scholarly journals Characteristics of a New Plastic Explosive Named EPX-1

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Ahmed Elbeih
Keyword(s):  
Detonation Velocity ◽  
Dibutyl Phthalate ◽  
Production Method ◽  
Pentaerythritol Tetranitrate ◽  
Vacuum Stability ◽  
Plastic Explosive ◽  
Plastic Explosives ◽  
Vacuum Stability Test ◽  
Research Stage ◽  
Detonation Characteristics

EPX-1 is a new plastic explosive (in the research stage) which has been prepared for military and civilian applications. EPX-1 explosive contains pentaerythritol tetranitrate (PETN) with different particle size as explosive filler bonded by nonenergetic thermoplastic binder plasticized by dibutyl phthalate (DBP). In this paper, the production method of EPX-1 was described. The crystal morphology was studied by scanning electron microscope (SEM). Heat of combustion was determined experimentally. The compatibility of PETN with the polymeric matrix was studied by vacuum stability test. Sensitivities to impact and friction were measured. The detonation velocity was measured experimentally and the detonation characteristics were calculated by EXPLO5 thermodynamic code. For comparison, Semtex 1A, Semtex 10, Formex P1, and Sprängdeg m/46 were studied. It was concluded that PEX-1 has compatible ingredients, it has the highest detonation velocity of all the studied plastic explosives, and its sensitivity is in the same level of the studied plastic explosives except Semtex 1A.

Application of cis-1,3,4,6-Tetranitrooctahydroimidazo-[4,5d] Imidazole (BCHMX) in EPX-1 Explosive

2016 ◽  
Vol 66 (5) ◽  
pp. 499 ◽  
Author(s):  
Ahmed Elbeih ◽  
Tamer Elshenawy ◽  
Mohamed Gobara
Keyword(s):  
Friction Force ◽  
Impact Energy ◽  
Dibutyl Phthalate ◽  
Decomposition Temperature ◽  
Experimental Measurements ◽  
Particle Sizes ◽  
Mutual Relationship ◽  
Velocity Of Detonation ◽  
Plastic Explosives ◽  
Detonation Characteristics

cis-1,3,4,6-Tetranitrooctahydroimidazo-[4,5 d]imidazole (BCHMX) has been studied as explosive filler to replace pentaerythritol tetra-nitrate (PETN) inEPX1 explosive. BCHMX with different particle sizes was bonded by thermoplastic binder plasticised by dibutyl phthalate to obtain BCHMX-EPX. Heat of combustion was measured. Impact energy and friction force of initiation were determined. Velocity of detonation was measured, while the detonation characteristics were calculated by thermodynamic code named EXPLO 5. For comparison, the detonation characteristics of some commercial plastic explosives such asEPX-1, SEMTEX 10 and FORMEX P1were also studied. It was concluded that BCHMX-EPX has the highest detonation characteristics of all the studied plastic explosives and its sensitivity is in the same level of the studied traditional plastic explosives. BCHMX-EPX has the highest decomposition temperature of all the studied samples. The mutual relationship obtained from the experimental and calculated results indicates the compatibility of the calculated results with the experimental measurements.

On Elastic-Plastic Explosives for Explosive Hardening

2013 ◽  
Vol 834-836 ◽  
pp. 165-168
Author(s):  
Xiao Yan Hu ◽  
Zhao Wu Shen ◽  
Ying Bin Liu ◽  
Tian Sheng liu
Keyword(s):  
Detonation Velocity ◽  
Production Cost ◽  
Impact Sensitivity ◽  
Detonation Performance ◽  
Hadfield Steel ◽  
Elastic Plastic ◽  
Plastic Explosive ◽  
Plastic Explosives ◽  
The Impact

In order to improve the effect of explosive hardening and reduce the production cost, the elastic-plastic explosive which consists of RDX, rubber, deterrent, antioxidant and plasticizer was prepared. The experiments including density testing, detonation performance, detonation velocity testing, impact sensitivity, and explosive hardening were carried out. The results show that the density of the elastic-plastic explosive is 1.46g/cm3, the detonation velocity is 6670m/s, the impact sensitivity is 28% and the elastic-plastic explosive can be detonated reliably by a detonator. The explosion hardening on Hadfield steel makes the hardness increased from 187HB to 362HB, which increases by 93.5%.

