Investigation of Flexural Properties of Hexagonal Boron Nitride Added Thermoplastic Composites

Abstract

In this study, 0, 0.5 and 2 wt% hexagonal boron nitride (hBN) were added to 30 wt% short glass fiber reinforced polyamide 66 (PA 66) matrix (GF30) to fabricate the thermoplastic composite materials. The hBN additives were applied by coating of granules of GF30 materials. The hBN coated thermoplastic materials were produced by plastic injection method. The effect of various weight percentages of hBNs on the flexural properties of thermoplastic composites were examined in the produced samples. The produced samples were subjected to three-point bending tests. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Scanning electron microscopy (SEM) were used to analyse structural and physical properties of the composites. The highest enhancement of flexural properties was obtained from the sample of PA 66/GF30/2% hBN. The samples with 2 wt% hBN showed the best flexural properties with an improvement of 85 and 52% flexural modulus and strength, respectively, compared to the samples without hBN (PA 66/ GF30). According to the obtained results of this study, as the percentage of the hBN weight contents increased, the flexural strengths and flexural modulus increased significantly. It was concluded that hBN coated thermoplastic composite samples demonstrated high improvements for flexural properties at optimum rates of hBN. © 2024, Turkish Energy Nuclear and Mining Research Institute. All rights reserved.