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Optimization and Scheduling of Byproduct Gas System in Steel Plant

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Journal of Iron and Steel Research International 2015年第5期22卷 408-413页

作者： jing-hui yang Jiu-ju CAI Wen-qiang SUN jing-yu LIU State Environmental Protection Key Laboratory of Eco-industry Institute of Thermal and Environmental EngineeringNortheastern University

A mathematical model was proposed to optimize byproduct gas system and reduce the total cost. The scope and boundaries of the system were also discussed at the same time. Boilers and gasholders were buffer users to solve the fluctuation of byproduct gases. The priority of gasholders should be ranked the last. The allocation of surplus ga- ses among gasholders and boilers was also discussed to make full use of gases and realize zero emission targets. Case study shows that the proposed model made good use of byproduct gases and at least 7.8 ~//00 operation cost was re- duced, compared with real data in iron and steel industry.

关键词： iron and steel industry byproduct gas energy saving optimization scheduling

Greatly Enhanced Hydrolytic Degradation Ability of Poly(L-lactide) Achieved by Adding Poly(ethylene glycol)

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Chinese Journal of Polymer Science 2017年第3期35卷 386-399页

作者： yang-peng wang xiao wei jin duan jing-hui yang nan zhang ting huang 王勇 School of Materials Science and Engineering Southwest Jiaotong University Key Laboratory of Advanced Technologies of Materials Ministry of Education of China Chengdu 610031 China

Plasticized poly(L-lactide)(PLLA) materials have been applied in many fields and the microstructure performance of such materials attracts much attention of researchers. However, few reports declared the hydrolytic degradation ability of the plasticized PLLA materials. In this article, a small quantity of poly(ethylene glycol)(PEG) was introduced into PLLA, which aimed to understand the hydrolytic degradation behavior of the plasticized PLLA materials. The microstructures of the plasticized samples were comparatively investigated using scanning electron microscopy(SEM), wide angle X-ray diffraction(WAXD), differential scanning calorimetry(DSC) and Flourier transform infrared spectroscopy(FTIR), etc. The results demonstrated that PEG improved the hydrophilicity of sample surface, and the relatively high content of PEG enhanced the crystallization ability of PLLA matrix. The hydrolytic degradation measurement was carried out at 60 ℃ in an alkaline solution of pH = 12. The results demonstrated that the plasticized PLLA samples exhibited accelerated hydrolytic degradation compared with the pure PLLA sample, and the hydrolytic degradation was also dependent on the PEG content. Further results demonstrated that PEG induced the change of hydrolytic degradation mechanism possibly due to the good dissolution ability of PEG in water, which provided more paths for the penetration of water. Furthermore, the microstructure evolution of the plasticized PLLA during the hydrolytic degradation process was also investigated, and the results demonstrated the occurrence of PLLA crystallization, which was possibly contributed to the decreased hydrolytic degradation rate observed at relatively long hydrolytic degradation time. This work is of great significance and may open a new way for promoting the reclamation of PLLA waste material.

关键词： PLLA/PEG Microstructure Hydrolytic degradation

Annealing Induced Microstructure and Mechanical Property Changes of Impact Resistant Polypropylene Copolymer

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Chinese Journal of Polymer Science 2015年第9期33卷 1211-1211,1212-1224页

作者： jing-wei Chen Jian Dai jing-hui yang Nan Zhang Ting Huang 王勇 Chao-liang Zhang Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science & Engineering Southwest Jiaotong University State Key Laboratory of Oral Diseases Sichuan University

The effects of annealing on microstructure and mechanical properties of an impact resistant polypropylene copolymer （IPC） were investigated. Different annealing temperatures ranging from 80 ℃ to 160 ℃ were selected. The phase reorganization of IPC during annealing process was studied through morphological characterization technologies, including scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The crystalline structure changes in the IPC sample, including the iPP matrix and PE component, were investigated using wide angle X-ray diffraction （WAXD） and differential scanning calorimetry （DSC）. Dynamic mechanical analysis （DMA） was used to analyze the relaxation extent of 1PC before and after annealing. The results showed that annealing induced phase reorganization in IPC and the degree of phase reorganization depended on annealing temperature. The annealed IPC samples exhibited largely increased crystallinity compared with the unannealed one. Intensified damping peak with increased molecular chain mobility was achieved for the annealed IPC samples. At an appropriate annealing tem. perature （140 ℃）, largely enhanced impact strength was achieved for the annealed IPC sample. The toughening mechanisms were analyzed based on the phase reorganization and relaxation behavior.

关键词： Impact resistant polypropylene copolymer Annealing Microstructure Mechanical properties.

