FirePhysChem最新文献_第3页

Nitramino-polymer with ether bridges and 1,2,3-triazole subunits incorporated into the polymer chain 聚合物链中含有醚桥和 1，2，3-三唑亚基的硝基聚合物

FirePhysChem Pub Date : 2024-05-09 DOI: 10.1016/j.fpc.2024.05.002

Pavel S. Gribov , Natalia N. Il'icheva , Natalia N. Kondakova , Evgenia R. Stepanova , Anatoly P. Denisyuk , Vladimir A. Sizov , Varvara D. Dotsenko , Valery P. Sinditskii , Aleksei B. Sheremetev

{"title":"Nitramino-polymer with ether bridges and 1,2,3-triazole subunits incorporated into the polymer chain","authors":"Pavel S. Gribov , Natalia N. Il'icheva , Natalia N. Kondakova , Evgenia R. Stepanova , Anatoly P. Denisyuk , Vladimir A. Sizov , Varvara D. Dotsenko , Valery P. Sinditskii , Aleksei B. Sheremetev","doi":"10.1016/j.fpc.2024.05.002","DOIUrl":"10.1016/j.fpc.2024.05.002","url":null,"abstract":"<div><div>The creation of novel energetic polymers for future advanced solid composite propellants and gunpowder is an urgent area of modern research. A simple and effective waste-free cycloaddition reaction between dialkyne and diazide comonomers, both bearing nitramine groups, for the synthesis of an energetic polymer containing explosophoric units in the polymer chain has been described. Neither solvent nor catalyst is required for the production of this polymer, the comonomers used are readily available, and the product does not need any purification, and, importantly, this protocol scales well. The resulting polymer, <strong>C1Z1</strong>, (C<sub>14</sub>H<sub>22</sub>N<sub>12</sub>O<sub>8</sub>)<sub><em>n</em></sub>, was comprehensively characterized by spectral and physico-chemical methods. Compatibility with energetic plasticizers (<strong>NG, DNDEG, DANPE</strong>), thermochemical characteristics and combustion features indicate the prospects of target polymer <strong>C1Z1</strong> (density, <em>ρ</em> = 1.484 g/cm<sup>3</sup>; onset temperatures is 230 °C; positive enthalpy of the formation, Δ<em>H</em><sub>f</sub><sup>0</sup> = +636 kJ/kg; burning rate at 10 MPa is 9.5 mm/s) as a binder base for energetic materials. Comparison of <strong>C1Z1</strong> with nitrocellulose (<strong>NC</strong>) and their compositions with plasticizers revealed the advantages of <strong>C1Z1</strong>.</div></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"5 1","pages":"Pages 15-27"},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141043357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains 利用多层管状燃料颗粒展示混合火箭的双推力能力

FirePhysChem Pub Date : 2024-04-30 DOI: 10.1016/j.fpc.2024.04.006

Mengu Dinesh, Sachin Sonage, Kumar Nagendra

{"title":"Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains","authors":"Mengu Dinesh, Sachin Sonage, Kumar Nagendra","doi":"10.1016/j.fpc.2024.04.006","DOIUrl":"https://doi.org/10.1016/j.fpc.2024.04.006","url":null,"abstract":"<div><p>This study demonstrates the thrust modulation capabilities of a hybrid rocket motor employing a Multi-Layered Tubular (MLT) fuel grain. The MLT configuration involves arranging the fuel grains with distinct regression rates as layers. As combustion progresses, the regression rate changes based on the burning of each fuel layer, leading to variable thrust while maintaining a constant oxidizer flow rate. Variable-thrust fuel grains are suitable for diverse mission types, including employment in sounding rockets and cruise missiles, particularly those designed for anti-ship operations and missions wherein a boost-sustain thrust profile is required. The MLT fuel grains were designed for a boost-sustain phase thrust profile generally observed in missiles. Wax was used as a booster fuel, and wax with 20%EVA was used as a sustainer fuel. Two MLT configurations with different durations for the boost phase were demonstrated. During the tests, the boost-sustain phase was achieved successfully. However, a transition phase was observed while shifting from the boost to the sustain phase. The delay of the transition phase was observed to increase when the duration of the boost phase increased. The combined effect of axial variation of fuel regression rate and local mass flux is the reason for the transition phase. The Thrust Turn-Down Ratio (TDR) for Multi-Layered Tubular (MLT) fuel grains was calculated. At a web thickness (for booster fuel) of 4 mm, the TDR was approximately 1.23:1, and at a 5.5 mm web thickness, it was 1.28:1. Further, 20%Mg was added to the wax to increase the regression rate of booster fuel. The Wax/20%Mg fuel showed 41% and 14% improvement in regression rate and thrust, respectively. The TDR was improved marginally compared to pure wax-based MLT grain.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 354-368"},"PeriodicalIF":0.0,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266713442400021X/pdfft?md5=94f049f3556bcefe7a8dca0de1fb4be6&pid=1-s2.0-S266713442400021X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly energetic formulations of boron and polytetrafluoroethylene for improved ignition and oxidative heat release

