硝基- htpb复合推进剂的弹道和流变性能

IF 6.2 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2026-05-01 Epub Date: 2026-02-27 DOI:10.1016/j.combustflame.2026.114894

Deepak Govindaraju , Argha Bhattacharjee , Kumar Nagendra

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引用次数: 0

摘要

本文报道了硝基修饰端羟基聚丁二烯推进剂的性能。以高氯酸铵（AP）为氧化剂制备了两种推进剂Mix 1和Mix 2，固载率为80%。混合1推进剂含有常规HTPB，而混合2使用硝基改性HTPB（硝基-HTPB）。研究了硝基htpb粘结剂在固化过程中的流变性。所使用的固化剂为甲苯二异氰酸酯。利用热重分析（TGA/DTA）对推进剂的热分解进行了研究，揭示了含硝基htpb推进剂的能量特性。在1 - 7mpa的压力范围内，使用标准克劳福德弹测量燃烧速率。在7 MPa下，Mix 1和Mix 2的燃烧速率分别为10.7 mm/s和11.78 mm/s。与混合1相比，混合2的压力指数明显降低。通过静态电机测试来确定燃烧效率和喷嘴效率。在电机试验中，Mix 2和Mix 1的特征速度分别为1425 m/s和1392 m/s。钢绞线燃烧器的燃烧速率与静态电机测试得到的燃烧速率进行了验证。

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Ballistic and rheological properties of nitro-HTPB composite propellant

This paper reports the characterization of propellant containing hydroxyl-terminated polybutadiene (HTPB) modified with nitro (NO

_{2}

) group. Two propellants named Mix 1 and Mix 2 were prepared using ammonium perchlorate (AP) as an oxidizer with a solid loading of 80%. Mix 1 propellant contained conventional HTPB, while Mix 2 used nitro-modified HTPB (nitro-HTPB). The rheology of nitro-HTPB binder was studied during curing process. The curing agent used was toulene diisocyante. The thermal decomposition of the propellant was studied using thermogravimetric analysis (TGA/DTA) which revealed energetic nature of propellant containing nitro-HTPB. The burn rate was measured in the pressure range of 1–7 MPa using a standard Crawford bomb. The burn rate of Mix 1 and Mix 2 was found to be 10.7 mm/s and 11.78 mm/s at 7 MPa. The pressure index of Mix 2 was observed to be much lower compared to Mix 1. Static motor testing was conducted to determine the combustion efficiency and nozzle efficiency. Characteristic velocity of Mix 2 and Mix 1 was found to be 1425 m/s and 1392 m/s respectively, in the motor test. Burn rates from the strand burner were validated with the burn rate obtained from static motor tests.

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来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.