The Experts below are selected from a list of 22962 Experts worldwide ranked by ideXlab platform
Minoo Naebe - One of the best experts on this subject based on the ideXlab platform.
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pan precursor fabrication applications and thermal stabilization process in Carbon Fiber production experimental and mathematical modelling
Progress in Materials Science, 2020Co-Authors: Hamid Khayyam, Srinivas Nunna, Reza N. Jazar, Seyed Mousa Fakhrhoseini, Khashayar Badii, Gelayol Golkarnarenji, Satish Kumar, Minoo NaebeAbstract:Abstract Polyacrylonitrile (PAN) is a versatile man-made polymer and has been used in a large array of products since its first mass production in the mid 40s. Among all applications of PAN the widely used application is in manufacture of precursor Fiber for fabrication of Carbon Fibers. The process of PAN-based Carbon Fiber production comprises Fiber spinning, thermal stabilization and Carbonization stages. Carbon Fiber Properties are significantly dependent on the quality of PAN precursor Fiber and in particular the process parameters involved in thermal stabilization. This paper is the first comprehensive review that provides a general understanding of the links between PAN Fiber structure, Properties, and its stabilization process along with the use of mathematical modelling as a powerful tool in prediction and optimization of the processes involved. Since the promise of the mathematical modelling is to predict the future behaviour of the system and the value of the variables for the unseen or unmeasured domain of variables; and in the era of industry 4.0 rise, this review will be valuable in further understanding of the intricate processes of Carbon Fiber manufacture and utilising the advanced mathematical modelling using machine learning techniques to predict and optimize a range of critical factors that control the quality of PAN and resultant Carbon Fibers.
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Energy Saving in Electric Heater of Carbon Fiber Stabilization Oven
2014 4th International Conference on Artificial Intelligence with Applications in Engineering and Technology, 2014Co-Authors: Khashayar Badii, Minoo Naebe, Gelayol Golkarnarenji, Navjeet Dhami, Stephen Atkiss, Derek Buckmaster, Bronwyn Fox, Hamid KhayyamAbstract:Carbon Fiber is an advanced material with high tensile strength and modulus, ideally suited for light weight applications. Carbon Fiber Properties are directly dependent on all aspects of production, especially the process step of thermal stabilization. Stabilization is considered to be one of the most critical process steps. Moreover, the stabilization process is the most energy consuming, time consuming and costly step. As oxidation is an exothermic process, constant airflow to uniformly remove heat from all tows across the towband is indispensable. Our approach is to develop an intelligent computational system that can construct an optimal Computational Fluid Dynamics (CFD) solution. In this study, an electrical heater has been designed by CFD modeling and intelligently controlled. The model results show that the uniform airflow and minimum turbulence kinetic energy can be achieved by combining intelligent system technology with CFD analysis strategy.
Satish Kumar - One of the best experts on this subject based on the ideXlab platform.
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pan precursor fabrication applications and thermal stabilization process in Carbon Fiber production experimental and mathematical modelling
Progress in Materials Science, 2020Co-Authors: Hamid Khayyam, Srinivas Nunna, Reza N. Jazar, Seyed Mousa Fakhrhoseini, Khashayar Badii, Gelayol Golkarnarenji, Satish Kumar, Minoo NaebeAbstract:Abstract Polyacrylonitrile (PAN) is a versatile man-made polymer and has been used in a large array of products since its first mass production in the mid 40s. Among all applications of PAN the widely used application is in manufacture of precursor Fiber for fabrication of Carbon Fibers. The process of PAN-based Carbon Fiber production comprises Fiber spinning, thermal stabilization and Carbonization stages. Carbon Fiber Properties are significantly dependent on the quality of PAN precursor Fiber and in particular the process parameters involved in thermal stabilization. This paper is the first comprehensive review that provides a general understanding of the links between PAN Fiber structure, Properties, and its stabilization process along with the use of mathematical modelling as a powerful tool in prediction and optimization of the processes involved. Since the promise of the mathematical modelling is to predict the future behaviour of the system and the value of the variables for the unseen or unmeasured domain of variables; and in the era of industry 4.0 rise, this review will be valuable in further understanding of the intricate processes of Carbon Fiber manufacture and utilising the advanced mathematical modelling using machine learning techniques to predict and optimize a range of critical factors that control the quality of PAN and resultant Carbon Fibers.
