论文:2017,Vol:35,Issue(6):961-966
引用本文:
程吉明, 李进贤, 侯晓, 沙宝林. 预应变对HTPB推进剂老化动态力学性能的影响[J]. 西北工业大学学报
Cheng Jiming, Li Jinxian, Hou Xiao, Sha Baolin. Effect of Prestrain on Dynamic Mechanical Properties of HTPB Propellant during Aging Process[J]. Northwestern polytechnical university

预应变对HTPB推进剂老化动态力学性能的影响
程吉明1, 李进贤1, 侯晓2, 沙宝林2
1. 西北工业大学 燃烧、热结构与内流场重点实验室, 陕西 西安 710072;
2. 中国航天科技集团公司四院四十一研究所, 陕西 西安 710025
摘要:
针对HTPB复合固体推进剂开展了70℃热力耦合加速老化试验,采用动态热机械分析仪测定了不同预应变老化作用下HTPB推进剂的动态力学参数,获得并分析了推进剂的储能模量、损耗模量及力学损耗温度谱等参数。结果表明,老化过程中预应变对HTPB推进剂动态力学性能有较大影响。在相同老化时间,随预应变的增大,HTPB推进剂高分子链柔性降低,玻璃化温度升高,玻璃化松弛活化能增大,力学损耗增大。无预应变老化条件下,随老化时间的增加,HTPB推进剂力学损耗降低,黏合剂氧化交联起主导作用,而15%预应变老化条件下,随老化时间的增加,HTPB推进剂力学损耗增加,基体损伤及填料/基体界面损伤对推进剂力学损耗起主导作用。
关键词:    复合固体推进剂    预应变    老化    动态力学性能    玻璃化转变温度   
Effect of Prestrain on Dynamic Mechanical Properties of HTPB Propellant during Aging Process
Cheng Jiming1, Li Jinxian1, Hou Xiao2, Sha Baolin2
1. Science and Technology on Combustion, Internal Flow and Thermo-Structure Laboratory, Northwestern Polytechnical University, Xi'an 710072, China;
2. The 41 st Institute of the Academy of China Aerospace Science and Technology Corporation, Xi'an 710025, China
Abstract:
The accelerated aging tests of HTPB (hydroxy-terminated polybutadiene binder) propellant under the interaction of thermal and prestrain were adopted to study the effect of prestrain on the mechanical properties of composite solid propellant. The dynamic mechanical parameters of HTPB propellant at different prestrain levels were obtained through dynamic mechanical tests and the temperature spectra of storage modulus, loss modulus and loss factor were analyzed. The results show that the prestrain during aging process has great influence on the dynamic mechanical properties of HTPB propellant. At the same aging time, with the increase of the prestrain, the flexibility of polymer chain decreases, as a result, the glass transition temperature of HTPB propellant increases. Besides, the activation energy of the glass relaxation process and the mechanical loss increase. For the HTPB propellant aged without prestrain, with the increase of aging time, the mechanical loss of HTPB propellant decreases due to the leading role of the oxidative crosslinking reaction of binder matrix. However, for the HTPB propellant aged under 15% prestrain level, the mechanical loss increases with the increase of aging time. Because the accumulated damage of binder matrix and the damage of interface between filler/matrix plays a dominant role in the mechanical loss of the propellant.
Key words:    Composite solid propellant    prestrain    aging    dynamic mechanical properties    glass transition temperature   
收稿日期: 2017-03-28     修回日期:
DOI:
通讯作者:     Email:
作者简介: 程吉明(1989-),西北工业大学博士研究生,主要从事固体推进剂贮存性能研究。
相关功能
PDF(3950KB) Free
打印本文
把本文推荐给朋友
作者相关文章
程吉明  在本刊中的所有文章
李进贤  在本刊中的所有文章
侯晓  在本刊中的所有文章
沙宝林  在本刊中的所有文章

参考文献:
[1] Layton L H. Effect of Aging-Strain on Propellant Mechanical Properties[R]. AIAA-1979-1245
[2] Francis E C, Breitling S M, Carlton C H. Strain Damage Effects on Chemical Aging[J]. Journal of Spacecraft, 1980, 17(1):63-64
[3] 常新龙,简斌,刘承武,等. HTPB推进剂定应变老化性能实验[J]. 推进技术, 2010, 31(5):576-580 Chang Xinlong, Jian Bin, Liu Chengwu, et al. Experiments on HTPB Propellant Aging Properties under Constant Strain[J]. Journal of Propulsion Technology,2010,31(5):576-580(in Chinese)
[4] Husband D M. Use of Dynamic Mechanical Measurements to Determine the Aging Behavior of Solid Propellant[J]. Propellants, Explosives, Pyrotechnics,1992,17(4):196-201
[5] Bohn M A, Peter E. Aging of the Binders GAP-N100 and HTPB-IPDI Investigated by Torsion-DMA[J]. Propellants Explosives Pyrotechnics, 1999, 24(3):199-205
[6] Fuente J L D L, Rodríguez O. Dynamic Mechanical Study on the Thermal Aging of a Hydroxyl-Terminated Polybutadiene-Based Energetic Composite[J]. Journal of Applied Polymer Science, 2003, 87(14):2397-2405
[7] Anders Thorin, Aurélie Azoug, Andrei Constantinescu. Influence of Prestrain on Mechanical Properties of Highly-Filled Elastomers:Measurements and Modeling[J]. Polymer Testing, 2012, 31(8):978-986
[8] Cerri S, Bohn M A, Menke K, et al. Aging of HTPB/Al/AP Rocket Propellant Formulations Investigated by DMA Measurements[J]. Propellants Explosives Pyrotechnics, 2013, 38(2):190-198
[9] 刘新国, 王广, 强洪夫, 等. NEPE推进剂老化性能的动态力学表征[J]. 含能材料,2008, 16(4):462-464 Liu Xinguo, Wang Guang, Qiang Hongfu, et al. Dynamic Mechanical Characterization of Aging Properties for Aged NEPE Propellant[J]. Chinese Journal of Energetic Materials,2008, 16(4):462-464(in Chinese)
[10] 高艳宾,陈雄,许进升,等. NEPE推进剂动态力学特性分析[J]. 推进技术, 2015, 36(9):1410-1415 Gao Yanbin, Chen Xiong, Xu Jinsheng, et al. Dynamic Mechanical Properties Analysis of NEPE Propellant[J]. Journal of Propulsion Technology,2015, 36(9):1410-1415(in Chinese)
[11] 杜磊, 彭松, 王洪范. HTPB推进剂动态力学响应常温段松驰转变物理本质[J]. 推进技术, 1995, 16(5):72-77 Du Lei, Peng Song, Wang Hongfan.The Physical Essence of α Relaxation Transition of HTPB Propellant in Dynamic Mechanical Measurements[J]. Journal of Propulsion Technology,1995, 16(5):72-77(in Chinese)
[12] Gao L L, Chen X, Zhang S B, et al. Mechanical Properties of Anisotropic Conductive Film with Strain Rate and Temperature[J]. Materials Science and Engineering A, 2009, 513-14(1):216-221