典型含能材料压延塑化过程模拟分析  

Simulation for plasticization process of typical energetic materials

作　　者：彭昭宇 薛平[1] 宋秀铎[2] 张军[2] 贾明印[1] PENG Zhaoyu;XUE Ping;SONG Xiuduo;ZHANG Jun;JIAMingyin(Beijing University of Chemical Technology,Beijing 100029,China;Xi'an Modern Chemistry Institute,Shanxi Xi'an 710065,China)

机构地区：[1]北京化工大学,北京100029 [2]西安近代化学研究所,西安710065

出　　处：《固体火箭技术》2019年第5期615-621,共7页Journal of Solid Rocket Technology

摘　　要：应用POLYFLOW软件模拟典型含能材料的压延塑化过程,得到了压延辊隙处物料的运动状态和流场分布情况。研究发现,随着辊筒的旋转,物料在辊隙上方会形成漩涡,仅有一小部分的物料会以较大速度通过辊隙;靠近辊筒表面的物料所受拉伸效果显著,辊隙上方物料流速最小,粘度最大,在拉伸和剪切的双重作用下实现塑化;减小辊隙,可使物料所受压力大幅增加,在保证安全的前提下,可适当增大辊筒速比,减小辊隙。模拟结果对含能材料压延塑化过程中的运动状态和工艺过程的优化提供了理论指导。POLYFLOW was used to simulate the calendering process of typical energetic materials and the motion state, flow field distribution of the materials in the calendering gap were obtained. It was found that as the roller rotates, the materials will form a vortex above the gap, and only a small part of the materials will pass through the gap at a relatively high speed. Materials near the surface of the rollers is subjected to a significant stretching effect, but the plasticization of materials above the gap of which the flow rate is the smallest and the viscosity is the largest, is achieved under the dual action of stretching and shearing. Reducing the gap can greatly increase the pressure on the materials. Under the premise of ensuring safety, the speed ratio of rollers can be appropriately increased and the gap can be reduced properly. The simulation results provide theoretical guidance for the motion state and the optimization of process during the calendering of energetic materials.

关 键 词：典型含能材料 压延塑化 POLYFLOW模拟 剪切拉伸 

分 类 号：V438[航空宇航科学与技术—航空宇航推进理论与工程]