Luzhou North Chemical Industries Co.

Luzhou, China

Luzhou North Chemical Industries Co.

Luzhou, China
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Zhou X.,Nanjing University of Science and Technology | Wang Y.,Luzhou North Chemical Industries Co. | Cheng Z.,Huaiyin Normal University | Ke X.,Nanjing University of Science and Technology | Jiang W.,Nanjing University of Science and Technology
Chemical Engineering Journal | Year: 2017

Nanostructured energetic composites, in which the oxidizing component and the reducing component are uniformly distributed and intimately contacted, are attracting much attention in recent years. In this study, a new method is developed to facilely prepare CuO nanotubes and accordingly the core-shell structured Al/CuO metastable intermolecular composite (MIC) thin film on a silicon substrate. Cr and Cu thin films are sputter-deposited onto the silicon substrate sequentially, where Cr thin film functions as the adhesion layer. The silicon substrate is then immersed in a mixture of NaOH and (NH4)2S2O8 to form one-dimensional Cu(OH)2 nanostructures, which are then dehydrated at 180 °C to form CuO nanotubes. Nano Al is then sputter-deposited around CuO to obtain core-shell Al/CuO MIC. The morphological, structural and compositional information of the core-shell Al/CuO MIC is characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The energy-release characteristics of core-shell Al/CuO MIC are studied by differential scanning calorimetry and differential thermal analysis, and the preliminary laser ignition test is conducted by using pulsed Nd:YAG laser. The results show that the prepared Al/CuO MIC possesses a fine core-shell structure and is highly exothermic. The preparation method developed is suitable for the facile synthesis of non-cracking core-shell Al/CuO MIC thin film that can be integrated with microelectromechanical systems to realize functional energetic chips. © 2017 Elsevier B.V.


Wang Z.-Q.,Southwest University of Science and Technology | Liu X.,Southwest University of Science and Technology | Dong C.-Y.,Luzhou North Chemical Industries Co. | Zhang H.-J.,Luzhou North Chemical Industries Co. | And 2 more authors.
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | Year: 2017

To solve the problem of large solvent wastage and non-uniform particle size in the preparation of spherical propellant grain, the spherical gun propellant with large diameter was prepared through the shear-rounder method using double-base absorbent gun powder as raw material. The effect of mass ratio of solvent to cotton, the space between two pill-rolling knifes, and the diameter of the sticks on the quality of spherical gun propellant was studied. The constant-volume combustion performance of formed and dried samples was measured by the closed bomb test. The results show that when the mass ratio of solvent to cotton is 0.4, the space between two pill-rolling knifes is 0.4mm and the diameter of the sticks is 3.8mm, the particle size of spherical particle obtained is uniform, and the elongation, true density, and bulk density of the spherical gun propellant after drying are 1.033, 1.680g/cm3 and 0.945g/cm3, respectively, similar to the density of the spherical gun propellant prepared by the internal dissolution method.The curves obtained from the closed bomb test show that the combustion process of spherical particle prepared is stable, revealing a characteristic of regressive burning. © 2017, Editorial Board of Journal of Explosives & Propellants. All right reserved.


Yang Q.,Southwest University of Science and Technology | Peng B.-H.,Southwest University of Science and Technology | Liang G.,Luzhou North Chemical Industries Co. | Luo Q.-P.,Southwest University of Science and Technology | Pei C.-H.,Southwest University of Science and Technology
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | Year: 2012

Nitrated bacterial cellulose (NBC) was synthesized from bacterial cellulose (BC) by nitric-sulfuric acid method. The results showed that the network structure of BC were not obviously degraded by this method and the stability of nitrated bacterial cellulose reached the standard for A degree of nitrocellulose. The thermal decomposition activation energy calculated by differential scanning calorimetry results is 212.53 kJ/mol, and the thermal stability of nitrated bacterial cellulose is better than nitrocellulose.