Industry 4.0： a way from mass customization to mass personalization production

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Advances in Manufacturing 2017年第4期5卷 311-320页

作者： Yi Wang Hai-Shu Ma jing-hui yang Ke-Sheng Wang School of Business Plymouth University Plymouth UK Department of Production and Quality Engineering Norwegian University of Science and Technology S.P.Andersens Veg 5 7031 Trondheim Norway School of Business Management Shanghai PolytechnicUniversity Shanghai 201209 People's Republic of China

Although mass customization, which utilizes modularization to simultaneously increase product variety and maintain mass production （MP） efficiency, has become a trend in recent times, there are some limitations to mass customization. Firstly, customers do not participate wholeheartedly in the design phase. Secondly, potential combinations are predetermined by designers. Thirdly, the concept of mass customization is not necessary to satisfy individual requirements and is not capable of providing personalized services and goods. Industry 4.0 is a collec- tive term for technologies and concepts of value chain organization. Based on the technological concepts of radio frequency identification, cyber-physical system, the Inter- net of things, Internet of service, and data mining, Industry 4.0 will enable novel forms of personalization. Direct customer input to design will enable companies to increasingly produce customized products with shorter cycle-times and lower costs than those associated with standardization and MP. The producer and the customer will share in the new value created. To overcome the gaps between mass customization and mass personalization, this paper presents a framework for mass personalization production based on the concepts of Industry 4.0. Several industrial practices and a lab demonstration show how we can realize mass personalization.

关键词： Industry 4.0 Smart manufacturing Mass customization production (MCP) Mass personalization production

Simultaneously Improved Dielectric Constant and Breakdown Strength of PVDF-based Composites with Polypyrrole Nanowire Encapsuled Molybdenum Disulfide Nanosheets

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Chinese Journal of Polymer Science 2022年第5期40卷 515-525页

作者： Hua-Bin Luo Xiao-Ren Pan jing-hui yang Xiao-Dong Qi Yong Wang School of Materials Science&Engineering Key Laboratory of Advanced Technology of Materials(Ministry of Education)Southwest Jiaotong UniversityChengdu 610031China

High-performance dielectric polymer composites have received increasing attention due to their important applications in the field of energy *** rational structural design of hybrid fillers can lead to a balance between high dielectric constant and insulation in *** this work,novel hybrid fillers were fabricated by in situ synthesizing one-dimensional polypyrrole nanowires(PPynws)on the twodimensional molybdenum disulfide(MoS_(2)),which integrated the good ion polarization ability of PPynws and the high insulation and adjustable band gap of MoS_(2).Compared with the binary poly(vinylidene fluoride)(PVDF)/MoS_(2) composites,the PVDF/MoS_(2)-PPynws composites exhibited remarkably improved dielectric constant and breakdown strength,while the dielectric loss was still maintained at a low *** optimal ternary composite with 1 wt%MoS_(2)-PPynws showed a high dielectric constant(15@1kHz),suppressed dielectric loss(0.027@1kHz),and high breakdown strength(422.1 MV/m).PPynws inducing strong interfacial polarization and the highly insulated MoS_(2) nanosheets extending the breakdown path mainly contributed to the synchronously enhanced dielectric constant and breakdown *** intriguing synthesis method of PVDF/MoS_(2)-PPynws nanocomposite will open up new opportunities for fabricating nanostructured polymer composites to produce high dielectric materials.

关键词： Hybrid fillers Molybdenum disulfide Polypyrrole nanowires Dielectric composites Breakdown strength

A Nano-Micro Engineering Nanofiber for Electromagnetic Absorber,Green Shielding and Sensor

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Nano-Micro Letters 2021年第2期13卷 112-123页

作者： Min Zhang Chen Han Wen-Qiang Cao Mao-Sheng Cao hui-jing yang Jie Yuan School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Department of Physics Tangshan Normal UniversityTangshan 063000People’s Republic of China School of Information Engineering Minzu University of ChinaBeijing 100081People’s Republic of China

It is extremely unattainable for a material to simultaneously obtain efficient electromagnetic(EM)absorption and green shielding performance,which has not been reported due to the competition between conduction loss and ***,by tailoring the internal structure through nano-micro engineering,a NiCo2O4 nanofiber with integrated EM absorbing and green shielding as well as strain sensing functions is *** the improvement of charge transport capability of the nanofiber,the performance can be converted from EM absorption to shielding,or even ***,as the conductivity rising,the reflection loss declines from −52.72 to −10.5 dB,while the EM interference shielding effectiveness increases to 13.4 dB,suggesting the coexistence of the two EM ***,based on the high EM absorption,a strain sensor is designed through the resonance coupling of the patterned NiCo2O4 *** strategies for tuning EM performance and constructing devices can be extended to other EM functional materials to promote the development of electromagnetic driven devices.

