Research Study in Evaluation of Graphite Ribbon Composites
Abstract
Action and testing of pyrolytic graphite film polymeric matrix laminates is reported. The films that were used ranged between 0.0001 to 0.0004 in. in thickness. The tensile strength ranged between 30 ksi and 110 ksi and the tensile modulus between 3 million psi and 13 million psi, with the average about 60 ksi and 7 million psi, respectively. The average density was about 1.6 gm/cc. In tests to determine the bondability of the graphite film, an epoxy- polyamide adhesive, a phenoxy adhesive, and an epoxy resin yielded lap shear bond strengths in the order of 1000 psi. Methods for handling the thin high modulus film were developed and multiply laminates were molded. Composite efficiencies, based upon the rule of mixtures, ranged well above 50%. This indicates that effective and useable composites can be fabricated from the graphite film.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1972
- Accession Number
- AD0761124
Entities
People
- Robert W. Froberg