FirePhysChem Pub Date : 2024-04-26 DOI: 10.1016/j.fpc.2024.04.005

Prawal P.K. Agarwal, Themis Matsoukas

{"title":"Highly energetic formulations of boron and polytetrafluoroethylene for improved ignition and oxidative heat release","authors":"Prawal P.K. Agarwal, Themis Matsoukas","doi":"10.1016/j.fpc.2024.04.005","DOIUrl":"10.1016/j.fpc.2024.04.005","url":null,"abstract":"<div><div>Boron (B) is desirable for energetic applications due to high gravimetric and volumetric energy densities. However, their use is limited because the native oxide shells on their surfaces limit oxidation and heat release by acting as a diffusion barrier and dead weight that does not contribute to heat release during oxidation. This paper reports a facile and efficient method of blending B with perfluoro additives to obtain materials with augmented heat release. We use polytetrafluoroethylene (PTFE) as a fluorine source that reacts with the oxide layer exothermally and use thermochemical analysis to identify the optimum composition of PTFE to extract high energy from B as a result of synergistic oxidation and fluorination reactions. The reduction in ignition temperatures of B is also observed due to its blending with PTFE. In this work, we determined B/PTFE blends with lower ignition temperature and higher oxidative heat release. These effects are due to the gasification of native surface oxide by fluorine via exothermic reactions that facilitate the enhanced reactions in the exposed metal core by eliminating the kinetic/thermodynamic barrier in the diffusion of the oxidizer to the B particle core. The study demonstrates the optimized formulation of highly energetic blends of B/PTFE for energetic applications.</div></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"5 1","pages":"Pages 1-6"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress of the combustion characteristics of dust/combustible gas hybrids 粉尘/可燃气体混合气体燃烧特性的研究进展

FirePhysChem Pub Date : 2024-04-20 DOI: 10.1016/j.fpc.2024.04.003

Jialin Li , Fen Li , Zhao Xu , Jianmin Yang , Jianjun Li

引用次数: 0

Study on the open-air NEPE solid propellant fire characteristics: Effect of altitude upon the flame performance through CFD 露天 NEPE 固体推进剂火焰特性研究：通过 CFD 研究高度对火焰性能的影响

