Resin impregnation and interfacial adhesion behaviors in carbon fiber/epoxy composites: Effects of polymer slip and normalized surface free energy with respect to the sizing agents

AbstractOxygen plasma was used to enhance the surface behavior of polyimide (PI) fibers and PI fiber-reinforced epoxy composites were prepared in our present work. The effects of plasma treating times on the surface properties of PI fiber and the interfacial adhesion of PI fiber/epoxy composites were investigated. Surface chemical composition, surface morphologies and surface free energy of the fibers were characterized by X-ray photoelectron spectroscopy, scanning electron microscopy and dynamic contact angle analysis, respectively. The results suggest that some oxygen functional groups were introduced onto PI fiber surfaces, and the surface roughness of fibers was enhanced. Resultantly, the surface free energy of fibers and the interfacial adhesion of composites were improved by the oxygen plasma treatment. The interlaminar shear strength of the composites increased to 70 MPa when the fibers were treated for 10 min, which proved good interfacial adhesion properties.

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Influence of surface properties on the interfacial adhesion in carbon fiber/epoxy composites

Surface and Interface Analysis ◽

10.1002/sia.5340 ◽

2013 ◽

Vol 46 (1) ◽

pp. 16-23 ◽

Cited By ~ 16

Author(s):

Zhaorui Li ◽

Shuai Wu ◽

Zhen Zhao ◽

Lianghua Xu

Keyword(s):

Carbon Fiber ◽

Surface Properties ◽

Interfacial Adhesion ◽

Epoxy Composites ◽

Carbon Fiber Epoxy

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Explaining Spring-In in Filament Wound Carbon Fiber/Epoxy Composites

Journal of Composite Materials ◽

10.1106/nx2q-n3h6-0fd2-jb7b ◽

2000 ◽

Vol 34 (13) ◽

pp. 1216-1239

Author(s):

JEFF M. GANLEY ◽

ARUP K. MAJI ◽

STEVEN HUYBRECHTS

Keyword(s):

Carbon Fiber ◽

Epoxy Composites ◽

Filament Wound ◽

Carbon Fiber Epoxy

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Interfacial performance enhancement of carbon fiber/epoxy composites by a two-step surface treatment

Journal of Mechanical Science and Technology ◽

10.1007/s12206-020-1208-y ◽

2021 ◽

Vol 35 (1) ◽

pp. 91-97

Author(s):

Jian Shi ◽

Yuji Yamamoto ◽

Mamoru Mizuno ◽

Chunhong Zhu

Keyword(s):

Carbon Fiber ◽

Surface Treatment ◽

Performance Enhancement ◽

Epoxy Composites ◽

Carbon Fiber Epoxy

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Relative Entropy Method Applied for the Fatigue Life Distribution of Carbon Fiber/Epoxy Composites

Entropy ◽

10.3390/e23020224 ◽

2021 ◽

Vol 23 (2) ◽

pp. 224

Author(s):

Changsheng Yuan ◽

Yingjie Liang

Keyword(s):

Experimental Data ◽

Carbon Fiber ◽

Relative Entropy ◽

Least Squares Method ◽

Entropy Method ◽

Epoxy Composites ◽

Order Moment ◽

Kolmogorov Smirnov ◽

Relative Entropy Method ◽

Carbon Fiber Epoxy

This paper verifies the feasibility of the relative entropy method in selecting the most suitable statistical distribution for the experimental data, which do not follow an exponential distribution. The efficiency of the relative entropy method is tested through the fractional order moment and the logarithmic moment in terms of the experimental data of carbon fiber/epoxy composites with different stress amplitudes. For better usage of the relative entropy method, the efficient range of its application is also studied. The application results show that the relative entropy method is not very fit for choosing the proper distribution for non-exponential random data when the heavy tail trait of the experimental data is emphasized. It is not consistent with the Kolmogorov–Smirnov test but is consistent with the residual sum of squares in the least squares method whenever it is calculated by the fractional moment or the logarithmic moment. Under different stress amplitudes, the relative entropy method has different performances.

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