scholarly journals Carbon Fiber Composite Molecular Sieves for Gas Separation

1994 ◽  
Vol 344 ◽  
Author(s):  
M. Jagtoyen ◽  
F. Derbyshire ◽  
N. Brubaker ◽  
Y. Q. Fel ◽  
G. Kimber ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Fibers ◽  
Molecular Sieves ◽  
High Performance ◽  
Fiber Composite ◽  
High Strength ◽  
Mesophase Pitch ◽  
High Concentration ◽  
Carbon Fiber Composite ◽  
Temperature Oxidation

IntroductionCarbon fibers are produced commercially from rayon, phenolics, polyacrylonitrile (PAN), or pitch. The last are further divided into fibers produced from isotropic pitch precursors, and those derived from pitch that has been pretreated to introduce a high concentration of carbonaceous mesophase. Over the past few decades, interest in research and manufacturing carbon fibers has overwhelmingly centered on producing fibers with high tensile strength and high modulus for lightweight, high performance composites, where polymers, metals, and carbon can form the continuous matrix. The fibers most commonly used in advanced materials are produced from PAN or mesophase pitch. Graphitized mesophase pitch fibers tend to have higher modulus and lower tensile strength than the PAN-based equivalents. They have advantages in applications requiring high stiffness, high electrical and thermal conductivity, low thermal expansion, and high temperature oxidation resistance, while PAN fibers are employed where high strength is required.

Manufacturing Technique and Property Evaluation of Polypropylene/ Carbon Fiber Composite Braids

2011 ◽  
Vol 239-242 ◽  
pp. 141-144
Author(s):  
Jia Horng Lin ◽  
Jin Mao Chen ◽  
Ching Wen Lin ◽  
Wen Hao Hsing ◽  
Yu Chia Hsu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Fiber ◽  
Thermal Treatment ◽  
Tensile Properties ◽  
Carbon Fibers ◽  
Fiber Composite ◽  
Carbon Fiber Composite ◽  
Manufacturing Technique ◽  
Property Evaluation ◽  
Different Levels

In this study, carbon fibers (CF) were braided with polypropylene (PP) fibers on a 16-spindle braid machine, forming the PP/ CF composite braids. The composite braids with different levels of strength could be obtained by changing the speed of the yarn turntable and volume gauze. The composite braids with optimum tensile strength then received the thermal treatment, which melted the PP fibers to wrap the CF more tightly, stabilizing the structure of the composite braids. According to CNS 11623 (Tensile Properties of Geogrids by the Single), the composite braids were thermal-treated at 170 °C, 180 °C and 190 °C for1 min, 2 min and 3 min, determing the influence of thermal temperature and duration on the tensile strength of PP/ CF composite braids.

Composite Materials Manufacturing Processes

2011 ◽  
Vol 110-116 ◽  
pp. 1361-1367 ◽  
Author(s):  
Mohammad Reza Khosravani
Keyword(s):  
Composite Materials ◽  
High Performance ◽  
Fiber Composite ◽  
High Strength ◽  
Commercial Aircraft ◽  
Carbon Fiber Composite ◽  
Advanced Composites ◽  
Space Reduction ◽  
High Performance Resin ◽  
Vehicle Components

— Using Composite materials are growing more and more today and we have to use them in possible situation. One of the Composite materials applications is on the Airplane and aero space. Reduction of Airplane weight and more adaptability with nature are examples of benefit of using composite materials in aerospace industries. In this article process of manufacturing of composite materials and specially carbon fiber composite are explained. Advance composite materials are common today and are characterized by the use of expensive, high-performance resin systems and high-strength, high-stiffness fiber reinforcement. The aerospace industry, including military and commercial aircraft of all types, is the major customer for advanced composites. Product range now includes materials for low pressure and low temperature. Some using composite materials in aero space are as follow: Satellite Components, Thin Walled Tubing for Aircraft and Satellites, launch vehicle components and honeycomb structures.