FirePhysChem Pub Date : 2024-04-11 DOI: 10.1016/j.fpc.2024.04.004

Li Yu, Yupeng Hu, Guangmei Shi, Minghai Li, Yanhong Zhang

{"title":"Study on the open-air NEPE solid propellant fire characteristics: Effect of altitude upon the flame performance through CFD","authors":"Li Yu, Yupeng Hu, Guangmei Shi, Minghai Li, Yanhong Zhang","doi":"10.1016/j.fpc.2024.04.004","DOIUrl":"https://doi.org/10.1016/j.fpc.2024.04.004","url":null,"abstract":"<div><p>Solid propellant fires, characterized by uncontrolled combustion behaviors, are a common occurrence in industries that utilize solid propellants and can lead to significant consequences. However, there has been a lack of comprehensive studies on modeling and simulating the flame characteristics of NEPE solid propellant fires. This research aims to investigate the flame behaviors of large NEPE solid propellants at different altitudes using computational fluid dynamics (CFD). The flame's shape and temperature were examined based on experimental data under atmospheric conditions to validate the numerical model. The findings reveal that the simulated flame temperature slightly surpasses the experimental values, while the simulated flame length and width align well with the experimental measurements. Morewover, increasing altitudes result in shorter flame lengths and lower combustion temperatures. Furthermore, the study scrutinizes the influence of turbulence models on the flame behavior of NEPE propellant fires.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 341-353"},"PeriodicalIF":0.0,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266713442400018X/pdfft?md5=e6b03ec60efd376c2821123e36df8ace&pid=1-s2.0-S266713442400018X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermodynamics and energy properties of the lowest eutectic mixture of TNBA/MTNP TNBA/MTNP 最低共晶混合物的热力学和能量特性

FirePhysChem Pub Date : 2024-04-06 DOI: 10.1016/j.fpc.2024.04.001

Xiaolan Song , Zhihong Yu , Kanghui Jia , Dan Song , Yi Wang , Chongwei An , Fengsheng Li

{"title":"Thermodynamics and energy properties of the lowest eutectic mixture of TNBA/MTNP","authors":"Xiaolan Song , Zhihong Yu , Kanghui Jia , Dan Song , Yi Wang , Chongwei An , Fengsheng Li","doi":"10.1016/j.fpc.2024.04.001","DOIUrl":"10.1016/j.fpc.2024.04.001","url":null,"abstract":"<div><p>In light of the challenges posed by the low density, diminished energy levels, and shrinkage holes in the loading arise of the current cast-cured explosive liquid vehicle, TNT, the investigation of low-melting eutectic materials as potential substitutes for TNT has emerged as a focal point of research. By employing the solvent-nonsolvent method, the lowest eutectic mixture of TNBA(2,4,6-trinitro-3-bromoanisole)/MTNP(1-methyl-3,4,5-trinitropyrazole) was synthesized, distinguished by a moderate melting point and markedly elevated energy levels as compared to TNT. Comprehensive SEM, EDS, IR, XRD, and XPS analyses were conducted on the lowest eutectic mixture, substantiating the absence of any chemical interaction between TNBA and MTNP and affirming their exceptional compatibility. Moreover, an exploration into the thermal decomposition behavior and mechanism of the lowest eutectic mixture was undertaken, its mechanical sensitivity was tested, and its detonation performance was evaluated by EXPLO-5 software. The thermal decomposition parameters of the lowest eutectic mixture closely paralleled those of the precursor materials, with the thermal decomposition kinetics model function being identified as the Jander function. The impact sensitivity of the lowest eutectic was 48.1 cm and the friction sensitivity was 12%. Furthermore, the density of the lowest eutectic mixture surpassed 1.8 g/cm<sup>3</sup>, and its detonation velocity approached 8000 m/s, markedly surpassing the explosive performance of TNT.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 317-326"},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667134424000166/pdfft?md5=820d0b2aa510dcbda821f3f66e982b2d&pid=1-s2.0-S2667134424000166-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140786671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolysis mechanism and evolved gas analysis of a promising energetic carbamate-functionalized microcrystalline cellulose nitrate 一种前景看好的高能氨基甲酸酯功能化微晶硝酸纤维素的热解机理和演化气体分析

FirePhysChem Pub Date : 2024-04-03 DOI: 10.1016/j.fpc.2024.04.002

Hani Boukeciat , Ahmed Fouzi Tarchoun , Djalal Trache , Amir Abdelaziz , Djamal Belmehdi , Redha Meziani , Lokmene Boumaza , Thomas M. Klapötke

