Central European Journal of Energetic Materials最新文献_第8页

Preparation and Performance of CL-20-based Ultraviolet-curable High-explosive Ink and Its Application in Rigid Explosive Networks by Direct Ink Writing CL-20基紫外线固化高爆油墨的制备、性能及其在直接油墨书写刚性炸药网络中的应用

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134942

Ruigao Li, Wei-bing Li, Xiaode Guo, Li Liang, Yajun Wang, Wei-bing Li

{"title":"Preparation and Performance of CL-20-based Ultraviolet-curable High-explosive Ink and Its Application in Rigid Explosive Networks by Direct Ink Writing","authors":"Ruigao Li, Wei-bing Li, Xiaode Guo, Li Liang, Yajun Wang, Wei-bing Li","doi":"10.22211/CEJEM/134942","DOIUrl":"https://doi.org/10.22211/CEJEM/134942","url":null,"abstract":"To improve the groove charge consistency and density and to reduce the initiation synchronicity error of a rigid multi-point initiation explosive network, a CL-20-based ultraviolet (UV)-curable high-explosive ink, comprising 42 wt.% sub-micron CL-20, a 55.4 wt.% binder system (including 2.0 wt.% NC and 53.4 wt.% butyl acetate), and 2.6 wt.% UV-curable resin, based on direct ink writing (DIW) technology, was prepared. The properties of the composite sample deposited via DIW were characterized. The results indicated that the sample had good uniformity, with few defects, and a critical detonation size of around 1.5×0.283 mm. A six-point initiation explosive network was designed for the integration of DIW technology and precise press-loading of the charge. The network featured six pre-pressed booster pellets with the same charge density (ρ0 = 1.89 g·cm−3, 95.8% of theoretical maximum density) as the output end charges, and a groove channel charged by DIW and press-loading. This procedure increased the density of the booster charge in the groove channels to 1.890 g·cm−3, effectively improved the consistency of the charge density between the groove Central European Journal of Energetic Materials ISSN 1733-7178; e-ISSN 2353-1843 Copyright © 2021 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland 87 Preparation and Performance of CL-20-based Ultraviolet-curable High-explosive... Copyright © 2021 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland channels and the output ends and lowered the initiation synchronicity error of the network to 62 ns. The network can initiate a jetting projectile charge (JPC) with good shape and small lateral offset, implying that the network initiation capability and synchronization meet the operational requirements of JPC","PeriodicalId":9679,"journal":{"name":"Central European Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48875979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Review of Nano-thermites; a Pathway to Enhanced Energetic Materials 纳米铝热剂综述；增强含能材料的途径

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134953

M. Zaky, A. Elbeih, T. Elshenawy

{"title":"Review of Nano-thermites; a Pathway to Enhanced Energetic Materials","authors":"M. Zaky, A. Elbeih, T. Elshenawy","doi":"10.22211/CEJEM/134953","DOIUrl":"https://doi.org/10.22211/CEJEM/134953","url":null,"abstract":"Nano-thermites or metastable intermolecular composites (MICs) have been implemented into modern research on energetic materials as they offer much higher energy densities, higher rates of energy release, stability, and safety (lower sensitivity). This paper reviews several synthetic methods for MICs that have been well thought-out for energetic applications, advantages and disadvantages, as well as the characteristics of each manufacturing technique. The techniques presented include powder mixing, sol-gel, synthesis of MICs based on nano-porous silicon (Psi), sputtering, multilayer nano-foils and electrolytically plated carbon nano-materials for nano-thermite applications. These techniques offer enormously different characteristics and, through the variation of various chemical techniques and conditions, a wide range of chemical and energetic properties may be attained. This may give the opportunity for the safe use of MICs as replacements for some conventional energetic materials in various applications, and may also enable us to study the effects when incorporating these MICs into energetic matrixes, as a promising and feasible research field.","PeriodicalId":9679,"journal":{"name":"Central European Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48670822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Assessment of the Shelf Life of Composite Solid Propellants in Air and Nitrogen Atmospheres through Thermal Ageing 复合固体推进剂在空气和氮气环境中热老化的保质期评估