scholarly journals Mesophase Pitch-Based Carbon Fibers: Accelerated Stabilization of Pitch Fibers under Effective Plasma Irradiation-Assisted Modification

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6382
Author(s):  
Yuanshuo Peng ◽  
Ruixuan Tan ◽  
Yue Liu ◽  
Jianxiao Yang ◽  
Yanfeng Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Heating Rate ◽  
Carbon Fibers ◽  
High Performance ◽  
Low Cost ◽  
Tensile Modulus ◽  
Mesophase Pitch ◽  
Stabilization Time ◽  
Plasma Irradiation

Stabilization is the most complicated and time-consuming step in the manufacture of carbon fibers (CFs), which is important to prepare CFs with high performance. Accelerated stabilization was successfully demonstrated under effective plasma irradiation-assisted modification (PIM) of mesophase pitch fibers (PFs). The results showed that the PIM treatment could obviously introduce more oxygen-containing groups into PFs, which was remarkably efficient in shortening the stabilization time of PFs with a faster stabilization heating rate, as well as in preparing the corresponding CFs with higher performance. The obtained graphitized fiber (GF-5) from the PF-5 under PIM treatment of 5 min presented a higher tensile strength of 2.21 GPa, a higher tensile modulus of 502 GPa, and a higher thermal conductivity of 920 W/m·K compared to other GFs. Therefore, the accelerated stabilization of PFs by PIM treatment is an efficient strategy for developing low-cost pitch-based CFs with high performance.

Designing and Fast 3D Printing of Continuous Carbon Fibers for Biomedical Applications

2019 ◽  
Vol 9 (7) ◽  
pp. 922-928
Author(s):  
Haiguang Zhang ◽  
BaoQuan Qi ◽  
Qingxi Hu ◽  
Biao Yan ◽  
Dali Liu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
3D Printing ◽  
Carbon Fibers ◽  
Biomedical Applications ◽  
Bone Repair ◽  
Biomedical Application ◽  
Fiber Composite ◽  
High Strength ◽  
Carbon Fiber Composite ◽  
Cell Compatibility

Carbon fibers are excellent materials for engineering biomedical materials and devices owing to their functional properties of low weight, high strength, high chemical and thermal stability, and blood and cell compatibility. Recent studies have demonstrated that the carbon fibers could be used as a scaffolding system for bone repair and regenerative application. However, carbon fiber-based composite products lack the long-term retention of their biological property upon implantation, which greatly affects their wider biomedical applications. In this study, design and fabrication of carbon fibers composite scaffolds using a fast 3D printing technology has been successfully realized, which provides a new direction for the biomedical application of carbon fiber composite materials.

scholarly journals Lightweight Cellulose/Carbon Fiber Composite Foam for Electromagnetic Interference (EMI) Shielding

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1319 ◽  
Author(s):  
Ran Li ◽  
Huiping Lin ◽  
Piao Lan ◽  
Jie Gao ◽  
Yan Huang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Electromagnetic Interference ◽  
Fiber Composite ◽  
Carbon Fiber Composites ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Carbon Fiber Composite ◽  
Foaming Process ◽  
Long Carbon Fibers

Lightweight electromagnetic interference shielding cellulose foam/carbon fiber composites were prepared by blending cellulose foam solution with carbon fibers and then freeze drying. Two kinds of carbon fiber (diameter of 7 μm) with different lengths were used, short carbon fibers (SCF, L/D = 100) and long carbon fibers (LCF, L/D = 300). It was observed that SCFs and LCFs built efficient network structures during the foaming process. Furthermore, the foaming process significantly increased the specific electromagnetic interference shielding effectiveness from 10 to 60 dB. In addition, cellulose/carbon fiber composite foams possessed good mechanical properties and low thermal conductivity of 0.021–0.046 W/(m·K).

scholarly journals Carbon fiber composite molecular sieves

1996 ◽  
Author(s):  
T D Burchell ◽  
M R Rogers ◽  
A M Williams
Keyword(s):  
Carbon Fiber ◽  
Molecular Sieves ◽  
Fiber Composite ◽  
Carbon Fiber Composite

scholarly journals Shape-morphing carbon fiber composite using electrochemical actuation

