Chemical Attack of Graphite/Epoxy by Hydrogen Peroxide

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Techniques for studying the mechanisms of chemical corrosion in fiber-reinforced plastics are of considerable importance. The most common analysis technique for studying chemical changes in polymers is Fourier transform infrared (FT-IR) spectroscopy. For polymers reinforced with graphite fibers, however, study of the matrix is hindered by the presence of the graphite, which strongly absorbs IR radiation in a broad band of wavelengths. The purpose of this study was to investigate the degradation of AS-4/3501-5a graphite/epoxy composite material exposed to solutions of hydrogen peroxide. Evidence was also sought for degradation in high pH (up to pH = 12) solutions. After long-term environmental exposure, a simple gravity flotation technique was used to separate the epoxy matrix from the graphite fibers for FT-IR analysis. The resulting spectroscopic evidence indicates that hydrogen peroxide attacks the secondary amines in the cured epoxy structure. No evidence of attack by high pH solutions was found.

Keywords: Composite materials; Corrosion; FTIR spectroscopy; Graphite/epoxy; Hydrogen peroxide; Hydroxide; Infrared; pH

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702924125366

Affiliations: University of California, San Diego, La Jolla, California 92093-0222; current address: Allied Fibers Technical Center, SPECTRA Composites Group, P.O. Box 31, Petersburg, VA 23804

Publication date: March 1, 1992

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more