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134663

M. Keshavarz, Seyyed Mohammad Hossein Hosseini, M. Karimi

引用次数: 1

Performance of Mn/Bi2O3 Pyrotechnic Time Delay Compositions Mn/Bi2O3烟火延期药的性能研究

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134798

S. Tichapondwa, Shasha Guo, W. Roux

{"title":"Performance of Mn/Bi2O3 Pyrotechnic Time Delay Compositions","authors":"S. Tichapondwa, Shasha Guo, W. Roux","doi":"10.22211/CEJEM/134798","DOIUrl":"https://doi.org/10.22211/CEJEM/134798","url":null,"abstract":"Chemical time delay detonators are used widely in mine blasting applications. In order to achieve effective blasting, detonations must follow a precisely controlled timing sequence in a specified firing pattern. Silicon fuelbased pyrotechnic compositions are widely used in mining detonators and are well studied. However, some of these formulations are deemed to be problematic, as they contain heavy metals which are bio-accumulative and toxic to the environment. Therefore, there is need to explore alternative formulations which are suitable for these applications. Manganese-fueled systems are attractive due to their metallic properties and several oxidation states of the manganese fuel. This study focused on characterizing the burn properties of Mn/Bi2O3 compositions for slow to intermediate time delay applications. The compositions supported combustion in the 25 to 55 wt.% Mn range in an inert helium atmosphere. Burn rates between 2.5 and 11.2 mm·s–1 were recorded in open burn tests, whilst closed burn tests in glass tubes resulted in burn rates of 6.3 to 11.2 mm·s–1. Both X-ray diffraction analysis of the reaction products and thermodynamic simulations confirmed that MnO and Bi are the main reaction products, with unreacted Mn and Bi2O3 also being detected. This suggests that the dominant reaction for this composition is a simple thermite-type reaction.","PeriodicalId":9679,"journal":{"name":"Central European Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41800891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Studies on the Properties of a Putty-like Explosive with a Silicone Binder 有机硅粘结剂类腻子炸药的性能研究

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/135053

Karol Zalewski, Z. Chyłek, W. Trzciński

引用次数: 1

Novel Composite Solid Propellant with High Resistance to Thermo-oxidative Degradation Reactions, Extended Shelf Life, and Superior Combustion Characteristics 新型复合固体推进剂具有高抗热氧化降解反应，延长保质期和优越的燃烧特性

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/135119

Sherif Elbasuney, Eslam Elsaka, A. Elbeih, H. Mostafa

{"title":"Novel Composite Solid Propellant with High Resistance to Thermo-oxidative Degradation Reactions, Extended Shelf Life, and Superior Combustion Characteristics","authors":"Sherif Elbasuney, Eslam Elsaka, A. Elbeih, H. Mostafa","doi":"10.22211/CEJEM/135119","DOIUrl":"https://doi.org/10.22211/CEJEM/135119","url":null,"abstract":"Hydroxy-terminated polybutadiene (HTPB) pre-polymer is the main constituent that is responsible for conferring high mechanical properties on composite solid propellants. However, HTPB pre-polymer suffers from oxidative degradation reactions that diminish its mechanical properties and shelf life. Composite solid propellant formulations based on an advanced stabilizing agent (anti-oxidant), Flexzone 6-H, with different curing ratios, 0.7 and 1.1, were developed via mixing and casting under vacuum. The developed formulations were subjected to artificial ageing using Vant Hoff,s formula by isothermal heating at 80 °C for up to 35 days. The change in strain with ageing was evaluated using a uni-axial tensile test. The propellant formulation based on a curing ratio of 0.7 demonstrated a high ageing resistance coefficient and an extended service life of up to 15 years, compared with 5 years for higher curing ratio. A propellant grain is considered to be ‘aged out’ at 30% reduction in its maximum strain value. The propellant formulation based on the 0.7 curing ratio exhibited superior thermal stability as it offered a minimum decrease in heat released after ageing using DSC. Additionally, the 0.7 curing ratio formulations exhibited a minimum change in burning rate and pressure exponent with ageing time. It can be concluded that the propellant with 0.7 curing ratio can maintain its mechanical, thermal, and ballistic properties with ageing. Central European Journal of Energetic Materials ISSN 1733-7178; e-ISSN 2353-1843 Copyright © 2021 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland 144 S. Elbasuney, E. Elsaka, A. Elbeih, H.E. Mostafa Copyright © 2021 Łukasiewicz Research Network – Institute of Industrial Organic Chemistry, Poland","PeriodicalId":9679,"journal":{"name":"Central European Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41372416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Simulations on Physicochemical Performance of Novel High-energy BHDBT-based Propellants 新型高能BHDBT基推进剂物理化学性能的理论模拟

