端羟基聚丁二烯（HTPB）推进剂固化反应动力学及固化过程研究

Research on curing reaction kinetics and curing process of hydroxy-terminated polybutadiene (HTPB) propellants.

作者信息

Guo Zhiming, Wang Yiliang, Chiumsenti Michele, Wu Yuheng, Zhen Shaocong, Liu Hanwen, Rossi Riccardo, Fu Xiaolong

机构信息

Departament d'Enginyeria Civil i Ambiental (DECA), Universitat Politécnica de Catalunya (UPC), Jordi Girona 1, Barcelona, 08034, Spain.

School of Mechatronics Engineering, North University of China, Taiyuan, 030051, China.

出版信息

Sci Rep. 2025 Jul 1;15(1):21006. doi: 10.1038/s41598-025-07125-z.

DOI:10.1038/s41598-025-07125-z

PMID:40593135

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12217444/

Abstract

Hydroxyl-terminated polybutadiene (HTPB) propellants are high-performance solid propellants widely used in aerospace and military applications. By combining experimental and theoretical approaches, the curing process was analyzed using differential scanning calorimetry (DSC) to obtain reaction data at various heating rates. A thermochemical model and a finite-element model were developed to simulate the curing process, revealing the evolution of temperature and curing degree. The results indicate that higher heating rates significantly accelerate the curing reaction, reducing the curing time. The close agreement between the simulation and experimental data validates the reliability of the model. Future work could expand the model to include additional practical factors, such as material impurities and complex working conditions, to further optimize the HTPB propellant curing process.

摘要

端羟基聚丁二烯（HTPB）推进剂是广泛应用于航空航天和军事领域的高性能固体推进剂。通过结合实验和理论方法，利用差示扫描量热法（DSC）分析固化过程，以获得不同加热速率下的反应数据。建立了热化学模型和有限元模型来模拟固化过程，揭示温度和固化程度的演变。结果表明，较高的加热速率显著加速了固化反应，缩短了固化时间。模拟结果与实验数据的密切吻合验证了模型的可靠性。未来的工作可以扩展该模型，纳入材料杂质和复杂工作条件等更多实际因素，以进一步优化HTPB推进剂的固化过程。