状递增。同时，剧烈的剪切作用也会拓宽药浆的温度分布范围，并将最高温度提高18.6 ℃；需要借助芯部调温来削弱螺杆的剪切升温效应，确保工艺安全性。
Abstract:
In view of the humanmachine facing and manual operation in the current charging process of polymer based meltcast explosive, a vertical screw extrusion process was proposed to realize the continuous extrusion of slurry and automatic charging of the projectile. Therefore, on the basis of characterizing the rheological characteristics of the slurry, the flow field characteristic parameters were simulated and analyzed. Results show that the lubrication effect of the liquid carrier and the orientation alignment of the solid particles during the shearing process will lead to the decrease of apparent viscosity of slurry. Increasing the screw speed can significantly increase the fluidity and productivity of the slurry, but it will also cause the linear increase of shear rate and the step increase of pressure. At the same time, the violent shearing action will also widen the temperature distribution range of the slurry and increase its maximum value by 18.6 ℃. It is necessary to use the core temperature adjustment to weaken the shear heating effect of the screw to ensure the process safety.

参考文献/References:

［1］张百磊, 常双君, 欧亚鹏. 浇注钝感PBX的研究进展及发展趋势［J］. 化学推进剂与高分子材料, 2015, 13(1): 42-45, 64.
ZHANG B L, CHANG S J, OU Y P. Research progress and development trend of casting desensitized PBX［J］. Chemical Propellants & Polymeric Materials, 2015, 13(1): 42-45, 64.
［2］胡雪垚, 沈飞, 肖玮, 等. 被动围压下浇注PBX炸药的动态力学性能研究［J］. 爆破器材, 2022, 51(1): 25-28, 34.
HU X Y, SHEN F, XIAO W, et al. Dynamic mechanical properties of a cast PBX explosive under passive confinement［J］. Explosive Materials, 2022, 51(1): 25-28, 34.
［3］陈春燕, 郭昕, 孙培培, 等. 一种高粘态聚合物基熔铸炸药粘度的测试方法: CN111006969A ［P］. 2020-04-14.
［4］郭昕, 陈春燕, 孙培培, 等. 一种聚合物基熔融炸药：CN111039733A ［P］. 2020-04-21.
［5］张蒙蒙, 罗一鸣, 王红星, 等. 聚合物基与传统熔铸载体炸药的工艺性差异研究［J］. 爆破器材, 2021, 50(3): 29-34.
ZHANG M M, LUO Y M, WANG H X, et al. Study on technological difference between polymer based explosive and traditional meltcast carrier explosive［J］. Explosive Materials, 2021, 50(3): 29-34.
［6］李敏, 薛平, 王江宁, 等. 典型含能材料单螺杆压伸过程模拟分析［J］. 固体火箭技术, 2020, 43(5): 594-601.
LI M, XUE P, WANG J N, et al. Simulation analysis for single-screw extrusion process of typical energetic material［J］. Journal of Solid Rocket Technology, 2020, 43(5): 594-601.
［7］KOWALCZYK J E, MALIK M, KALYON D M, et al. Safety in design and manufacturing of extruders used for the continuous processing of energetic formulations［J］. Journal of Energetic Materials, 2007, 25(4): 247-271.
［8］李雪珍, 薛平, 宋秀铎, 等. 含能材料加工过程模拟仿真的研究进展［J］. 塑料工业, 2021, 49(1): 1-6, 12.
LI X Z, XUE P, SONG X D, et al. Research progress in numerical simulation of energetic material processing［J］. China Plastics Industry, 2021, 49(1): 1-6, 12.
［9］李敏. 含能材料单螺杆压伸过程仿真模拟研究［D］. 北京: 北京化工大学, 2020.
LI M. Simulation research on the single-screw extrusion process of energetic materials ［D］. Beijing: Beijing University of Chemical Technology, 2020.
［10］孙业斌, 惠君明, 曹欣茂. 军用混合炸药［M］. 北京：兵器工业出版社, 1995.
［11］CHINESTA F, AUSIAS G. Rheology of non-spherical particle suspensions［M］. ISTE Press-Elsevier, 2016.
［12］马秀清, 金律, 张亚军, 等. 固体推进剂同向双螺杆元件混合性能模拟［J］. 中国塑料, 2018, 32(8): 131-136.
MA X Q, JIN L, ZHANG Y J, et al. Simulation of mixing performance of co-rotating twin-screw elements for solid propellants［J］. China Plastics, 2018, 32(8): 131-136.
［13］SUN D W, GARIMELLA S V, SINGH S, et al. Numerical and experimental investigation of the meltcasting of explosives［J］. Propellants, Explosives, Pyrotechnics, 2005, 30(5): 369-380.
［14］金大勇, 王亲会, 蒋秋黎, 等. 一种DNAN基熔铸炸药压滤装药工艺安全性分析［J］. 爆破器材, 2015, 44(3): 16-21.
JIN D Y, WANG Q H, JIANG Q L, et al. Safety analysis for filter press process of a DNAN based melt-cast explosive［J］. Explosive Materials, 2015, 44(3): 16-21.
［15］王建华, 吴大鸣, 许红, 等. 单螺杆挤出各区段数学模型的衔接方法研究［J］. 塑料， 2002, 31(6): 30-34.
WANG J H, WU D M, XU H, et al. Linkingup between different stages of the single screw extrusion model［J］. Plastics, 2002, 31(6): 30-34.
［16］杨忠久, 王瑞清. 锥形双螺杆挤出机自动控制原理与故障处理［J］. 门窗, 2009(10): 40-42.

备注/Memo

备注/Memo:
收稿日期：2022-03-09
基金项目：国家自然科学基金（12102194，22105103）；江苏省自然科学基金（BK20200471）；中国博士后科学基金（2020M673527，2021M691580）；江苏省博士后科研资助计划（2021K327）
第一作者：林高明（1997-），男，硕士研究生，主要从事混合炸药成型工艺研究。E-mail: lingaoming@njust.edu.cn
通信作者：姜炜（1974-），男，研究员，博导，主要从事微纳米含能材料制备及应用技术研究。E-mail:superfine_jw@126.com
更新日期/Last Update: 2022-10-04