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134652

Ke Wang, Hai-tao Huang, Huixiang Xu, Huan Li, Jun-qiang Li, X. Fan, W. Pang

{"title":"Theoretical Simulations on Physicochemical Performance of Novel High-energy BHDBT-based Propellants","authors":"Ke Wang, Hai-tao Huang, Huixiang Xu, Huan Li, Jun-qiang Li, X. Fan, W. Pang","doi":"10.22211/CEJEM/134652","DOIUrl":"https://doi.org/10.22211/CEJEM/134652","url":null,"abstract":"Based on Energy Calculation Star program and molecular dynamic method, three designed 2,3-bis(hydroxymethyl)-2,3-dinitro-1,4-butanediol tetranitrate-based (BHDBT) propellants are firstly reported and their physicochemical performance are investigated. Results suggest that compared with HMX-based and CL-20-based propellants, the specific impulses of all BHDBT-based propellants surpass or approximate 280 s, which indicates the latter have the potential to be high-energy propellants. The diffusion coefficient of plasticizers in BHDBT-based propellant decrease as the temperature reduces, and reduce in the order: Bu-NENA > TMETN > BTTN. The densities of all BHDBT-based propellants surpass or approximate 1.7 g/cm3. The comparison of elastic constants, Poisson’s ratios and K/G values indicates that the mechanical properties of three BHDBT-based propellants increase in the order (by plasticizer): Bu-NENA < TMETN < BTTN. The bond length analysis of C–NO2 and O–NO2 bond in BHDBT suggests that the former is the trigger bond in the BHDBT-based propellants, and the safety of BHDBT-based propellants and BHDBT crystal decreases in the order: GAP/BTTN/Al/BHDBT > GAP/Bu-NENA/Al/BHDBT ≈ GAP/TMETN/Al/BHDBT > BHDBT. In conclusion, GAP/BTTN/Al/BHDBT propellant has the potential to be a novel high-energy propellant.","PeriodicalId":9679,"journal":{"name":"Central European Journal of Energetic Materials","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45604702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shear Flow of Guncotton Pulp 贡棉浆剪切流动

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2021-03-30 DOI: 10.22211/CEJEM/134904

V. Banishevsky, R. Zakusylo, D. Zakusylo

引用次数: 0

The Shooting Tests of Target Perforating Ability, Performed on Cast Concrete Cylinders 现浇混凝土筒靶射孔能力射击试验

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2020-12-31 DOI: 10.22211/cejem/132066

Ł. Habera, Kamil Hebda, P. Koślik, T. Sałaciński

引用次数: 1

Composite Propellant Formulation of Poly (16-, 32- and 64-) Azido Dendritic Esters as Energetic Plasticizer and Evaluation of Properties 聚(16-、32-和64-)叠氮树突状酯作为高能增塑剂的复合推进剂配方及性能评价

IF 0.8 4区工程技术

Central European Journal of Energetic Materials Pub Date : 2020-12-28 DOI: 10.22211/cejem/131235

K. D. B. Yamajala, Hema Singh, Ramesh Kurva, M. Maurya, Shaibal Banerjee

引用次数: 0