{"title":"Pyrolysis mechanism and evolved gas analysis of a promising energetic carbamate-functionalized microcrystalline cellulose nitrate","authors":"Hani Boukeciat , Ahmed Fouzi Tarchoun , Djalal Trache , Amir Abdelaziz , Djamal Belmehdi , Redha Meziani , Lokmene Boumaza , Thomas M. Klapötke","doi":"10.1016/j.fpc.2024.04.002","DOIUrl":"10.1016/j.fpc.2024.04.002","url":null,"abstract":"<div><p>The present study aims to elucidate the decomposition mechanism and gas evolution characteristics of a promising energy-rich carbamated microcrystalline cellulose nitrate (M3CN). The molecular structure and morphological characteristics of starting microcrystalline cellulose carbamate (MCCC) and its nitrated derivative were examined using FTIR and SEM techniques. Thermal analysis using TGA and DSC revealed distinct decomposition behaviors for MCCC and M3CN. MCCC exhibited endothermic decomposition linked to the degradation of the cellulosic structure. In contrast, an exothermic decomposition event was observed for M3CN, attributed to the cleavage of energetic groups within the nitrated cellulosic chains. Furthermore, the hyphenated TG-FTIR analysis confirmed that the primary gaseous products emitted during the pyrolysis of M3CN included NO, N<sub>2</sub>O, NO<sub>2</sub>, CO<sub>2</sub>, H<sub>2</sub>O, CH<sub>4</sub>, HCHO, HCN, and CHNO. The findings of this study enhance our understanding of the pyrolysis mechanism in cellulose-based energetic materials, providing a significant reference for forthcoming research and explorations in this field.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 327-332"},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667134424000178/pdfft?md5=184ca38221a6a5032f0d1e38935ee65c&pid=1-s2.0-S2667134424000178-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140765160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid propellant burn rate characterization: Effect of copper chromite blend with oxidiser and its storage 固体推进剂燃烧速率表征：铬酸铜与氧化剂混合物及其储存的影响

FirePhysChem Pub Date : 2024-04-02 DOI: 10.1016/j.fpc.2024.03.005

Sathiskumar PS , Alok Kumar Patel , Vinay Paliwal , Sojan P

{"title":"Solid propellant burn rate characterization: Effect of copper chromite blend with oxidiser and its storage","authors":"Sathiskumar PS , Alok Kumar Patel , Vinay Paliwal , Sojan P","doi":"10.1016/j.fpc.2024.03.005","DOIUrl":"10.1016/j.fpc.2024.03.005","url":null,"abstract":"<div><p>This work details the study conducted on composite solid propellants with activated copper chromite (ACR) as burn catalyst for its burn rate change with time due to the interaction of ammonium perchlorate (AP) with ACR. One of the hypotheses cited for burn rate reduction is the conversion of chromite in ACR to chromate by an electrolytic reaction with moisture in the presence of ammonium perchlorate. This hypothesis was studied by a design of experiments which includes blending ammonium perchlorate and ACR, Aluminum and ACR, stand alone ACR in raw material stage and the blends storage with time. The effect of moisture in AP is addressed by comparing undried and dried AP in the blends. The blended raw materials were characterized by Thermo-gravimetric analysis, Particle Size Distribution, surface area measurement, Scanning Electron Microscopy and chromium estimation. Results show that the conversion of chromium from chromite to chromate is very minimum in the presence of AP. Propellant samples are prepared with these blends at different time intervals to understand viscosity, mechanical properties and burn rate behavior with raw material storage. Experimental results show burn rate shows an opposite trend of increase with blend storage of 6 months. A plausible explanation for this observation is presented in the paper correlating the experimental conditions.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 295-300"},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667134424000130/pdfft?md5=77fc82eb8070a56ec628a8dcddb6f916&pid=1-s2.0-S2667134424000130-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140764520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of HNS-based sticks through 3D printing and its combustion performance 通过三维打印制备 HNS 基棒及其燃烧性能

FirePhysChem Pub Date : 2024-03-29 DOI: 10.1016/j.fpc.2024.03.007

Hongyang Chen , Yaofeng Mao , Jie Chen , Ruolei Zhong , Bo Jin , Fude Nie , Rufang Peng , Jun Wang

