The flexural strength of GPO-3 is relatively good, generally ≥200MPa.
GPO-3 is a hard plate-shaped insulating material made by hot pressing an alkali-free glass fiber felt board impregnated with unsaturated polyester resin paste and adding corresponding additives. Its high flexural strength is mainly because the glass fiber has high strength and modulus, which can effectively withstand bending stress, while the polyester resin plays a bonding role, allowing the glass fiber to work together and withstand external forces together.
