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Effect of infusion strategy on vacuum bagging process and properties of polyamide 6 composites

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Abstract

In this work, glass fiber reinforced polyamide 6 (GF/PA6) composites were fabricated by vacuum bagging (VB) process. An experimental platform for VB process of continuous fiber reinforced polyamide 6 composites was constructed in combination with the in-situ polymerization characteristics of caprolactam. The differences in properties such as crystallinity, reaction conversion rate and mechanical properties of the composites produced by the two infusion strategies were investigated. The results showed that the composites fabricated by isothermal infusion had high crystallinity and good internal homogeneity. Compared with isothermal infusion, the mechanical properties of composites fabricated by non-isothermal infusion were higher. At a curing temperature of 150 °C, the mechanical properties of the composite were enhanced at the outlet than the inlet. Flexural strength and ILSS had been improved by 13.2% and 16.3%, respectively. The flexural strength and flexural modulus were 273.7 MPa and 14.2 GPa, respectively. ILSS of the composites reached a maximum value of 47.3 MPa at 170 °C.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities (Grant No. ZY2204).

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  1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029, Beijing, China

    Xianwen Dong, Ke Chen, Ping Xue, Run Zhang & Mingyin Jia

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  1. Xianwen Dong
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Correspondence to Ke Chen or Mingyin Jia.

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Dong, X., Chen, K., Xue, P. et al. Effect of infusion strategy on vacuum bagging process and properties of polyamide 6 composites. J Polym Res 30, 137 (2023). https://doi.org/10.1007/s10965-023-03507-x

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