scholarly journals Thermal decomposition and shelf-life of PETN and PBX based on PETN using thermal methods

2018 ◽  
Vol 56 (3) ◽  
pp. 303 ◽  
Author(s):  
Nguyen Trung Toan ◽  
Phan Duc Nhan ◽  
Vo Hoang Phuong
Keyword(s):  
Shelf Life ◽  
Pentaerythritol Tetranitrate ◽  
Thermal Methods ◽  
Vacuum Stability ◽  
Exothermic Reactions ◽  
Decomposition Reactions ◽  
Polymer Bonded Explosives ◽  
Exponential Factors ◽  
Vacuum Stability Test ◽  
Kinetics Of

The kinetics of exothermic reactions are important in assessing the potential of materials and systems for thermal explosion. In this paper, the thermal behavior and decomposition kinetics of pentaerythritol tetranitrate (PETN) and polymer-bonded explosives (PBXs) based on PETN were investigated using Thermogravimetric analysis (TGA) and Vacuum Stability Test (VST) methods. The Arrhenius activation energies and pre-exponential factors were determined by the Ozawa and Kissinger methods. Based on the overall kinetic parameters of decomposition reactions, the shelf-life of PETN and PBXs based on PETN could be calculated and predicted.

Study of Plastic Explosives based on Attractive Cyclic Nitramines Part I. Detonation Characteristics of Explosives with PIB Binder

2011 ◽  
Vol 36 (5) ◽  
pp. 433-438 ◽  
Author(s):  
Ahmed Elbeih ◽  
Jiři Pachman ◽  
Waldemar A. Trzciński ◽  
Svatopluk Zeman ◽  
Zbyněk Akštein ◽  
...  
Keyword(s):  
Cyclic Nitramines ◽  
Plastic Explosives ◽  
Detonation Characteristics

Study of Plastic Explosives based on Attractive Cyclic Nitramines, Part II. Detonation Characteristics of Explosives with Polyfluorinated Binders

2013 ◽  
Vol 38 (2) ◽  
pp. 238-243 ◽  
Author(s):  
Ahmed Elbeih ◽  
Jiri Pachman ◽  
Svatopluk Zeman ◽  
Waldemar A. Trzcinski ◽  
Muhamed Suceska
Keyword(s):  
Cyclic Nitramines ◽  
Plastic Explosives ◽  
Detonation Characteristics

Dynamic vacuum stability test method and investigation on vacuum thermal decomposition of HMX and CL-20

2012 ◽  
Vol 537 ◽  
pp. 13-19 ◽  
Author(s):  
Rui Liu ◽  
Zunning Zhou ◽  
Yanli Yin ◽  
Li Yang ◽  
Tonglai Zhang
Keyword(s):  
Thermal Decomposition ◽  
Test Method ◽  
Stability Test ◽  
Vacuum Stability ◽  
Dynamic Vacuum ◽  
Vacuum Stability Test

scholarly journals Preparation and Characterization of a New High-Performance Plastic Explosive in Comparison with Traditional Types

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Ahmed Elbeih ◽  
Tamer Elshenawy ◽  
Hany Amin ◽  
Ahmed K. Hussein ◽  
Sara M. Hammad
Keyword(s):  
Internal Energy ◽  
High Performance ◽  
Detonation Properties ◽  
Energy Of Combustion ◽  
Plastic Explosive ◽  
Velocity Of Detonation ◽  
Proportional Relationship ◽  
Plastic Explosives ◽  
Styrene Butadiene

EPX-2R is a high-performance plastic explosive produced for different applications. EPX-2R is based on RDX (1,3,5-trinitro-1,3,5-triazinane) bonded by the elastic matrix of the softened styrene butadiene binder. A computerizing mixer plastograph was used for the production of EPX-2R. The internal energy of combustion was measured and used to determine the enthalpy of formation. Friction and impact sensitivities were measured. The velocity of detonation was determined experimentally, and the detonation properties were calculated by the EXPLO 5 code. For comparison, traditional plastic explosives, composition C-4, Semtex 10, Formex P1, EPX-1, and Sprängdeg m/46, were studied. It was concluded that the velocity of detonation of EPX-2R was higher than the studied samples except composition C-4, while its sensitivity is the lowest. Interesting inversely proportional relationship between the measured internal energy of combustion and the calculated heat of detonation was observed.

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