Layer-by-layer assembled nacre-like polyether amine/GO hierarchical structure on carbon fiber surface toward composites with excellent interfacial strength and toughness

2020 ◽  
Vol 198 ◽  
pp. 108296 ◽  
Author(s):  
Qing Wu ◽  
Xin Yang ◽  
Qinqin Wan ◽  
Ruyi Zhao ◽  
Jinqian He ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Hierarchical Structure ◽  
Interfacial Strength ◽  
Fiber Surface ◽  
Layer By Layer ◽  
Carbon Fiber Surface ◽  
Strength And Toughness

Study of Transcrystallization in Polymer Composites

1989 ◽  
Vol 170 ◽  
Author(s):  
Benjamin S. Hsiao ◽  
J. H. Eric
Keyword(s):  
Thermal Conductivity ◽  
Free Energy ◽  
Carbon Fiber ◽  
Plasma Treatment ◽  
Polymer Composites ◽  
High Performance ◽  
Interfacial Strength ◽  
Fiber Surface ◽  
Semicrystalline Polymers ◽  
First Case

AbstractTranscrystallization of semicrystalline polymers, such as PEEK, PEKK and PPS, in high performance composites has been investigated. It is found that PPDT aramid fiber and pitch-based carbon fiber induce a transcrystalline interphase in all three polymers, whereas in PAN-based carbon fiber and glass fiber systems, transcrystallization occurs only under specific circumstances. Epitaxy is used to explain the surface-induced transcrystalline interphase in the first case. In the latter case, transcrystallization is probably not due to epitaxy, but may be attributed to the thermal conductivity mismatch. Plasma treatment on the fiber surface showed a negligible effect on inducing transcrystallization, implying that surface-free energy was not important. A microdebonding test was adopted to evaluate the interfacial strength between the fiber and matrix. Our preliminary results did not reveal any effect on the fiber/matrix interfacial strength of transcrystallinity.

Preparation and Property of Epoxy Based Nano-SiO2/TiO2/Polyimide Hybrid Enhanced Sizing

2011 ◽  
Vol 335-336 ◽  
pp. 96-100
Author(s):  
Cun Zhou ◽  
Jian Li Cheng ◽  
Yu Sun
Keyword(s):  
Carbon Fiber ◽  
Sol Gel ◽  
Fiber Surface ◽  
Nano Particles ◽  
Interface Properties ◽  
Particle Size Analyzer ◽  
Complex Technology ◽  
Carbon Fiber Surface ◽  
Interlaminar Shear ◽  
Micro Morphology

Abstract: An epoxy based nano-SiO2/TiO2/polyimide hybrid enhanced sizing for carbon fiber was prepared by modified SiO2/TiO2precursor in PAA collosol with silane couple agent(WD-50) and eligibility surfactant via sol-gel reaction, and both ultrasonic cavitation and multi-complex technology were used during the process. The properties of PAA-SiO2-TiO2hybrid sizing and micro-morphology of carbon fiber surface were analyzed by FTIR, DSC, Particle Size Analyzer and STM. The results indicated that nanoscale SiO2•TiO2particles dispersed in the hybrid sizing film homogeneously, and a layer with nano particles was formed on carbon fiber surface after treated by the hybrid enhanceing sizing. The roughness was increased and interface properties of carbon fiber would be improved. At the same time both tensile strength and the interlaminar shear strength were increased obviously.

Amine-Functionalized Carbon-Fiber Microelectrodes for Enhanced ATP Detection with Fast-Scan Cyclic Voltammetry

2021 ◽  
Author(s):  
Yuxin Li ◽  
Moriah E. Weese ◽  
Michael T. Cryan ◽  
Ashley E. Ross
Keyword(s):  
Cyclic Voltammetry ◽  
Carbon Fiber ◽  
Adenosine Triphosphate ◽  
Fiber Surface ◽  
Fast Scan Cyclic Voltammetry ◽  
Extracellular Signaling ◽  
Amine Functionalized ◽  
Carbon Fiber Surface ◽  
Carbon Fiber Microelectrodes ◽  
Atp Detection

Here, we provide evidence that functionalizing the carbon-fiber surface with amines significantly improves direct electrochemical adenosine triphosphate (ATP) detection with fast-scan cyclic voltammetry (FSCV). ATP is an important extracellular signaling...

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