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Effect of thermal cycling on carbon fiber‐reinforced PPS composites
Author(s) -
Cao Jingyao,
Chen Leishan
Publication year - 2005
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20148
Subject(s) - materials science , composite material , crystallinity , thermal expansion , temperature cycling , ultimate tensile strength , slippage , modulus , fiber , elastic modulus , thermal , physics , meteorology
Calorimetry, coefficient of thermal expansion (CTE), and tensile modulus were recorded to investigate the effect of thermal cycling on polyphenylene sulfides (PPS) carbon fiber composites. Thermal cycling at higher temperatures increased the degree of crystallinity of PPS, as indicated by increasing heat of melting. CTE measurements during thermal cycling were used to study the anisotropy of the composites in directions parallel and transverse to the fiber orientation. It was noted that increasing crystallinity enhanced the tensile modulus of unidirectional composites, while reducing the tensile modulus of quasi‐isotropic composites. The latter reduction may be due to internal damage or interlaminar slippage associated with the residual thermal stresses caused by thermal mismatch between multiply oriented plies. POLYM. COMPOS., 26:713–716, 2005. © 2005 Society of Plastics Engineers