UV-resistant PSU grades are specially formulated by incorporating advanced UV absorbers and light stabilizers, or through copolymerization modification. These treatments significantly enhance the material's resistance to UV radiation and weathering, making it highly suitable for long-term outdoor and semi-outdoor exposure applications.
The base PSU resin possesses intrinsic flame retardancy (LOI ~30%, UL94 V-0). Building upon this foundation, flame-retardant grades of PSU are formulated with optimized designs to further enhance their flame retardancy rating, smoke density, and comparative tracking index (CTI). These specialized grades are engineered to comply with stringent standards in rail transit, electrical safety, and construction materials.
Glass-fiber reinforced PSU is a modified compound manufactured by incorporating short glass fibers into the base PSU resin. It is typically available in three standard grades containing 10%, 20%, and 30% glass fiber, respectively.
Polysulfone (PSU) is an amorphous, high-performance specialty thermoplastic. Its molecular backbone consists of sulfone (-SO2-), ether (-O-), and phenylene groups. The resin exhibits a characteristic amber transparent appearance.
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