scholarly journals Wet spinning of low cost carbon fiber precursor-lignin incorporated polyacrylonitrile co-polymer fiber

2019 ◽  
Author(s):  
Abhilash J. K. ◽  
P. Porkodi ◽  
Hemant Kumar Shukla
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Wet Spinning ◽  
Polymer Fiber ◽  
Carbon Fiber Precursor

Polyacrylonitrile/lignin sulfonate blend fiber for low-cost carbon fiber

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42259-42265 ◽  
Author(s):  
Xiaozhong Dong ◽  
Chunxiang Lu ◽  
Pucha Zhou ◽  
Shouchun Zhang ◽  
Liyong Wang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Wet Spinning ◽  
Blend Fiber ◽  
Spinning Process ◽  
Lignin Sulfonate

Polyacrylonitrile/lignin sulfonate blend fiber spun via wet spinning process could be stabilized rapidly, and thus suitable to produce a low-cost carbon fiber.

A new modification method of exploded lignin for the preparation of a carbon fiber precursor

1993 ◽  
Vol 48 (8) ◽  
pp. 1485-1491 ◽  
Author(s):  
K. Sudo ◽  
K. Shimizu ◽  
N. Nakashima ◽  
A. Yokoyama
Keyword(s):  
Carbon Fiber ◽  
Modification Method ◽  
Carbon Fiber Precursor

ZnCl2 regulate flax-based porous carbon fiber for long cycle stability supercapacitors

2021 ◽  
Author(s):  
Gaigai Duan ◽  
Luying Zhao ◽  
Lian Chen ◽  
Feng Wang ◽  
Shuijian He ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
Low Cost ◽  
Flax Fiber ◽  
Cycle Stability ◽  
Long Cycle

The flax fiber with abundant sources and low cost is an excellent precursor of carbon fiber for supercapacitor. At present, it is very attractive designing high electrochemical performance electrode via...

A robust and low-cost biomass carbon fiber@SiO2 interlayer for reliable lithium-sulfur batteries

2019 ◽  
Vol 295 ◽  
pp. 684-692 ◽  
Author(s):  
Tao Liu ◽  
Xiaolin Sun ◽  
Shimei Sun ◽  
Quanhai Niu ◽  
Hui Liu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Biomass Carbon ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Low Cost Carbon Fiber for the Next Generation of Vehicles:Novel Technologies

2002 ◽  
Author(s):  
C. David Warren ◽  
John T. Shaffer ◽  
Felix L. Paulauskas ◽  
Mohamed G. Abdullah
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Next Generation

Teaching Classical Control System Course With Portable Student-Owned Mechatronic Kits

2012 ◽  
Author(s):  
Eniko T. Enikov ◽  
Estelle Eke
Keyword(s):  
Carbon Fiber ◽  
Mechanical Engineering ◽  
Low Cost ◽  
Systems Design ◽  
Circuit Board ◽  
System Level ◽  
Linear Feedback ◽  
Phase System ◽  
Phase Lead ◽  
Controls Systems

Teaching classical controls systems design to mechanical engineering students presents unique challenges. While most mechanical engineering programs prepare students to be well-versed in the application of physical principles and modeling aspects of physical systems, implementation of closed loop control and system-level analysis is lagging. It is not uncommon that students report difficulty in conceptualizing even common controls systems terms such as steady-state error and disturbance rejection. Typically, most courses focus on the theoretical analysis and modeling, but students are left asking the questions…How do I implement a phase-lead compensator? …What is a non-minimum phase system? This paper presents an innovative approach in teaching control systems design course based on the use of a low-cost apparatus that has the ability to directly communicate with MATLAB and its Simulink toolbox, allowing students to drag-and-drop controllers and immediately test their effect on the response of the physical plant. The setup consists of a DC micro-motor driving a propeller attached to a carbon-fiber rod. The angular displacement of the rod is measured with an analog potentiometer, which acts as the pivot point for the carbon fiber rod. The miniature circuit board is powered by the USB port of a laptop and communicates to the host computer using the a virtual COM port. MATLAB/Simulink communicates to the board using its serial port read/write blocks to command the motor and detect the deflection angle. This presentation describes a typical semester-long experimental protocol facilitated by the low-cost kit. The kit allows demonstration of classical PID, phase lead and lag controllers, as well as non-linear feedback linearization techniques. Comparison between student gains before and after the introduction of the mechatronic kits are also provided.

Carbon Fiber Based Twisted and Coiled Artificial Muscles (TCAMs) for Powered Ankle-Foot Orthoses (AFO)

2021 ◽  
Author(s):  
Parth Kotak ◽  
Jason Wilken ◽  
Kirsten Anderson ◽  
Caterina Lamuta
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Input Voltage ◽  
Input Power ◽  
Artificial Muscles ◽  
Specific Work ◽  
Foot Orthoses ◽  
Ankle Foot Orthoses ◽  
Low Cost Manufacturing

Abstract Ankle foot orthoses (AFOs) control the position and motion of the ankle, compensate for weakness, and correct deformities. AFOs can be classified as passive or powered. Powered AFOs overcome the limitations of passive AFOs by adapting their performance to meet a variety of requirements. However, the actuators currently used to power AFOs are typically heavy, bulky, expensive, or limited to laboratory settings. Thus, there is a strong need for lightweight, inexpensive, and flexible actuators for powering AFOs. In this technical brief, Carbon Fiber/Silicone Rubber (CF/SR) Twisted and Coiled Artificial Muscles (TCAMs) are proposed as novel actuators for powered AFOs. CF/SR TCAMs can lift up to 12,600 times their weight with an input power of only 0.025 W cm-1 and are fabricated from inexpensive materials through a low-cost manufacturing process. Additionally, they can provide a specific work of 758 J kg-1 when an input voltage of 1.64 V cm-1 is applied. A mechanical characterization of CF/SR TCAMs in terms of length/tension, tension/velocity, and active-passive length/tension is presented, and results are compared with the performance of skeletal muscles. A gait analysis demonstrates that CF/SR TCAMs can provide the performance required to supplement lower limb musculature and replicate the gait cycle of a healthy subject. Therefore, the preliminary results provided in this brief are a stepping stone for a dynamic AFO powered by CF/SR TCAMs.

scholarly journals Cadmium-Sensitive Measurement Using a Nano-Copper-Enhanced Carbon Fiber Electrode

Sensors ◽  
2019 ◽  
Vol 19 (22) ◽  
pp. 4901
Author(s):  
Jian Wu ◽  
Zhipeng Xu ◽  
Xian Wang ◽  
Li Wang ◽  
Huadong Qiu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Low Cost ◽  
Mass Transfer Rate ◽  
Linear Range ◽  
The Body ◽  
Detection Sensitivity ◽  
Cadmium Ion ◽  
Low Sensitivity ◽  
Carbon Fiber Electrode ◽  
Fiber Electrode

Enrichment of cadmium ion (Cd2+) from the environment may lead to kidney disease and weakened immunity in the body. Current techniques are not convenient enough to measure Cd2+ concentration in the environment due to low sensitivity and poor linear range. In this paper, a new measurement technique is proposed using a new sensing electrode made of nano-copper-enhanced carbon fiber. Nano-copper was deposited onto the surface of carbon fiber to enhance the current concentration and mass transfer rate of Cd2+ during measurement, which improved the electrochemical detection sensitivity significantly (by up to 3.7 × 108 nA/nM) and broadened the linear range to 10~105 nM. This device provides a low-cost solution for measuring Cd2+ concentration in the environment.

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