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Gel-spun Carbon nanotubes/polyacrylonitrile composite Fibers. Part III: Effect of stabilization conditions on Carbon Fiber Properties
Carbon, 2011Co-Authors: Yaodong Liu, Han Gi Chae, Satish KumarAbstract:Abstract The oxidative stabilization process of gel-spun Carbon nanotube (CNT)/polyacrylonitrile (PAN) composite Fibers have been studied and optimized. Optimum stabilization time depends on both the applied tension and temperature. Various characterization methods including thermal shrinkage, dynamic mechanical analysis, infrared spectroscopy, and wide angle X-ray diffraction are used to monitor the chemical and structural evolution during stabilization and Carbonization. The relationship between the stabilization conditions of CNT/PAN composite Fiber and the tensile Properties of the resulting Carbon Fibers were investigated. By optimizing stabilization conditions, CNT/PAN based Carbon Fibers with a tensile strength of 4 GPa and a tensile modulus of 286 GPa were obtained using batch Carbonization processing at 1100 °C.
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Stabilization and Carbonization studies of polyacrylonitrile/Carbon nanotube composite Fibers
2010Co-Authors: Satish Kumar, Yaodong LiuAbstract:Carbon Fibers contain more than 90 wt. % Carbon. They have low density, high specific strength and modulus, and good temperature and chemical resistance. Therefore, they are important candidate as reinforcement materials. Carbon Fiber is made by pyrolysing precursor polymers. Polyacrylonitrile (PAN) which has been used as precursor to produce high strength Carbon Fiber is used as precursor in this study. The theoretical tensile strength of Carbon Fibers can reach over 100 GPa. Currently, the best commercial Carbon Fibers reach only 7.5 GPa. To make good quality Carbon Fiber and to narrow the gap between theoretical values and currently achieved experimental Properties, the entire manufacturing process including Fiber spinning, stabilization and Carbonization, needs to be improved optimized. In this dissertation, the stabilization processes of gel-spun PAN/Carbon nanotubes (CNTs) composite Fibers are studied. PAN/CNT (1 wt. % CNT) composite Fibers are spun by dry-jet gel-spinning. Three types of CNTs with different number of walls and varying catalyst content are used as additives. The effect of different types of CNTs on the Properties of the stabilized Fibers was compared. It is found that the CNTs with the highest surface area shows the best reinforcement efficiency on the tensile modulus, and reduces the formation of β-amino nitrile. The residual catalyst in the range of 1 to 4 wt. % shows little effect on the mechanical Properties of the stabilized Fibers. Stabilization involves complex chemical reactions, including cyclization, oxidation, dehydration, and cross-linking. These complex reactions are separated by using different gas environments during stabilization. The cross-linking reaction has the highest activation energy among all stabilization reactions, and requires a temperature higher than 300 °C to be completed. The effect of applied tension on the stabilized Fiber Properties are investigated, and it is found that higher tension leads to better Properties for the stabilized Fiber, including higher Young’s modulus, higher orientation, less formation of β-amino nitrile, and less shrinkage. The relationship between stabilization conditions and the mechanical Properties of the Carbonized Fiber is investigated, and the methods to identify optimum stabilization conditions are proposed. It is observed that the highest tension should be applied during both stabilization and Carbonization, and the mechanical Properties of the resulting Carbon Fibers are increased if Fibers are further stabilized at a temperature of ∼ 320 °C to improve the cross-linking degree as compared with the Fibers only stabilized at 255 °C. The optimum stabilization time depends on both the stabilization temperature and on the applied tension. A new characterization method by monitoring the dynamic mechanical Properties, while stabilization is in progress is used to narrow down the range of the optimum stabilization time. Also, the effect of Carbonization temperature on the ultimate Carbon Fiber Properties is studied in the batch process Carbonization. Preliminary studies are carried out to find the relationship between the structure and Properties of precursor Fibers and the tensile strength of Carbon Fibers, including mechanical Properties and co-monomers of precursor Fibers.
Hamid Khayyam - One of the best experts on this subject based on the ideXlab platform.
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pan precursor fabrication applications and thermal stabilization process in Carbon Fiber production experimental and mathematical modelling
Progress in Materials Science, 2020Co-Authors: Hamid Khayyam, Srinivas Nunna, Reza N. Jazar, Seyed Mousa Fakhrhoseini, Khashayar Badii, Gelayol Golkarnarenji, Satish Kumar, Minoo NaebeAbstract:Abstract Polyacrylonitrile (PAN) is a versatile man-made polymer and has been used in a large array of products since its first mass production in the mid 40s. Among all applications of PAN the widely used application is in manufacture of precursor Fiber for fabrication of Carbon Fibers. The process of PAN-based Carbon Fiber production comprises Fiber spinning, thermal stabilization and Carbonization stages. Carbon Fiber Properties are significantly dependent on the quality of PAN precursor Fiber and in particular the process parameters involved in thermal stabilization. This paper is the first comprehensive review that provides a general understanding of the links between PAN Fiber structure, Properties, and its stabilization process along with the use of mathematical modelling as a powerful tool in prediction and optimization of the processes involved. Since the promise of the mathematical modelling is to predict the future behaviour of the system and the value of the variables for the unseen or unmeasured domain of variables; and in the era of industry 4.0 rise, this review will be valuable in further understanding of the intricate processes of Carbon Fiber manufacture and utilising the advanced mathematical modelling using machine learning techniques to predict and optimize a range of critical factors that control the quality of PAN and resultant Carbon Fibers.
