Burning Characteristics of Microcellular Combustible Objects Fabricated by a Confined Foaming Process

Yang, Weitao; Li, Yuxiang; Ying, Sanjiu

doi:10.1002/prep.201400017

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…It has the advantages of high strength and fast burning rate, but the energy of this kind of combustible material is relatively low (about 650 J/g) [8] . Microporous combustible material is a kind of energetic material composed of energetic solid and binder prepared by chemical foaming [9][10][11] or physical foaming method [12][13][14][15] . It has the advantages of high energy and good heat resistance.…”

Section: Introductionmentioning

confidence: 99%

Study on the curing process and thermal performance of an RDX-based UV-cured combustible ordnance material

et al. 2023

J. Phys.: Conf. Ser.

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RDX-based combustible ordnance material was prepared using a 3D printer, and the curing process of the UV-curing resin (acrylic resin) was tracked by infrared spectroscopy. The thermal decomposition characteristics of photocurable combustible materials were studied by DSC, and the non-isothermal method was used to study Kinetic parameters. Meanwhile, the delayed ignition time of UV-cured combustible materials at different temperatures were tested using a muffle furnace. Infrared spectroscopy test results show that the C=C bond conversion rate can reach to 81.7% when the acrylate resin is irradiated for 2 s. DSC test results show that the thermal decomposition peak temperature of the UV-curing combustible ordnance material is 235.9°C (at heating rate of 10°C/min), and the activation energy of the reaction is 129.93 kJ/mol. The critical explosion temperature and spontaneous temperature were 466.85K and 469.31K, respectively.

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Section: Introductionmentioning

confidence: 99%

Study on the curing process and thermal performance of an RDX-based UV-cured combustible ordnance material

et al. 2023

J. Phys.: Conf. Ser.

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“…According to this law, the gun propellant (as a solid material) burns in parallel layers on the outer surface. Analyses of the properties of combustible cartridge materials fabricated by various methods, such as by foaming, felt-moulding, winding, or impregnation of resin in the felted combustible components, show its porous internal structure [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…These effects significantly increase the burning rate of porous materials. The results of investigations of the combustion of porous materials show that the burning process is different from that of traditional propellants, and the burning rate of porous propellants is much higher [12][13][14][15][16][17][18][19][20]. As previous methods for determining the burning rate have not taken into account the internal porous structure of the combustible case material, they failed and have led to significant errors in the ballistic calculations.…”

Section: Introductionmentioning

confidence: 99%

Specificity of Burning of Porous Combustible Material Used as Cartridge Case

2022

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The combustible cartridge case has become an integral part of many modern weapons systems. The energetic and burning characteristics of the combustible case can have a significant impact on shot parameters. This paper describes Closed Vessel Tests (CVTs) performed on combustible cartridge case material and presents a method of determining the physical burning law and the linear burning rate of the tested material. The method was verified on the basis of the results of CVT of the felted combustible cartridge case material of a 120 mm tank round. It is shown that, in the case of porous combustible materials, the standard methods of determining the burning rate fail. The porosity of combustible materials greatly increases the burning surface and heat feedback from the burning zone to the unburned structure. These effects significantly increase the burning rate of porous materials. The results of analysis show the strong dependence of the burning rate on pressure. The results of this study can be applied in the modeling of gun propellant systems that contain combustible case elements.

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Burning Characteristics of Microcellular Combustible Ordnance Materials

Yang¹,

Ying

2015

Propellants Explo Pyrotec

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A microcellular combustible ordnance material composed of 70 % RDX (cyclotrimethylene trinitramine) and 30 % PMMA (poly methyl methacrylate) was fabricated using the solvent method and foamed by supercritical CO2 as foaming agent. This material has a number of advantages and many find potential application in weaponry. In this paper, vented bomb tests were conducted on the porous materials to gain a qualitative understanding of how the material is burning in a gun environment. The extinguish process showed that the microcellular combustible material followed the in‐depth combustion mode, i.e. the combustion products infiltrated through inner pores as well as ignited the inner pore surface. With increasing burning degree, the depth and perforation size of infiltration zone increased. Closed bomb tests were also conducted to investigate the influences of test conditions on the burning behaviors. The results showed that when the ignition pressure was increased from 10.98 MPa to 15.0 MPa, the burning time was shortened, but the mass burning rate and vivacity did not change obviously. Mass burn rates at different loading densities indicated that while the pressure in closed vessel is high enough (p≥40 MPa), hot combustion gases were driven into the inner pores and convectively ignited the inner pores. The closed bomb results conducted at high and low temperature showed no abnormal burning behavior at low and high temperature can be observed.

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Burning Characteristics of Microcellular Combustible Objects Fabricated by a Confined Foaming Process

Cited by 10 publications

References 14 publications

Study on the curing process and thermal performance of an RDX-based UV-cured combustible ordnance material

Study on the curing process and thermal performance of an RDX-based UV-cured combustible ordnance material

Specificity of Burning of Porous Combustible Material Used as Cartridge Case

Burning Characteristics of Microcellular Combustible Ordnance Materials

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