Annealing effects on the crystallinity of polyetheretherketone (PEEK) and its carbon fiber composite
β Scribed by Gunilla M. K. Ostberg; James C. Seferis
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 655 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0021-8995
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## Abstract The viscoelastic properties of the amorphous and semicrystalline PEEK and of a PEEKβbased composite (APC2) have been analyzed as a function of the aging time and related free volume relaxation, at temperatures close to the glass transition temperature. The effect of thermal treatments (
Carbon fiber (CF) containing 1.4 and 2.1 mmol/g of -COOH and -OH groups, respectively, was functionalized by using an excess of tolylene-2,4-diisocyanate. The NCO-modified CF was submitted to a graft reaction with hydroxyl-terminated polybutadiene (HTPB). The HTPB-grafted carbon fiber was employed a