{"title":"Preparation of HNS-based sticks through 3D printing and its combustion performance","authors":"Hongyang Chen , Yaofeng Mao , Jie Chen , Ruolei Zhong , Bo Jin , Fude Nie , Rufang Peng , Jun Wang","doi":"10.1016/j.fpc.2024.03.007","DOIUrl":"10.1016/j.fpc.2024.03.007","url":null,"abstract":"<div><p>Microscale energetic materials have garnered considerable attention because they can be integrated in microelectromechanical systems for several potential applications. Hexanitrostilbene (HNS) has been widely utilized in ignition and initiation devices owing to its excellent thermal and shock stability and high sensitivity to short pulse shock waves. To meet the energy release requirements of micro-detonation devices, HNS sticks were prepared using direct ink writing and their reaction and flame propagation properties were studied. HNS particles sized 17.5 µm to 5 µm and ∼500 nm was prepared. Then, the viscosity of HNS-based inks prepared via acoustic resonance technology decreased when the particle size decreased or when the HNS content reduced from 97 wt.%, 95 wt.%, and 92 wt.%, to 90 wt.%. Additionally, the HNS-based inks with different binders exhibited different viscosity. The effect of the inner diameter of needle (0.4 mm, 0.6 mm, and 0.9 mm), printing rate (13 mm/s, 15 mm/s, 17 mm/s, 19 mm/s), and pressure (0.05 MPa, 0.1 MPa, 0.15 MPa, 0.2 MPa) on the width of HNS sticks was also elucidated. HNS-based sticks with a diameter of 0.9 mm underwent self-sustaining combustion reactions, and the burning rate increased from 5.1 mm/s to 6.8 mm/s as the particle size decreased from 17.5 µm to 500 nm. Overall, this work provides an effective approach to prepare microscale HNS for integration into micro-energetic devices.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 308-316"},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667134424000154/pdfft?md5=c2626d2c5d99b83af7c6261c5c9143f1&pid=1-s2.0-S2667134424000154-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140404214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-nitrogen azotetrazole based pyrogen gas generating propellants: Aspects on synthesis, characterization, combustion characteristics and kinetics 基于高氮偶氮四唑的热氮气生成推进剂：合成、表征、燃烧特性和动力学方面的问题

FirePhysChem Pub Date : 2024-03-28 DOI: 10.1016/j.fpc.2024.03.006

Santhosh G , J. Anju , Supriya N , Sreejith M , Suraj S

{"title":"High-nitrogen azotetrazole based pyrogen gas generating propellants: Aspects on synthesis, characterization, combustion characteristics and kinetics","authors":"Santhosh G , J. Anju , Supriya N , Sreejith M , Suraj S","doi":"10.1016/j.fpc.2024.03.006","DOIUrl":"10.1016/j.fpc.2024.03.006","url":null,"abstract":"<div><p>Propellant formulations containing a novel high nitrogen azotetrazole salt viz., diammonium 5,5′-azotetrazolate (DAAzT) along with two different binders viz., hydroxyl terminated polybutadiene (HTPB) and glycidyl azide polymer (GAP) were realized as potential pyrogen-based gas generators for use in inflatable structures. The DAAzT-GAP and DAAzT-HTPB propellant systems were investigated for their gas generating capabilities and it was found that the GAP based system offers enhanced gas yield of ∼430 mL/g against ∼320 mL/g for the HTPB based propellant at standard operating pressure of 1 bar and temperature of 298 K. Combustion product analyses of the propellant were undertaken by pyro GC–MS and it was found that the combustion products are benign and constitutes 62% and 53% N<sub>2</sub> (mass fraction) as major combustion products from GAP and HTPB propellant respectively. A detailed thermal analysis of DAAzT by isoconversional method of Vzayovkin was undertaken and the dependence of activation energy with conversion was evaluated. The activation energy was also determined using a classical Kissinger method. The impact and friction sensitivity of the promising GAP-DAAzT propellant was found to be 3 Nm and 360 N respectively and the auto ignition temperature is 177.0 °C. Functional evaluation and gas generating capability of DAAzT-GAP propellant were successfully demonstrated in a sub-scale inflation test in a stand-alone configuration.</p></div>","PeriodicalId":100531,"journal":{"name":"FirePhysChem","volume":"4 4","pages":"Pages 301-307"},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667134424000142/pdfft?md5=b0748d2d8be9e03314492028b3d082eb&pid=1-s2.0-S2667134424000142-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0