Abstract
Thermal expansion coefficients (CTE) of commingled composites manufactured from commingled yams composed of carbon fibers (CF) and PEEK [poly(ether-ether-ketone)] filaments were measured and compared with those of CF/ PEEK prepreg composites. All specimens showed stable and non-scattered CTE data as a result of the thermal treatment or the repeating measurement on the same specimen. This procedure was necessary to obtain reproducible data. The unidirectional (U-D) commingled composite exhibited lower longitudinal CTE than the U-D prepreg composite, and showed a remarkable decrease of CTE at around Tg of PEEK resin. The CTE of the warp direction in 2-dimensional (2-D) commingled composite, that showed lower CTE than the weft direction due to the higher warp density, was found to be almost similar to that of 2-D prepreg (cross-ply) composite. Assuming the temperature dependence of CTE of the carbon fiber itself, theoretical predictions of CTEs of the U-D commingled and the 2-D prepreg composites were obtained in good agreement with experimental results.
Original language | English |
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Pages (from-to) | 73-79 |
Number of pages | 7 |
Journal | KOBUNSHI RONBUNSHU |
Volume | 50 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1993 |
Externally published | Yes |
Keywords
- Carbon Fiber
- Poly(ether-ether-ketone) Commingled Composite
- Temperature Dependence
- Theoretical Prediction
- Thermal Expansion Coefficient
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics