高能增塑剂改性双基推进剂性能研究,Propellants, Explosives, Pyrotechnics

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高能增塑剂改性双基推进剂性能研究
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-10-19 , DOI: 10.1002/prep.202100085
Xiaobin Zou ₁ , Wenguo Zhang ₁ , Zehao Zhang ₁ , Yongjun Gu ₂ , Xiuchong Fu ₂ , Zhen Ge ₁ , Yunjun Luo ₁

Affiliation

为提高双基推进剂的低温力学性能，研究了三种含能增塑剂（同系二硝基醛缩醛增塑剂、叠氮封端缩水甘油基叠氮化物聚合物和酯封端缩水甘油基叠氮化物聚合物）对双基推进剂低温力学性能的影响。本文首先研究了硝化纤维（NC）/硝化甘油（NG）推进剂。结果表明，叠氮封端缩水甘油基叠氮聚合物（GAPA）是提高NC/NG推进剂低温力学性能的最有效增塑剂。然后研究了GAPA对ETPE全配方双基推进剂低温静态拉伸力学性能、热稳定性、动态热力学性能、密度和爆轰热的影响。发现含1% GAPA的双基推进剂综合性能最好，其在低温（-40℃）下的最大拉伸强度和断裂伸长率分别为56.16 MPa和10.63 %。与不含高能增塑剂的双基推进剂相比，断裂伸长率增加了 10.2%。同时，还研究了含1%GAPA的双基推进剂动、静态力学性能的相关性，得到了动态储能模量与静态拉伸强度的关系。2% 与不含高能增塑剂的双基推进剂相比。同时，还研究了含1%GAPA的双基推进剂动、静态力学性能的相关性，得到了动态储能模量与静态拉伸强度的关系。2 % 与不含高能增塑剂的双基推进剂相比。同时，还研究了含1%GAPA的双基推进剂动、静态力学性能的相关性，得到了动态储能模量与静态拉伸强度的关系。

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Study on Properties of Energetic Plasticizer Modified Double-Base Propellant

To improve the low-temperature mechanical properties of double-base propellants, the effects of three energetic plasticizers (geminal dinitro aldehyde acetal plasticizer, azido-terminated glycidyl azide polymer, and ester-terminated glycidyl azide polymer) on the low-temperature mechanical properties of nitrocellulose (NC)/nitroglycerin (NG) propellant were studied firstly in this article. It was found that azido-terminated glycidyl azide polymer (GAPA) was the most effective plasticizer to improve the low-temperature mechanical properties of NC/NG propellant. Then the effects of GAPA on the low-temperature static tensile mechanical properties, thermal stability, dynamic thermomechanical properties, density, and heat of detonation of fully-formulated double-base propellant with ETPE were studied. It was found that the double-base propellant with 1 % GAPA had the best comprehensive performance, and its maximum tensile strength and elongation at break at low temperature (−40 °C) were 56.16 MPa and 10.63 %, respectively. The elongation at break was increased by 10.2 % compared to the double-base propellant without an energetic plasticizer. Meanwhile, the correlation between dynamic and static mechanical properties of the double-base propellant with 1 % GAPA was also studied, and the relationship between the dynamic storage modulus and the static tensile strength was obtained.

更新日期：2021-11-05

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