Engineered Interface Chemistry to Improve the Strength of Carbon Fiber Composites Cured by Electron Beam

Vautard, Frederic; Grappe, Hippolyte A.; Ozcan, Soydan

doi:10.1021/ie501678j

Title: Engineered Interface Chemistry to Improve the Strength of Carbon Fiber Composites Cured by Electron Beam

Journal Article · Tue Jul 01 00:00:00 EDT 2014 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie501678j· OSTI ID:1154833

Vautard, Frederic ^[1]; Grappe, Hippolyte A. ^[2];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)

A reactive sizing was designed to achieve high levels of interfacial adhesion and mechanical properties with a carbon fiber-acrylate system cured by electron beam (EB). The sizing was made of a partially cured epoxy sizing with a high density of pendant functional groups (acrylate functionality) able to generate a covalent bonding with the matrix. The interlaminar shear strength was clearly improved from 61 MPa to 81 MPa (+ 33 %) without any post-processing, reaching a similar value to the one obtained with the same system cured by a thermal treatment. Observation of the fracture profiles clearly highlighted a change in the fracture mechanism from a purely adhesive failure to a cohesive failure. Such improvements of the mechanical properties of carbon fiber composites cured by EB, without any post-cure, have not been reported previously to the best of our knowledge. This constitutes a breakthrough for the industrial development of composites EB curing.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1154833

Journal Information:: Industrial and Engineering Chemistry Research, Vol. 53, Issue 32; ISSN 0888-5885

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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References (19)

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36 MATERIALS SCIENCE
sizing
carbon fiber
polymer matrix composites (PMCs)
fiber-matrix bond
acrylate
electron beam curing

Title: Engineered Interface Chemistry to Improve the Strength of Carbon Fiber Composites Cured by Electron Beam

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