Polyurethane blends with nitrocellulose/nitroglycerin: exploring thermal properties for advanced propellant formulations

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2025-03-22 DOI:10.1007/s11144-025-02833-z

Manel Nourine, Moulai Karim Boulkadid, Sabri Touidjine, Samir Belkhiri, Djamal Belmehdi

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引用次数: 0

Abstract

This study concerns an in-depth analysis of the features of polyurethane mixed with double base noted DB (nitrocellulose/nitroglycerin) as a high-energy component. In this context, polymer blends of polyurethane/DB were prepared at various mass ratios, employing hydroxyl-terminated polyester prepolymer (Desmophen®1200) doped with nitrocellulose/nitroglycerin mixture. The formulated PU/DB blends were analyzed through Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Moreover, the prepared samples underwent thorough thermal analysis using thermogravimetric (TG) and differential scanning calorimetry (DSC) techniques. To delve deeper into the thermal decomposition of the formulated compositions and determine related kinetic parameters, isoconversional kinetic methods such as it-KAS, it-FWO, and VYA/CE were employed. The results indicate that incorporating DB into the PU binder positively affects the PU's characteristics. This includes an increase in energy release and a catalyzed thermal decomposition process.

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聚氨酯与硝化纤维素/硝化甘油共混物：探索先进推进剂配方的热性能

本研究深入分析了双基料DB（硝化纤维素/硝化甘油）作为高能组分混合的聚氨酯的特性。在这种情况下，以不同的质量比制备聚氨酯/DB的聚合物共混物，采用端羟基聚酯预聚物（desmoophen®1200）掺杂硝化纤维素/硝化甘油混合物。通过傅里叶变换红外光谱（FTIR）和x射线衍射（XRD）对配制的PU/DB共混物进行了分析。此外，制备的样品采用热重（TG）和差示扫描量热法（DSC）技术进行了彻底的热分析。为了深入研究配方成分的热分解过程并确定相关的动力学参数，采用了等转换动力学方法，如it-KAS、it- two和VYA/CE。结果表明，在PU粘结剂中掺入DB对PU的性能有积极影响。这包括能量释放的增加和催化的热分解过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.