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Energy Saving in Electric Heater of Carbon Fiber Stabilization Oven
2014 4th International Conference on Artificial Intelligence with Applications in Engineering and Technology, 2014Co-Authors: Khashayar Badii, Minoo Naebe, Gelayol Golkarnarenji, Navjeet Dhami, Stephen Atkiss, Derek Buckmaster, Bronwyn Fox, Hamid KhayyamAbstract:Carbon Fiber is an advanced material with high tensile strength and modulus, ideally suited for light weight applications. Carbon Fiber Properties are directly dependent on all aspects of production, especially the process step of thermal stabilization. Stabilization is considered to be one of the most critical process steps. Moreover, the stabilization process is the most energy consuming, time consuming and costly step. As oxidation is an exothermic process, constant airflow to uniformly remove heat from all tows across the towband is indispensable. Our approach is to develop an intelligent computational system that can construct an optimal Computational Fluid Dynamics (CFD) solution. In this study, an electrical heater has been designed by CFD modeling and intelligently controlled. The model results show that the uniform airflow and minimum turbulence kinetic energy can be achieved by combining intelligent system technology with CFD analysis strategy.
Reza N. Jazar - One of the best experts on this subject based on the ideXlab platform.
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pan precursor fabrication applications and thermal stabilization process in Carbon Fiber production experimental and mathematical modelling
Progress in Materials Science, 2020Co-Authors: Hamid Khayyam, Srinivas Nunna, Reza N. Jazar, Seyed Mousa Fakhrhoseini, Khashayar Badii, Gelayol Golkarnarenji, Satish Kumar, Minoo NaebeAbstract:Abstract Polyacrylonitrile (PAN) is a versatile man-made polymer and has been used in a large array of products since its first mass production in the mid 40s. Among all applications of PAN the widely used application is in manufacture of precursor Fiber for fabrication of Carbon Fibers. The process of PAN-based Carbon Fiber production comprises Fiber spinning, thermal stabilization and Carbonization stages. Carbon Fiber Properties are significantly dependent on the quality of PAN precursor Fiber and in particular the process parameters involved in thermal stabilization. This paper is the first comprehensive review that provides a general understanding of the links between PAN Fiber structure, Properties, and its stabilization process along with the use of mathematical modelling as a powerful tool in prediction and optimization of the processes involved. Since the promise of the mathematical modelling is to predict the future behaviour of the system and the value of the variables for the unseen or unmeasured domain of variables; and in the era of industry 4.0 rise, this review will be valuable in further understanding of the intricate processes of Carbon Fiber manufacture and utilising the advanced mathematical modelling using machine learning techniques to predict and optimize a range of critical factors that control the quality of PAN and resultant Carbon Fibers.
Srinivas Nunna - One of the best experts on this subject based on the ideXlab platform.
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pan precursor fabrication applications and thermal stabilization process in Carbon Fiber production experimental and mathematical modelling
Progress in Materials Science, 2020Co-Authors: Hamid Khayyam, Srinivas Nunna, Reza N. Jazar, Seyed Mousa Fakhrhoseini, Khashayar Badii, Gelayol Golkarnarenji, Satish Kumar, Minoo NaebeAbstract:Abstract Polyacrylonitrile (PAN) is a versatile man-made polymer and has been used in a large array of products since its first mass production in the mid 40s. Among all applications of PAN the widely used application is in manufacture of precursor Fiber for fabrication of Carbon Fibers. The process of PAN-based Carbon Fiber production comprises Fiber spinning, thermal stabilization and Carbonization stages. Carbon Fiber Properties are significantly dependent on the quality of PAN precursor Fiber and in particular the process parameters involved in thermal stabilization. This paper is the first comprehensive review that provides a general understanding of the links between PAN Fiber structure, Properties, and its stabilization process along with the use of mathematical modelling as a powerful tool in prediction and optimization of the processes involved. Since the promise of the mathematical modelling is to predict the future behaviour of the system and the value of the variables for the unseen or unmeasured domain of variables; and in the era of industry 4.0 rise, this review will be valuable in further understanding of the intricate processes of Carbon Fiber manufacture and utilising the advanced mathematical modelling using machine learning techniques to predict and optimize a range of critical factors that control the quality of PAN and resultant Carbon Fibers.