Non-isothermal crystallization kinetics of poly(aryl ether ketone) resin and hygrothermal aging properties of its composites

ZHANG Jindong; SUN Honglin; LIU Gang; YAO Jianan; CHEN Chunhai; WANG Ming

doi:10.11868/j.issn.1001-4381.2021.000634

Cailiao gongcheng (Oct 2022)

Non-isothermal crystallization kinetics of poly(aryl ether ketone) resin and hygrothermal aging properties of its composites

ZHANG Jindong,
SUN Honglin,
LIU Gang,
YAO Jianan,
CHEN Chunhai,
WANG Ming

Affiliations

ZHANG Jindong: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
SUN Honglin: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
LIU Gang: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
YAO Jianan: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
CHEN Chunhai: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
WANG Ming: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2021.000634
Journal volume & issue: Vol. 50, no. 10
pp. 139 – 147

Abstract

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Poly(aryl ether ketone) (PAEK) thermoplastic composites can replace some traditional thermosetting composites because of their outstanding toughness, aging resistance, fatigue resistance, low cost, high manufacturing efficiency and recyclability. Thus, PAEK composites have been successfully applied in foreign aviation and other high-end industrial fields. PAEK is a kind of semi-crystalline polymer. Hence, different molding process conditions of PAEK composites lead to different aggregation structures of resin matrix, which have significant influence on mechanical properties and aging resistance of the composites. Crystallization kinetics of domestic PAEK resin was studied. Then, continuous carbon fiber reinforced PAEK composites with different crystallinities were prepared by mold pressing at different cooling conditions. The composites were subjected to hydrothermal aging treatment. Flexural properties of the composites were evaluated. The results show that higher cooling rates can improve the crystallization rates but reduce the crystallinity of PAEK resin. The crystallinity of PAEK resins of the composites prepared at furnace cooling, air cooling and water cooling are about 36.3%, 29.7% and 26.5%, respectively. Thus, the decrease of PAEK crystallinity leads to the decrease of flexural strength of its composites. Moreover, flexural strength retention rates of composites with different crystallinities after hydrothermal aging treatment for 240 h are 88.8%, 86.7% and 86.6%, respectively. Therefore, higher crystallinity can better resist the damage of water on the interface and improve the hydrothermal aging resistance of the composite.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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