Carboxyl functionalization of carbon fibers via aryl diazonium reaction in molten urea to enhance interfacial shear strength

2016 ◽  
Vol 362 ◽  
pp. 341-347 ◽  
Author(s):  
Yuwei Wang ◽  
Linghui Meng ◽  
Liquan Fan ◽  
Guangshun Wu ◽  
Lichun Ma ◽  
...  
Keyword(s):  
Shear Strength ◽  
Carbon Fibers ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Diazonium Reaction ◽  
Carboxyl Functionalization

scholarly journals Effect of nanoclay (Kaolinite) on mechanical properties of epoxy-fiber composite

2020 ◽  
Vol 12 (01) ◽  
pp. 38-43
Author(s):  
Hisham M Hasan ◽  
◽  
Ahmed R Majeed ◽  
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Shear Strength ◽  
Tensile Test ◽  
Carbon Fibers ◽  
Epoxy Matrix ◽  
Interfacial Shear Strength ◽  
Fiber Composite ◽  
Weight Fraction ◽  
Interfacial Shear

An experimental investigation using drag-out tensile test to calculate the interfacial shear strength for different embedded lengths of Kevlar and carbon fibers reinforced epoxy matrix with nanoclay (kaolinite) for different ratio weight, the interfacial shear strength increased by with increasing of embedded length and ratio weight fraction of nanoclay that adding to epoxy matrix.

SYNERGISTIC EFFECTS OF PLASMA POLYMERIZATION AND COVALENT SURFACE MODIFICATION OF CARBON FIBERS

2021 ◽  
Author(s):  
DANIEL J. EYCKENS ◽  
LACHLAN SOULSBY ◽  
FILIP STOJCEVSKI ◽  
ATHULYA WICKRAMASINGHA ◽  
LUKE C. HENDERSON
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Surface Modification ◽  
Carbon Fibers ◽  
Plasma Polymerization ◽  
Interfacial Shear Strength ◽  
Synergistic Effects ◽  
Interfacial Shear ◽  
Carbon Fibres ◽  
Electrochemical Pretreatment

This work demonstrates the efficacy in performing an electrochemical pretreatment on carbon fibres to improve the effect of plasma polymerization of acrylic acid on these surfaces. Modified samples demonstrated improve physical properties including tensile strength and Young’s modulus, as well as an increase in composite performance as measured by the interfacial shear strength. The electrochemical pretreatment was shown to enhance the advantages observed when coating fibres using plasma polymerization.

Effect of Water Absorption and Resin Particle on Interfacial Shear Strength of CF/MAPP

2015 ◽  
Vol 1110 ◽  
pp. 23-26
Author(s):  
Tomoaki Hara ◽  
Hideaki Katogi ◽  
Kenichi Takemura
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Water Absorption ◽  
Carbon Fibers ◽  
Room Temperature ◽  
Interfacial Shear Strength ◽  
Fracture Morphology ◽  
Interfacial Shear ◽  
Resin Particle ◽  
Water Absorption Test

In this study, effects of water absorption and adding resin particles around fiber on interfacial shear strength of carbon fiber (CF)/maleic anhydride grafted polypropylene (MAPP) were investigated. In water absorption test, CF/MAPP specimen was immersed in distilled water at room temperature for four weeks. Micro debonding test of water absorbed CF/MAPP was conducted. Micro debonding test of Resin particle added Carbon Fiber (RCF)/MAPP was also conducted. The resin particle size was less than 5μm. Fracture surface of RCF/MAPP was observed by using Scanning Electron Microscope (SEM). As a result, following conclusions are obtained. In case of water absorbed CF/MAPP, the interfacial shear strength decreased 34% compared with that of virgin. The reason is thought that the interface between fiber/matrix was weakened by absorbing water. In case of resin particle, interfacial shear strength of RCF/MAPP increased 34% compared with that of CF/MAPP. From fracture morphology of RCF/MAPP, resin particles on CF surface were found. Therefore, interfacial shear strength of CF/MAPP was increased by the friction on the surface of carbon fibers.

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