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The effect of thermal ageing on carbon fibre-reinforced polyetheretherketone (PEEK)

Part II Morphological changes

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Abstract

The morphological properties of carbon fibre-reinforced PEEK (APC-2) laminates subjected to long-term thermal ageing and cycling treatments have been studied using differential scanning calorimetry and wide-angle X-ray diffraction techniques. This work sought provided a structural explanation for measured changes in mechanical properties. Annealing at 120 ° had no effect but significant changes in crystal content and crystal perfection occurred at 250 ° and 310 °C. At 250 °C, for short ageing periods, both crystal growth and perfection processes were observed. For longer ageing periods, there was a multiple increase in capital perfection. Initial ageing at 310 °C caused rapid crystal growth, but further ageing resulted in a reduction in measured crystal contents due to thermal degradation.

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Buggy, M., Carew, A. The effect of thermal ageing on carbon fibre-reinforced polyetheretherketone (PEEK). J Mater Sci 29, 2255–2259 (1994). https://doi.org/10.1007/BF01154707

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  • DOI: https://doi.org/10.1007/BF01154707

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