Direct Spinning of Horizontally Aligned Carbon Nanotube Fibers and Films From the Floating Catalyst Method

Duong, Hai M.; Tran, Thang Q.; Kopp, Reed; Myint, Sandar Myo; Liu, Peng

doi:10.1016/b978-0-12-812667-7.00001-x

Cited by 29 publications

(27 citation statements)

References 80 publications

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“…In both direct SLM and EBM, high energy power is required to heat the copper powder to its melting point for part fabrication. However, the required energy of direct SLM is much higher than that of EBM due to the low energy absorption of pure copper with conventional lasers (wavelength of 1 µm) [41,59,[101][102][103]. Moreover, the high reflected laser radiation in direct SLM of pure copper can damage the system's components.…”

Section: Ultrasonic Additive Manufacturing (Uam)mentioning

confidence: 99%

3D Printing of Highly Pure Copper

Tran

Chinnappan

Lee

et al. 2019

Metals

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159

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Copper has been widely used in many applications due to its outstanding properties such as malleability, high corrosion resistance, and excellent electrical and thermal conductivities. While 3D printing can offer many advantages from layer-by-layer fabrication, the 3D printing of highly pure copper is still challenging due to the thermal issues caused by copper’s high conductivity. This paper presents a comprehensive review of recent work on 3D printing technology of highly pure copper over the past few years. The advantages and current issues of 3D printing methods are compared while different properties of copper parts printed by these methods are summarized. Finally, we provide several potential applications of the 3D printed copper parts and an overview of current developments that could lead to new improvements in this advanced manufacturing field.

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Section: Ultrasonic Additive Manufacturing (Uam)mentioning

confidence: 99%

3D Printing of Highly Pure Copper

Tran

Chinnappan

Lee

et al. 2019

Metals

Self Cite

159

View full text Add to dashboard Cite

show abstract

“…The carbon fiber in CFRP also has the advantage of high elastic modulus and strength for the application of thermal deformation reduction. Hamed Khoshnevis et al [18] studied the mechanical behavior of carbon nanotube fibers spun from the floating catalyst method [19]. Effects of the alignment and compaction of carbon nanotube bundles on the time-dependent behaviors and relaxation process were investigated.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Method to Reduce Thermal Deformation of Ball Screws Based on Carbon Fiber Reinforced Plastics

et al. 2019

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In high-speed precision machining, thermal deformation caused by temperature rise affects the accuracy stability of the machine tool to a significant extent. In order to reduce the thermal deformation of ball screws and improve the accuracy, a new adaptive method based on carbon fiber reinforced plastics (CFRP) was proposed in this study and the thermal deformation of ball screws was determined. By using the sequential coupling method, the thermal–structural coupling analysis of a ball screw was conducted based on the finite element method (FEM). The analysis results were verified through a comparison with the experimental results. Based on the verification, an FE model of the improved ball screw was established to study its thermal characteristics. The key design parameters of the improved ball screw were optimized based on the Kriging model and genetic algorithm (GA). The thermal reduction effect of the improved ball screw was validated through the experimental results. The results indicate that the adaptive method proposed in this research is effective in reducing the thermal deformation of ball screws.

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“…To change the morphology of the materials, many researchers have used different processing methods. Furthermore, CNTs and graphene have been used to synthesize composition materials and they have been applied in various fields [12,13,14]. Khoshnevis et al used floating-catalyst chemical vapor deposition (FC-CVD) to produce CNT fibers and the results showed that for different winding rates, the CNT fibers displayed changes in porosity and density, which further affected the mechanical properties [15].…”

Section: Introductionmentioning

confidence: 99%

Application of Graphene and Carbon Nanotubes on Carbon Felt Electrodes for the Electro-Fenton System

Wang

Lin

2019

Materials

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The electro-Fenton system has the ability to degrade wastewater and has received attention from many researchers. Currently, the core development objective is to effectively increase the degraded wastewater decolorization efficiency in the system. In this study, to improve the electro-Fenton system reaction rate and overall electrical properties, we used polyvinylidene difluoride to fix carbon nanotubes (CNTs) and graphene onto the system cathode (carbon felt electrode), which was then used to process Reactive Black 5 wastewater. Furthermore, we (1) used scanning electron microscopy to observe the structural changes in the electrode surface after modification; (2) used the Tafel curve to determine the electrode corrosion voltage and corrosion rate; and (3) analyzed the azo-dye decolorization level. The results showed that the maximum system decolorization rates of the CNT- and graphene-modified carbon felt electrodes were 55.3% and 70.1%, respectively. These rates were, respectively, 1.2 and 1.5 times higher than that of the unmodified carbon felt electrode, implying that we successfully improved the cathode characteristics. The modified electrode exhibited an improved conductivity and corrosion resistance, which, in turn, improved the system decolorization efficiency. This significantly increased the electro-Fenton system overall efficacy, making it valuable for future applications.

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Direct Spinning of Horizontally Aligned Carbon Nanotube Fibers and Films From the Floating Catalyst Method

Cited by 29 publications

References 80 publications

3D Printing of Highly Pure Copper

3D Printing of Highly Pure Copper

Adaptive Method to Reduce Thermal Deformation of Ball Screws Based on Carbon Fiber Reinforced Plastics

Application of Graphene and Carbon Nanotubes on Carbon Felt Electrodes for the Electro-Fenton System

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