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Denisyuk, A. P.; Shepelev, Yu. G.; Rusin, D.L.; Shumskii, I.V.

doi:10.1023/a:1017561827203

Cited by 14 publications

(4 citation statements)

References 3 publications

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“…Second, the properties of the SL change the nature of the heat input from their gas phase to the condensed one. In addition, the presence of SL (CS) is an indispensable condition for the effectiveness of catalysts, which increase the burning rate and reduce its dependence on pressure [9][10][11][12]. Therefore, it can be assumed that the presence of SL is a factor leading to a decrease in the dependence of the burning rate on pressure, i.e.…”

Section: Thermal State Of the Above-surface Zonementioning

confidence: 99%

The role of intermediate structures in the combustion of high-energy condensed systems

Babuk

Budnyi

Nizyaev

et al. 2022

J. Phys.: Conf. Ser.

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During the combustion of high-energy condensed systems, the formation of an intermediate structure - a skeleton layer, is possible, which has a significant effect on the combustion process. An experimental study was carried out to determine the nature of the effect of the curing of the binder on forming this structure. The article shows the specific role of the used hardener, polyethylene polyamine, presents the solutions for simulating the phenomena in the surface layer in the presence and absence of a skeleton layer, as well as shows the possibility of predicting the characteristics of the combustion process.

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Section: Thermal State Of the Above-surface Zonementioning

confidence: 99%

The role of intermediate structures in the combustion of high-energy condensed systems

Babuk

Budnyi

Nizyaev

et al. 2022

J. Phys.: Conf. Ser.

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“…This group includes NG-based double-base propellants, which contain additional cooling plasticizers (dinitrotoluene, dibutyl phthalate, triacetin, etc. ), including propellants containing RDX and HMX [31], compositions based on diethyleneglycol dinitrate (DEGDN) without additional plasticizers and with them [32], linear nitro compounds and nitramines [17,33], low-energy compositions [32,34], and also individual liquid [32] and solid explosives [35]. For this group of propellants and explosives, the effect of catalysts increases significantly if they are introduced together with CB, and especially with CNT.…”

Section: Full Papermentioning

confidence: 99%

Energetic Materials Combustion Catalysis: Necessary Conditions for Implementation

Denisyuk

Aung

Shepelev

2020

Propellants Explo Pyrotec

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The features of the catalysis of combustion of aromatic nitro compounds (trinitrates of toluene, resorcinol, phenol, etc.) have been studied. It has been shown that catalysts have a significant effect on the combustion of aromatic nitro compounds, and, as in the case of double-base propellants, their efficiency increases with the addition of carbon materials, especially carbon nanotubes (CNTs). For example, the addition of 3% nickel salicylate in combination with 1% CNTs to trinitroresorcinol leads to an increase in its burning rate by 4.3 times. It has been shown that, as in the case of double-base propellants, a necessary condition for the catalysis of nitro compounds is the formation of a carbon frame (deposit char layer) on the burning surface, on which catalyst particles accumulate and accelerate exothermic reactions. This fact, combined with the high thermal conductivity of the carbon frame, leads to an increase in the heat flux into the condensed phase and an increase in the burning rate. As pressure increases, the formation of the frame becomes more difficult, and the effect of catalysts decreases, as a result of which the value of pressure exponent reduces. The proposed mechanism of combustion catalysis is applicable to almost any individual explosives and propellant compositions based on various plasticizers (nitroesters, linear liquid nitro compounds and nitramines, etc.), as well as containing powerful explosives (RDX, HMX, CL-20, etc.), the combustion of which proceeds due to the heat of redox reactions.

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“…Denisyuk et al added high explosives (RDX or HMX) into double-base propellants to improve their energy characteristics. Results show that the addition of RDX or HMX decreases the burning rate of double-base propellants, but it does not decrease the catalytic efficiency [8]. In order to evaluate the actual pros and cons in the use of new nitroamines for solid rocket applications, Yan et al [2,9] has studied the combustion properties and mechanisms of CMDB including RDX, TNAD, HMX, and DNP by means of high-speed photography technique, thermogravimetry (TG), and differential scanning calorimetry (DSC).…”

Section: Introductionmentioning

confidence: 96%

“…Many researchers have focused on the studies of the explosive safety and combustion for CMDB propellants [2,[8][9][10][11]. Denisyuk et al added high explosives (RDX or HMX) into double-base propellants to improve their energy characteristics.…”

Section: Introductionmentioning

confidence: 99%

The Auto‐Ignition Behaviors and Thermal Safety of the Composite Modified Double Base Propellants under Rapid Heating

Yang

Liao

Mai

et al. 2021

Propellants Explo Pyrotec

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The safety issue of energetic materials (EMs) such as propellants or explosives has been a high concern. When EMs are subjected to rapid thermal stimulus, they will ignite or explode, which may cause personal injury and property loss. Studies on auto-ignition behaviors and thermal safety of EMs under rapid thermal stimulation provide important guidelines for EMs in their production, transportation, storage, and application. In this work, auto-ignition experiments of the composite modified double base (CMDB) propellants, which include 1,1-diamino-2,2-dinitroethylene (FOX-7) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) mixtures under high initial temperature condition, have been conducted by using a rapid compression machine (RCM). The temperature rise rate can reach up to 2 × 10 4 K/s. Pressure evolution recording and high speed-visualization were synchronized to reveal the auto-ignition behaviors of CMDB samples. Results show that the end of compression (EOC) temperature and pressure have a significant impact on the ignition delay time (IDT). The IDT increases with a decrease in temperature and pressure. In addition, through tuning the EOC temperature and pressure, the critical condition that separates the ignition region and non-ignition region is obtained. The critical ignition temperature of CMDB decreases with an increase in pressure. When the pressure is higher than 2.0 MPa, the critical temperature is about 650 K.

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Untitled

Cited by 14 publications

References 3 publications

The role of intermediate structures in the combustion of high-energy condensed systems

The role of intermediate structures in the combustion of high-energy condensed systems

Energetic Materials Combustion Catalysis: Necessary Conditions for Implementation

The Auto‐Ignition Behaviors and Thermal Safety of the Composite Modified Double Base Propellants under Rapid Heating

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