Why is PBT filament the best material for automated solar panel cleaning systems?

PBT filament is uniquely suited for solar panel cleaning rollers. Its most critical advantage is exceptional hydrolysis resistance, meaning it does not absorb water and lose strength or stiffness when constantly exposed to water and cleaning agents. Additionally, PBT has excellent resistance to ultraviolet (UV) radiation, preventing brittleness and failure from sun exposure, which is paramount for outdoor, automated systems.