Impact behavior and fractographic study of carbon nanotubes grafted carbon fiber-reinforced epoxy matrix multi-scale hybrid composites

2015 ◽  
Vol 69 ◽  
pp. 124-131 ◽  
Author(s):  
S.P. Sharma ◽  
S.C. Lakkad
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Epoxy Matrix ◽  
Hybrid Composites ◽  
Impact Behavior ◽  
Fiber Reinforced ◽  
Multi Scale ◽  
Fractographic Study ◽  
Carbon Fiber Reinforced

scholarly journals Enhanced Mechanical Properties of Multiscale Carbon Fiber/Epoxy Unidirectional Composites with Different Dimensional Carbon Nanofillers

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1670
Author(s):  
Yu Liu ◽  
Dong-Dong Zhang ◽  
Guang-Yuan Cui ◽  
Rui-Ying Luo ◽  
Dong-Lin Zhao
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Epoxy Matrix ◽  
Flexural Modulus ◽  
Fiber Reinforced ◽  
Unidirectional Composites ◽  
Synergistic Mechanism ◽  
Carbon Nanofillers ◽  
Carbon Fiber Reinforced ◽  
Modified Graphene

Ammonia modified graphene-carbon nanotubes/continuous carbon fiber reinforced epoxy unidirectional multiscale composites (AMGNS-MWCNT/CFEP) were prepared by adding ammonia modified graphene and carbon nanotubes to an epoxy matrix to reduce agglomeration of carbon nanofillers in the epoxy matrix and improve composites properties. Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and universal testing machines were used to characterize the properties of carbon nanofillers, AMGNS-MWCNT/epoxy nanocomposites, and AMGNS-MWCNT/CFEP unidirectional composites. When the AMGNS-MWCNT content was 1.0 wt%, flexural strength, the flexural modulus and interlaminar shear strength of AMGNS-MWCNT/CFEP unidirectional composites reached the maximum value of 1520.3 MPa, 138.88 GPa, and 87.80 MPa, respectively, which were 12.5%, 9.42%, and 10.1% higher than that of carbon fiber reinforced epoxy unidirectional composites (CFEP). The synergistic mechanism of two carbon nanofillers in the matrix is discussed.

scholarly journals Multiscale Composites: Assessment of a Feasible Manufacturing Process

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
R. Volponi ◽  
P. Spena ◽  
F. De Nicola ◽  
L. Guadagno
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Manufacturing Process ◽  
Resin Transfer Molding ◽  
Fiber Reinforced ◽  
Transfer Molding ◽  
Macro Scale ◽  
Multiscale Composite ◽  
The Matrix ◽  
Carbon Fiber Reinforced

A very interesting field of research on advanced composite materials is the possibility to integrate new functionalities and specific improvements acting on the matrix of the composite by means of a nanocharged resin. In this way, the composite becomes a so-called “multiscale composite” in which the different phases change from nano to macro scale. For example, the incorporation of nanoscale conductive fillers with intrinsically high electrical conductivity could allow a tailoring of this property for the final material. The properties of carbon nanotubes (CNT) make them an effective candidate as fillers in polymer composite systems to obtain ultralight structural materials with advanced electrical and thermal characteristics. Nevertheless, several problems are related to the distribution in the matrix and to the processability of the systems filled with CNT. Existing liquid molding processes such as resin transfer molding (RTM) and vacuum-assisted resin transfer molding (VARTM) can be adapted to produce carbon fiber reinforced polymer (CFRP) impregnated with CNT nanofilled resins. Unfortunately, the loading of more than 0.3-0.5% of CNT can lead to high resin viscosities that are unacceptable for such kind of processes. In addition to the viscosity issues that are related to the high CNT content, a filtration effect of the nanofillers caused by the fibrous medium may also lead to inadequate final component quality. This work describes the development of an effective manufacturing process of a fiber-reinforced multiscale composite panel, with a tetra-functional epoxy matrix loaded with carbon nanotubes to increase its electrical properties and with GPOSS to increase its resistance to fire. A first approach has been attempted with a traditional liquid infusion process. As already anticipated, this technique has shown considerable difficulties related both to the low level of impregnation achieved, due to the high viscosity of the resin, and to the filtration effects of the dispersed nanocharges. To overcome these problems, an opportunely modified process based on a sort of film infusion has been proposed. This modification has given an acceptable result in terms of impregnation and morphological arrangement of CNTs in nanofilled CFRP. Finally, the developed infiltration technique has been tested for the manufacture of a carbon fiber-reinforced panel with a more complex shape.

scholarly journals Investigation of mechanical impact behavior of short carbon-fiber-reinforced PEEK composites

2015 ◽  
Vol 133 ◽  
pp. 1116-1126 ◽  
Author(s):  
D. Garcia-Gonzalez ◽  
M. Rodriguez-Millan ◽  
A. Rusinek ◽  
A. Arias
Keyword(s):  
Carbon Fiber ◽  
Impact Behavior ◽  
Fiber Reinforced ◽  
Short Carbon Fiber ◽  
Mechanical Impact ◽  
Carbon Fiber Reinforced ◽  
Short Carbon
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