关键词： Electromagnetic absorber Electromagnetic shielding NiCo2O4 nanofiber Sensor

Significantly Enhanced Energy Storage Performances of PEI-based Composites Utilizing Surface Functionalized ZrO_(2) Nanoparticles for High-Temperature Application

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Chinese Journal of Polymer Science 2024年第3期42卷 322-332,I0006页

作者： Qing-Qing Liu Qiu-Hao Lin Xiao-Dong Qi Nan Zhang Ting Huang jing-hui yang Yong Wang School of Chemistry Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of Advanced Technologies of Materials Ministry of Education of ChinaSouthwest Jiaotong UniversityChengdu 610031China

Polymer dielectrics with a high energy density and an available energy storage capacity have been playing an important role in advanced electronics and power systems. Nevertheless, the use of polymer dielectrics in harsh environments is limited by their low energy density at high temperatures. Herein, zirconium dioxide(ZrO_(2)) nanoparticles were decorated with amino group utilizing 4,4-methylenebis(phenyl isocyanate)(AMEO) and successfully incorporated into polyetherimide(PEI) matrix. The dielectric properties, breakdown strength, and energy storage performances of PEI/ZrO_(2)-AMEO nanocomposites were investigated from 25 ℃ to 150 ℃. It is found that the combination of moderate bandgap ZrO_(2) with modest dielectric constant and polar groups at interface with deep trap can offer an available strategy to simultaneously increase the dielectric constant and breakdown strength of polymer dielectrics. As a result, the composites containing ZrO_(2)-AMEO exhibit excellent energy storage performance at elevated temperatures. Specially, the PEI-based composites with 3 vol% ZrO_(2)-AMEO display a maximum discharged energy density(U_(d)) of 3.1 J/cm^(3) at 150 ℃, presenting 90% higher than that of neat PEI. This study may help to better develop the polymer-based dielectric composite applied at elevated temperatures.

关键词： Polyetherimide High temperature dielectric ZrO_(2) Interface

A multifunctional stealthy material for wireless sensing and active camouflage driven by configurable polarization

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Journal of Materials Science & Technology 2023年第1期132卷 42-49页

作者： Min Zhang Mao-Sheng Cao Qiang-Qiang Wang Xi-Xi Wang Wen-Qiang Cao hui-jing yang Jie Yuan School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Department of Physics Beijing Technology and Business UniversityBeijing 100048China School of Electrical and Electronic Engineering Nanyang Technological University639798Singapore Department of Physics Tangshan Normal UniversityTangshan 063000China School of Information Engineering Minzu University of ChinaBeijing 100081China

The dipole species transformation and polarization relaxation configuration are achieved by changing the cobalt ion stoichiometry,which precisely tailors the electromagnetic attenuation performance of bismuth iron cobalt *** the stoichiometric ratio of Fe:Co is 19:1,the optimal reflection loss reaches-60 *** high electromagnetic attenuation performance significantly improve the linear sensitivity of the strain response and active customized stealth capability of the designed multifunctional capacitor-like ***,the wireless multifunctional design integrates energy attenuaten of electromagnetic wave with the wireless sensing and active camouflage functions for the first *** work provides an important step for the realization of electromagnetical multifunctional applications including electromag-netic protection and electromagnetic sensing in artificial beings,medical health and even space travel.

关键词： Electromagnetic absorption Polarization relaxation Electromagnetic sensing Active camouflage

Genetic Analysis of the VP1 Region of Human Enterovirus 71 Strains Isolated in Fuyang,China,During 2008

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Virologica Sinica 2009年第3期24卷 162-170页

作者： Shao-hui MA Jian-sheng LIU jing-jing WANG Hai-jing SHI hui-juan yang Jun-ying CHEN Long-ding LIU Qi-han LI Institute of Medical Biology Chinese Academy of Medical Sciences and Peking Union Medical College Kunming 650118 China

Enterovirus 71 （EV71） is a common cause of Hand, foot, and mouth disease （HFMD） and may also cause severe neurological diseases, such as encephalitis and poliomyelitis-like paralysis. To examine the genetic diversity of EV71, we determined and analyzed the complete VP1 sequences （891 nueleotides） from nine EV71 strains isolated in Fuyang, China. We found that nine EV71 strains isolated were over 98% homologous at the nucleotide level and 93%-100% homologous tO members of the C4 subgenogroup. At the amino acid level, these Fuyang strains were 99% -100% homologous to one another, 97%-100% homologous to members of the C4 subgenogroup, and the histidine（H） at amino acid position 22 was conserved among the Fuyang strains. The results indicate that Fuyang isolates belong to genotype C4, and an H at position 22 appears to be a marker for the Fuyang strains.

关键词： VP1 gene Genotype C Enterovirus 71(EV71)