Publish Time: 2025-04-15 Origin: Site
Fiber mat composite laminates are insulating materials made by hot-pressing glass fiber mats, carbon fiber mats, or aramid fiber mats with high-performance resins such as epoxy or phenolic resin. These laminates are characterized by excellent electrical insulation, capable of withstanding high voltage with low dielectric loss and strong arc resistance.
Thanks to their high strength and low weight, fiber mat composite laminates are being widely used in power equipment. Compared to traditional ceramics and metals, they offer lower density while maintaining impressive flexural and tensile strength. The material also boasts strong resistance to weathering and corrosion, performing reliably in humid, high-temperature, or corrosive environments.
Applications include insulation partitions in substations, support structures in high-voltage switchgear, and busbar supports. For instance, within high-voltage switchgear, these laminates reduce the risk of short circuits and enhance operational safety. Unlike metal supports, which can rust and degrade in damp environments, composite busbar supports offer superior insulation and help minimize corona discharge.
Looking ahead, as power transmission and distribution systems evolve toward higher voltage levels, fiber mat composite laminates will continue to develop in the direction of higher dielectric strength, lighter weight, and greater environmental compatibility. Advancements such as nano-filled resin systems will further enhance thermal stability and aging resistance.
Ultra-high voltage direct current (UHVDC) transmission systems demand materials with extremely high performance. Composite materials, with their superior strength, fatigue resistance, and insulation, have become indispensable in UHVDC equipment.
These components are typically made from glass fiber reinforced epoxy (GFRP) or carbon fiber reinforced epoxy (CFRP). They offer outstanding mechanical strength, capable of withstanding wind, seismic forces, and harsh environmental conditions. They also resist pollution flashover and UV radiation, making them suitable for complex climate applications.
In real-world applications, composite insulator posts used in UHVDC lines are lighter and more resistant to contamination flashover than traditional ceramic insulators. Composite crossarms exhibit significantly higher strength than steel structures while being much lighter, thereby reducing installation and maintenance costs.
Moreover, composite insulating tie rods are increasingly used in transmission and distribution support systems, effectively minimizing energy loss from corona discharge. With China accelerating the construction of its UHV transmission network—expected to span multiple provinces by 2030—the market demand for these composite components is set to grow rapidly. This trend is driving ongoing innovation in material development, process optimization, and product upgrades.
Molded composite bipolar plates are widely used in high-voltage DC transmission and distribution, fuel cells, and energy storage systems. Manufactured through high-temperature molding of carbon fiber, graphite powder, and thermosetting resin, these plates combine lightweight and high strength with excellent conductivity and insulation properties.
They optimize current distribution and system efficiency while demonstrating strong corrosion resistance and durability in humid and high-temperature environments. Applications include electrode plates in energy storage systems such as lithium batteries and supercapacitors.
In HVDC converter stations, composite bipolar plates improve energy conversion efficiency. In the hydrogen energy sector, fuel cell stacks rely on these plates to enhance both conductivity and longevity.
The future development of molded composite bipolar plates will focus on achieving lower contact resistance, higher conductivity, and greater durability. Innovations like nano-carbon fillers are expected to further enhance performance, broadening their applications across energy storage and high-voltage transmission.
With their advantages of high strength, low weight, excellent insulation, and strong weather resistance, power composite materials are playing an increasingly vital role in modern power transmission and distribution equipment. Products such as fiber mat composite laminates, UHVDC composite insulated structural parts, and molded composite bipolar plates are offering safer, more durable, and cost-effective solutions for the power industry.
As smart grids and new energy storage technologies continue to advance, the application scenarios for composite materials will further expand. Supported by cutting-edge manufacturing techniques and next-generation material development, the power sector is set to enter a new era of efficiency, safety, and sustainability—powered by composites.