Enhancing the temperature resistance of hybrid basalt/glass epoxy laminates

Abstract This study examines the tensile properties of hybrid basalt/glass epoxy laminates, specifically focusing on the impact of fiber arrangement on these properties at high temperatures. The composite laminates were manufactured utilizing the hot compression molding technique and underwent tensile testing at 25–400°C. Thermogravimetric analysis (TGA) and chemical composition analysis were used to evaluate the thermal and chemical features of basalt fiber (BF) and glass fiber (GF). The tensile strength and elastic modulus of G₄B₄G₄, B₂G₈B₂, B₆G₆, B₄G₄B₄, G₂B₈G₂, and B₁₂ demonstrated slight enhancements or remained relatively stable when the temperatures increased from ambient temperature (25°C) to 100°C; however, the laminate G₁₂ exhibited the weakest performance. It was also noted that the laminates with a larger percentage of basalt fiber (BF) showed superior performance compared to those with a larger percentage of glass fiber (GF). This was especially evident when the basalt fiber (BF) was used in the outer layer, leading to enhanced performance from ambient temperature up to 400°C. Nevertheless, all the laminates’ tensile strength and elastic modulus significantly decreased under temperatures ranging from 200 to 400°C. Highlights Higher ratios of BF enable hybrid laminates to show more thermal stability. At elevated temperatures, BF laminates perform better than GF Laminates maintain tensile strength up to 100°C but decrease at 200°C. BF in outer layers increases thermal resistance.