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山特维克(Sandvik)公司RDX5液压凿岩机 被引量:1
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作者 周志鸿 田翔 《凿岩机械气动工具》 2020年第4期1-3,共3页
介绍了山特维克(Sandvik)公司RDX5液压凿岩机产品的耐久性参数和性能参数,简述了RDX5凿岩机对HLX5的部件和零件设计改进,概述了RDX5凿岩机的设计特点。
关键词 山特维克 rdx5 HLX5 设计改进 设计特点
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Research on thermal decomposition of 1,3,5-trinitro-1,3,5-triazinane based on differential scanning calorimetry 被引量:1
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作者 YU Shuo TAN Ying-xin 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2020年第3期217-221,共5页
In order to test the thermal decomposition of 1,3,5-trinitro-1,3,5-triazinane(RDX),the linear temperature rise experiment of RDX was carried out by differential scanning calorimeter under different heating rate condit... In order to test the thermal decomposition of 1,3,5-trinitro-1,3,5-triazinane(RDX),the linear temperature rise experiment of RDX was carried out by differential scanning calorimeter under different heating rate conditions.The kinetic calculation of RDX thermal decomposition curve was carried out by Kissinger and Ozawa methods,respectively,and the thermal analysis software was used to calculate the parameters such as self-accelerating decomposition temperature.The results show that the initial decomposition temperature range,decomposition peak temperature range,and decomposition completion temperature range of RDX are 208.4-214.2,225.7-239.3 and 234.0-252.4℃,respectively,and the average decomposition enthalpy is 362.9 J·g^-1.Kissinger method was used to calculate the DSC experimental data of RDX,the apparent activation energy obtained is 190.8 kJ·mol^-1,which is coincident with the results calculated by Ozawa method at the end of the reaction,indicating that the apparent activation energy calculated by the two methods is relatively accurate.When the packaging mass values are 1.0,2.0 and 5.0 kg,respectively,the self-accelerating decomposition temperatures are 97.0,93.0 and 87.0℃,respectively,indicating that with the increase of packaging mass,the self-accelerating decomposition temperature gradually decreases,and the risk increases accordingly. 展开更多
关键词 1 3 5-trinitro-1 3 5-triazinane(RDX) differential scanning calorimetry(DSC) thermal decomposition KINETICS
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Theoretical Studies on Substituent Effect of the Reaction of Amide and Formaldehyde
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作者 LAI Wel-peng LIAN Peng +3 位作者 QIU Shao-jun GE Zhong-xue WANG Bo-zhou XUE Yong-qiang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2010年第6期1007-1010,共4页
The thermodynamic properties of the reaction of amide and formaldehyde were calculated via B3LYP method when substituents chosen included CH3,CH2CH3,CH2CH2CH3,CH2CH2CH2CH3,CH(CH3)2,CH2CH(CH3)2,CH(CH3)CH2CH3 and ... The thermodynamic properties of the reaction of amide and formaldehyde were calculated via B3LYP method when substituents chosen included CH3,CH2CH3,CH2CH2CH3,CH2CH2CH2CH3,CH(CH3)2,CH2CH(CH3)2,CH(CH3)CH2CH3 and C(CH3)3.Based on the optimization of the structures for reactants and products,the thermodynamic functions of all the species for an actual state were obtained.The thermodynamic data and the equilibrium constants were investigated within a temperature range of 300―343.15 K.The calculated results show that the reaction is exothermic and spontaneous.The trends of all thermodynamic properties are consistent with the temperature.The preferential order of the substituent effect is CH2CH(CH3)2CH(CH3)CH2CH3CH2CH2CH2CH3 CH2CH2CH3CH2CH3≈CH(CH3)2C(CH3)3≈CH3. 展开更多
关键词 1 3 5-Trinitro-1 3 5-triazacyclohexane(RDX) Substituent effect THERMODYNAMICS
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