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Density-modulus relationship in graphite fibers made from acrylic yarns
Science (New York, N.Y.)
|July 10, 1970
Summary
Researchers converted polyacrylonitrile yarn into graphite fibers. A linear relationship was found between the density and Young
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Polyacrylonitrile (PAN) fibers are precursors for high-performance carbon materials.
- Graphite fibers offer unique mechanical and thermal properties.
Purpose of the Study:
- To investigate the relationship between density and mechanical properties of graphite fibers derived from PAN.
- To characterize graphite fibers produced via controlled conversion.
Main Methods:
- Conversion of three types of polyacrylonitrile yarn to graphite fibers.
- Measurement of fiber density using established techniques.
- Determination of Young's modulus via tensile testing.
Main Results:
- A linear correlation was observed between the density and Young's modulus of the resulting graphite fibers.
- Observed density range: 1.58–2.18 g/cm³.
- Observed Young's modulus range: 25–112 x 10⁶ psi.
Conclusions:
- The conversion process yields graphite fibers with predictable mechanical properties based on density.
- Density is a key parameter influencing the Young's modulus of PAN-derived graphite fibers.
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