Xu W.,North University of China | An C.,North University of China | Wang J.,North University of China | Dong J.,Luzhou North Chemical Industries Co. | Geng X.,Binzhou University
Propellants, Explosives, Pyrotechnics | Year: 2013

A new insensitive booster explosive based on 2,6-diamino-3,5- dinitropyrazing-1-oxide (LLM-105) was prepared by a solvent-slurry process with ethylene propylene diene monomer (EPDM) as binder. SEM (scanning electron microscopy) was employed to characterize the morphology and particle size of LLM-105 and molding powder. The mechanical sensitivity, thermal sensitivity, shock wave sensitivity, and detonation velocity of the LLM-105/EPDM booster were also measured and analyzed. The results show that both mechanical sensitivity and thermal sensitivity of LLM-105/EPDM are much lower than that of conventional boosters, such as PBXN-5 and A5. Its shock wave sensitivity is also lower than that of PBXN-5 and PBXN-7. When the density of charge is 95 % TMD, its theoretical and measured detonation velocities are 7858 m s-1 and 7640 m s-1, respectively. These combined properties suggested that LLM-105/EPDM can be used as an insensitive booster. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Zhu L.,Luzhou North Chemical Industries Company Ltd | Wu Y.,Assembly Military Representative Office in the Luzhou Area | Dong J.,Luzhou North Chemical Industries Company Ltd | Mao C.-Y.,Assembly Military Representative Office in the Luzhou Area | You D.,Luzhou North Chemical Industries Company Ltd
Binggong Xuebao/Acta Armamentarii | Year: 2012

Variable burning rate propellant is composed of layers of propellants which has the different burning rates. In order to explain the progressive combustibility of variable burning rate propellant, the three double-layer variable burning rate propellant samples were prepared, which had different inner to-outer layer thickness ratios. The shape feature amount and shape function were calculated. The graphic results of σ-Z and ω-Z show that, with the decrease in the thickness of combustion layer, the combustion area is gradually increased, and the growth rate of gas volume increases. Compared with the classic 5/7 propellant, the variable burning rate propellant has a more significant increase in growth surface, and a stronger progressive combustibility. p-t values of the samples were measured by closed bomb test, and Γ-Ψ curve was drawn. The results show the conditions of the progressive combustibility of samples with different inner-to-outer layer thickness ratios. The result from the closed bomb test result is consistent with the theoretical analysis.


Chen M.,Nanjing University of Science and Technology | Xiao Z.,Nanjing University of Science and Technology | Zhang Y.,Xi'an Modern Chemistry Research Institute | Dong C.,Luzhou North Chemical Industries Co.
Proceedings - 29th International Symposium on Ballistics, BALLISTICS 2016 | Year: 2016

An on-line auto mass measurement approach was applied to study the volatilization of the residual solvents during the drying process of the single-based propellant, double-based propellant containing triethyleneglycol dinitrate (TEGDN propellant, denoted as TEGDN-1) and TEGDN propellant containing RDX (denoted as TEGD N-2). Their drying rate curves were obtained by the on-line auto mass meas urement approach. The mechanical properties of the three kinds of propellants were influenced by different residual solvent contents. The propellant strands are sufficiently plastic and elastic to be cut without being deformed when they are dried to a certain residual solvent contents.


Chen M.,Nanjing University of Science and Technology | Zhang Y.,Xi'an Modern Chemistry Research Institute | Dong C.,Luzhou North Chemical Industries Co. | Xiao Z.,Nanjing University of Science and Technology
Propellants, Explosives, Pyrotechnics | Year: 2016

