Study on thermal stability of typical carbon fiber epoxy composites after airworthiness fire protection test

With toluene 2, 4-diisocyanate (TDI), polyethylene glycol (PEG) and 2,3-Epoxy-1-prop -anol (glycidol) used as the raw materials, two epoxy terminated polyurethanes (EPU) was synthesized by prepolymerization and closed end. Moreover, EPU with high toughhess is chosen as a coating agent for carbon fiber with three ethylene tetramine (TETA) as curing agen. The influence of the content of crosslinking agent in the coating layer on properties of composites and the mechanism of interface toughness are investigated. The chemical structure and thermal property of the EPU were studied with FTIR, 1HNMR and TGA, respectively. It proves that the thermal stability of EPU is more stable than epoxy coating. The interlaminar shear strength (ILSS) of the sized high modulus carbon fiber/epoxy composites is improved to 71MPa, which increased by 19.4% compared with the composites reinforced by unsized high modulus carbon fiber, and DMTA show that using EPU as a new kind of polymer coating for carbon fiber is a feasible method to improve the interfacial performance of high modulus carbon fiber/epoxy composites.

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INVESTIGATION OF THE INFLUENCE OF CARBON FIBER ADDITIVES ON THE THERMAL STABILITY OF FAST-HARDENING FOAM BASED ON STRUCTURED SILICA PARTICLES

Fire and Emergencies prevention elimination ◽

10.25257/fe.2018.3.79-83 ◽

2018 ◽

pp. 79-83

Author(s):

Denis Kuprin ◽

Keyword(s):

Thermal Stability ◽

Carbon Fiber ◽

Silica Particles ◽

Thermal Stability Of ◽

Structured Silica

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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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