中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 119-126.DOI: 10.19491/j.issn.1001-9278.2025.12.019

• 机械与模具 • 上一篇    

平行同向双螺杆加工含能材料挤出安全特性研究

李明华1, 薛平1(), 王斌2, 赵荣2, 韩民园2, 张帅2, 韩京京2   

  1. 1.北京化工大学机电工程学院,北京 100029
    2.山西北方兴安化学工业有限公司,太原 030003
  • 收稿日期:2025-01-07 出版日期:2025-12-26 发布日期:2025-12-22
  • 通讯作者: 薛平,教授,从事高分子材料/特种材料加工成型的研究,xueping@mail.buct.edu.cn
    E-mail:xueping@mail.buct.edu.cn

Study on extrusion safety characteristics of parallel coaxial twin⁃screws for processing energetic materials

LI Minghua1, XUE Ping1(), WANG Bin2, ZHAO Rong2, HAN Minyuan2, ZHANG Shuai2, HAN Jingjing2   

  1. 1.College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
    2.Shanxi North Xing’an Chemical Industry Co,Ltd,Taiyuan 030003,China
  • Received:2025-01-07 Online:2025-12-26 Published:2025-12-22
  • Contact: XUE Ping E-mail:xueping@mail.buct.edu.cn

摘要:

为了提高含能材料在双螺杆挤出机生产过程中的安全性和加工效率,通过EDEM、Ludovic和Polyflow仿真软件对设计的平行同向双螺杆挤出过程进行模拟仿真,开展工艺条件对工艺过程安全性影响模拟仿真研究,得到含能材料在双螺杆挤出机混合塑化过程中的温度、压力和平均停留时间等参数,进而分析加工过程的安全性。结果表明,当螺杆转速为12 r/min时,加料速率推荐范围为5.6~8.4 kg/h;当螺杆转速为15 r/min时,加料速率推荐范围为5.6~11.2 kg/h,在此范围内有利于提高加工过程的安全性;物料的物性参数(幂律指数、稠度系数)对挤出的安全性影响较明显,因此实际试验中,需根据不同的工艺阶段,采用适当范围水分含量的物料,以提高加工的安全性。

关键词: 含能材料, 平行同向双螺杆, 仿真, 工艺条件, 安全性

Abstract:

Improving the safety and efficiency of processing energetic materials in twin⁃screw extruders is critical. This study investigates the impact of process conditions on extrusion safety using a simulation approach with EDEM, Ludovic, and Polyflow softwares. The parallel coaxial twin⁃screw extrusion process was modeled to analyze key parameters, including temperature, pressure, and average residence time of the material during mixing and plastication. Simulation results provide specific safe operating windows: at a screw speed of 12 r/min, the recommended feed rate is 5.6~8.4 kg/h; at 15 r/min, the safe feed rate range is 5.6~11.2 kg/h. Furthermore, the material's physical properties, specifically the power law index and consistency coefficient, were found to significantly influence extrusion safety. Therefore, to enhance process safety, it is recommended to select materials with an appropriate moisture content range tailored to different stages of the actual process.

Key words: energetic materials, parallel coaxial twin screw, simulation, process conditions, safety

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