An on-line auto mass measurement approach was applied to study the volatilization of residual solvents during the drying process of a single-based propellant, a double-based propellant containing triethyleneglycol dinitrate (TEGDN propellant, denoted as TEGDN-1) and a TEGDN propellant containing RDX (denoted as TEGDN-2). Drying experiments were conducted at a temperature of 50°C, steady humidity, and atmospheric pressure. According to the drying rate curves obtained by the on-line auto mass measurement approach, it took 44h, 31h and 38h, respectively, for the residual solvent contents of the three kinds of propellants to come to an equilibrium point, which is approximately below 1%. The mechanical properties of propellant strands with different residual solvent contents were tested by a universal testing machine and dynamic thermomechanical analysis (DMA). The results indicate that the mechanical properties of the single-based propellant, TEGDN-1 and TEGDN-2 are influenced by the residual solvent content. The propellant strands are sufficiently plastic and elastic to be cut without being deformed at a broad range of temperature when they are dried to residual solvent contents of 5.8-3.6%, 9-5.7%, and 9.7-6.2%, respectively. In the drying experiment, the on-line auto measurement approach of the residual solvent mass of propellant strands is a highly promising method in view of its improvement in the cutting efficiency of propellant strands. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Zhu L.,Luzhou North Chemical Industries Co. | Ou J.-Y.,Luzhou North Chemical Industries Co. | Yang X.-Y.,Luzhou North Chemical Industries Co. | Wang Y.-J.,Luzhou North Chemical Industries Co.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2012

Al powder, RDX and catalysts was coated by nitrocellulose and formed composite spherical green powder. The modified double-based propellant product was produced by the composite spherical green powder. The effects of the composite spherical green powder on mechanical and combustion properties of formed propellant were studied. Results show that their mechanical properties are much better than that of double-based spherical green powder made propellant. Their low temperature elongation at break from is increased from 7.84% to 26.86%, the max ensile strength at high temperature is close to double increase, and the temperature pressure index is decreased from 0.38 to 0.30.


He X.-J.,University of Sichuan | He X.-J.,Luzhou North Chemical Industries Co. | Xu X.,Luzhou North Chemical Industries Co. | Du L.-P.,Luzhou North Chemical Industries Co. | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2011

In order to improve mechanical property of nitroamine propellant containing a large amount of high-energy solid filler, a certain amount of thermoplastic elastomer (TPE) was added. Through low-temperature drop weight test, charpy impact test for impact-resistance measuring and the closed-bomb test, the mechanical property and static combustion performance of nitroamine propellant containing the thermoplastic elastomer were studied. Results show that thermoplastic elastomer is able to effectively improve low-temperature tenacity and impact-resistance strength of the nitroamine propellant, and burning rate of the nitroamine propellant can be decreased by about 10%, burning rate pressure exponent of the nitroamine propellant can be reduced by about 2%.


Dong J.,Luzhou North Chemical Industries Co. | Ou J.-Y.,Luzhou North Chemical Industries Co. | Zhu L.,Luzhou North Chemical Industries Co. | Li B.,Luzhou North Chemical Industries Co.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2016

To understand the thermal decomposition kinetics and thermal safety property of azido-terminated glycidyl azide polymer (GAPA), its thermal decomposition characteristics was investigated through differential scanning calorimetry(DSC) and thermal gravimetry(TG). The apparent activation energy, pre-exponential factor and thermal decomposition kinetic equation were studied based on the DSC curve peak temperatures and the TG curve decomposition degrees at heating rates of 2 ℃·min-1, 5 ℃·min-1, 10 ℃·min-1 and 20 ℃·min-1. Its kinetic parameters thermodynamic and thermal safety parameters were calculated. The study indicates that there are two stages in the GAPA thermal decomposition reaction with the apparent activation energy EK=218.47 kJ·mol-1, pre-exponential factor AK=1.06×1022s-1, self-ignition temperature Tbpo=506.55 K, self-accelerated decomposition temperature TSADT=496.78 K, free energy of activation ΔG≠=132.76 kJ·mol-1, enthalpy of activation ΔH≠=214.34 kJ·mol-1 and entropy of activation ΔS≠=164.21 J·mol-1·K-1. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.

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