2020 ◽  
Vol 117 (14) ◽  
pp. 7658-7664 ◽  
Author(s):  
Wilhelm Johannisson ◽  
Ross Harnden ◽  
Dan Zenkert ◽  
Göran Lindbergh
Keyword(s):  
Solid State ◽  
Carbon Fibers ◽  
Fiber Composite ◽  
Lithium Ion ◽  
Proof Of Concept ◽  
Carbon Fiber Composite ◽  
Shape Morphing ◽  
Commercial Carbon ◽  
Structural Battery ◽  
Shape Changes

Structures that are capable of changing shape can increase efficiency in many applications, but are often heavy and maintenance intensive. To reduce the mass and mechanical complexity solid-state morphing materials are desirable but are typically nonstructural and problematic to control. Here we present an electrically controlled solid-state morphing composite material that is lightweight and has a stiffness higher than aluminum. It is capable of producing large deformations and holding them with no additional power, albeit at low rates. The material is manufactured from commercial carbon fibers and a structural battery electrolyte, and uses lithium-ion insertion to produce shape changes at low voltages. A proof-of-concept material in a cantilever setup is used to show morphing, and analytical modeling shows good correlation with experimental observations. The concept presented shows considerable promise and paves the way for stiff, solid-state morphing materials.

An ultra-small few-layer MoS2-hierarchical porous carbon fiber composite obtained via nanocasting synthesis for sodium-ion battery anodes with excellent long-term cycling performance

2019 ◽  
Vol 48 (13) ◽  
pp. 4149-4156 ◽  
Author(s):  
Lingxing Zeng ◽  
Fenqiang Luo ◽  
Xiaochuan Chen ◽  
Lihong Xu ◽  
Peixun Xiong ◽  
...  
Keyword(s):  
High Performance ◽  
Fiber Composite ◽  
Cycling Performance ◽  
Sodium Ion ◽  
Sodium Ion Battery ◽  
Hierarchical Porous Carbon ◽  
Carbon Fiber Composite ◽  
Hierarchical Porous ◽  
Excellent Cycling Stability

The FM-HPCF composite was fabricated as a high-performance anode material for SIBs with excellent cycling stability.

scholarly journals Flexural strengthening of reinforced concrete beams with carbon fibers reinforced polymer (CFRP) sheet bonded to a transition layer of high performance cement-based composite

2012 ◽  
Vol 5 (5) ◽  
pp. 596-626 ◽  
Author(s):  
V. J. Ferrari ◽  
J. B. de Hanai
Keyword(s):  
Carbon Fibers ◽  
Transition Layer ◽  
High Performance ◽  
High Strength ◽  
Steel Fibers ◽  
Reinforced Concrete Beams ◽  
Layer Transition ◽  
Reinforced Polymer ◽  
Cfrp Sheet ◽  
Strengthening Technique

Resistance to corrosion, high tensile strength, low weight, easiness and rapidity of application, are characteristics that have contributed to the spread of the strengthening technique characterized by bonding of carbon fibers reinforced polymer (CFRP). This research aimed to develop an innovate strengthening method for RC beams, based on a high performance cement-based composite of steel fibers (macro + microfibers) to be applied as a transition layer. The purpose of this transition layer is better control the cracking of concrete and detain or even avoid premature debonding of strengthening. A preliminary study in short beams molded with steel fibers and strengthened with CFRP sheet, was carried out where was verified that the conception of the transition layer is valid. Tests were developed to get a cement-based composite with adequate characteristics to constitute the layer transition. Results showed the possibility to develop a high performance material with a pseudo strain-hardening behavior, high strength and fracture toughness. The application of the strengthening on the transition layer surface had significantly to improve the performance levels of the strengthened beam. It summary, it was proven the efficiency of the new strengthening technique, and much information can be used as criteria of projects for repaired and strengthened structures.

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