Open Access

ARTICLE

The Thermal Properties, Mechanical Performances and Crystallization behaviors of Poly(aryl Ether Ketone) Copolymers by the effect of Ether/Ketone Ratio

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1 School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China.
2 Guangzhou Tinci Materials Technology Co., Ltd, Guangzhou, China.

* Corresponding Author: e-mail:

Journal of Polymer Materials 2021, 38(3-4), 257-269. https://doi.org/10.32381/JPM.2021.38.3-4.7

Abstract

The effect of the ether/keto ratios on the thermal properties, mechanical performances and crystallization behavior of the Poly(aryl ether ketone)s (PAEK) were investigated. A formula was proposed the estimate the melting temperatures of the PAEKs with high accuracy. Glass transition temperatures were affected by the ether/keto ratios and molecular weights, and were related with the brittle-tough transition of the PAEKs. Mechanical performances of tensile, impact, flexural and compressive strength decreased with the increase of ether/keto ratios, while elongation had a trend of increase. The non-isothermal crystallization curves exhibited well linearity when treated with Jeziorny’s model, and two crystallization processes were found. The activation energies of the PAEKs were calculated to be 550~580 KJ/mol by Doyle’s method. All the PAEKs exhibited spherulites and their sizes decreased with the increase of ether/keto ratios.

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Keywords

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