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Citation: He Tianbai, Liu Weilian, Zhang Yan, Chen Tianlu, Li Binyao. FRACTURE TOUGHNESS OF CHINA-MADE POLY(PHENYLENE ETHER KETONE)(PEK-C)[J]. Chinese Journal of Applied Chemistry, ;1990, 7(3): 72-75. shu

FRACTURE TOUGHNESS OF CHINA-MADE POLY(PHENYLENE ETHER KETONE)(PEK-C)

1.
Laboratory of Polymer Physics, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received Date: 26 June 1989
Available Online: 12 October 1989
Fund Project:

China-made poly (phenylene ether ketone) (PEK-C) is an amorphous high-performance thermoplast with glass transition temperature 231℃, and tensile modulus 2.43GPa, tensile strength 101 MPa and elongation at break 6.1% at room temperature. Single edge notched specimens were used to measure fracture toughness K_1c and critical strain energy release rate G_1c in terms of linear elastic theory as well as critical J-integral value J_1c in terms of elastic-plastic theory. The values of K_1c, G_1c and J_1c for PEK-C are, respectively,2.34 MPa√m, 2.1 kJ/m² and 2.76 kJ/m² compared wih K_1c 2.86 MPa√m and G_1c 2.07kJ/m² for PEEK of ICI and K_1c 1.96 MPa√m and G_1c 1 kJ/m² for PEKK of DuPont.
- polyphenylene ether ketone,
- fracture toughness,
- fracture
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