The reasonable conduction property is beneficial to release the deposited charges by conduction current in dielectric space charging environment,thus the level of the deep charging and the pulse discharge can effectiv...The reasonable conduction property is beneficial to release the deposited charges by conduction current in dielectric space charging environment,thus the level of the deep charging and the pulse discharge can effectively be weakened and inhibited.A traditional method for conductivity measuring under ground circumstance was used,and both the applied voltage and temperature were varied to determine the dependence of volume conductivity in PTFE modified by different filler contents.The results inferred the volume conductivity was significantly affected by the phenomenon of the percolation conduction,as well as the high-field conduction.The shallow and deep charge traps were considered to be a key factor in volume conductivity variation.In this theory,modified by inorganic semi-conductive filler,the distribution of trap density and depth in PTFE can be controlled to achieve the ideal temperature-dependent conduction property and high-field conduction property,which will finally lead to gentle release of the deposited charges while the electrostatic field reaches the conductivity-variation threshold.展开更多
The project for the research of the pulse plasma reductive desulfurization tech-nology undertaken by Huazhong University of Science and Technology re-cently passed the research achievement appraisal in Wuhan,Hubei pro...The project for the research of the pulse plasma reductive desulfurization tech-nology undertaken by Huazhong University of Science and Technology re-cently passed the research achievement appraisal in Wuhan,Hubei province.The technology combines special features of catalytic reductive desulfuriza-tion and pulse reductive desulfurization.A reducing agent is used to reducesulfur dioxide into sulfur elementary substance in presence of catalyst in ap-propriate reaction conditions.Sulfur elementary substance is then separatedand recovered.A small amount of residual sulfur dioxide has plasma treat-ment such as pulse charging to further increase desulfurization efficiency.Themethod has totally abandoned the technical mechanism of adding alkali sub-stances to conduct neutralization and absorption in traditional desulfurizationtechnologies and created a new concept of reducing sulfur dioxide into sulfurelementary substance.展开更多
Electrically conductive composite films ofpolyaniline and nylon-6.6 are prepared by diffusing aniline followed by oxidative polymerization of aniline into nylon-6.6 matrix. In order to determine the diffusion coeffici...Electrically conductive composite films ofpolyaniline and nylon-6.6 are prepared by diffusing aniline followed by oxidative polymerization of aniline into nylon-6.6 matrix. In order to determine the diffusion coefficient for the chloride ion diffusion into the composite matrix electrochemically, galvanostatic pulse method is used and the diffusion coefficient is estimated to be -6.48× 10^-17 cm^2s^-1. The results are discussed in view of them being potential replacement materials for battery. electrodes and sensors devices.展开更多
文摘The reasonable conduction property is beneficial to release the deposited charges by conduction current in dielectric space charging environment,thus the level of the deep charging and the pulse discharge can effectively be weakened and inhibited.A traditional method for conductivity measuring under ground circumstance was used,and both the applied voltage and temperature were varied to determine the dependence of volume conductivity in PTFE modified by different filler contents.The results inferred the volume conductivity was significantly affected by the phenomenon of the percolation conduction,as well as the high-field conduction.The shallow and deep charge traps were considered to be a key factor in volume conductivity variation.In this theory,modified by inorganic semi-conductive filler,the distribution of trap density and depth in PTFE can be controlled to achieve the ideal temperature-dependent conduction property and high-field conduction property,which will finally lead to gentle release of the deposited charges while the electrostatic field reaches the conductivity-variation threshold.
文摘The project for the research of the pulse plasma reductive desulfurization tech-nology undertaken by Huazhong University of Science and Technology re-cently passed the research achievement appraisal in Wuhan,Hubei province.The technology combines special features of catalytic reductive desulfuriza-tion and pulse reductive desulfurization.A reducing agent is used to reducesulfur dioxide into sulfur elementary substance in presence of catalyst in ap-propriate reaction conditions.Sulfur elementary substance is then separatedand recovered.A small amount of residual sulfur dioxide has plasma treat-ment such as pulse charging to further increase desulfurization efficiency.Themethod has totally abandoned the technical mechanism of adding alkali sub-stances to conduct neutralization and absorption in traditional desulfurizationtechnologies and created a new concept of reducing sulfur dioxide into sulfurelementary substance.
文摘Electrically conductive composite films ofpolyaniline and nylon-6.6 are prepared by diffusing aniline followed by oxidative polymerization of aniline into nylon-6.6 matrix. In order to determine the diffusion coefficient for the chloride ion diffusion into the composite matrix electrochemically, galvanostatic pulse method is used and the diffusion coefficient is estimated to be -6.48× 10^-17 cm^2s^-1. The results are discussed in view of them being potential replacement materials for battery. electrodes and sensors devices.
