Tunable Thermal, Mechanical, and Tribological Properties of Polybenzoxazine-Based Composite for Vehicle Applications

In this study, a series of composites comprising polyether ether ketone (PEEK) and carbon fiber (CF)-reinforced polybenzoxazine for high-temperature friction materials vehicle brake applications were developed using compression molding technique. The objective research was to systematically investigate the thermal, mechanical (tensile flexural), tribological performance made from polybenzoxazine-based by varying PEEK/CF mass ratio. Our study reveals substantial improvement effect increased content PEEK fibers on thermal conductivity, coefficient friction, strength composite materials. Meanwhile, introduction found have monotonic positive flexural) properties wear composites. exhibit high strength, with tensile 50.1–78.6 MPa, Young’s modulus 10.2–24.3 GPa, flexural 62.1–88.3 13.1–27.4 GPa. addition, ratio 75:25 exhibits stable (0.33) specific rate (1.79 × 10−7 cm3/Nm at room temperature). Subsequent test ambient temperature, worn surfaces five samples various ratios studied electron microscopy technology (SEM). observation small cracks tiny grooves indicates combined abrasive adhesive mechanism material. experimental results clearly reveal superior excellent characteristics. As result, these show promising potential application in terms braking system applications.