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Effects of post-treatment on crystallization behavior of glass fiber-reinforced polyamide 66 composite with red phosphorus flame retardant

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Abstract

Glass fiber-reinforced polyamide 66 composite with red phosphorus flame retardant (PA66-GF FR (RP)) has excellent strength and flame retardant properties, and is widely used in electrical engineering. In order to further improve the mechanical and crystallization properties of PA66 composites, post-treatment of the composites is necessary. In this paper, the crystallization behavior and melting behavior of PA66-GF25 FR (RP) untreated and treated by three different post-treatment routes were studied by differential scanning calorimetry. The Jeziorny-modified Avrami’s model, Ozawa’s model, and Mo’s model were applied to analysis the non-isothermal kinetics, and Kissinger theory was used to calculate the activation energies of non-isothermal crystallization. The results showed that the Mo’s model can successfully describe the non-isothermal crystallization kinetics of PA66-GF25 FR (RP) untreated and treated by three different post-treatment routes, while the other two models are not applicable. In addition, it is identified that post-treatment processes can improve the crystallinity and crystallization rates of PA66-GF25 FR (RP).

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Acknowledgements

This work was financially supported by National Natural Science Foundation of China (51705295, 51778351), and Shandong University of Science and Technology Research Fund of China (2018 TDJH101), University QingChuang science and technology plan of Shandong (2019KJB015).

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Authors and Affiliations

  1. Department of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

    Shumei Lou, Hui Zhang, Wenying Yin, Guodong Ren, Zhiyuan Chen & Chunjian Su

  2. Shandong Taikai High Vol Switchgear Co., Ltd, Tai’an, 271000, China

    Fang Liu

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  1. Shumei Lou
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Lou, S., Zhang, H., Liu, F. et al. Effects of post-treatment on crystallization behavior of glass fiber-reinforced polyamide 66 composite with red phosphorus flame retardant. J Therm Anal Calorim 147, 7229–7242 (2022). https://doi.org/10.1007/s10973-021-11033-5

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