What are the key properties of 1.2MM PPSU sheet?

1.2MM PPSU sheet (polyphenylsulfone) is a high-performance engineering thermoplastic known for its excellent balance of thermal, mechanical, chemical, and electrical properties. It is widely used in demanding applications such as medical devices, electrical insulation components, food processing equipment, and industrial structural parts.

One of the most important characteristics of PPSU sheet is its outstanding high-temperature resistance. The material can operate continuously at approximately 180°C while maintaining stable mechanical strength and dimensional integrity. In addition, it can withstand repeated steam sterilization cycles at 121°C to 134°C without significant degradation, making it highly suitable for medical and laboratory environments where sterilization is frequently required.

Another key property is its excellent hydrolysis resistance. PPSU performs well under prolonged exposure to hot water, steam, and high-humidity conditions. Unlike many engineering plastics that may degrade, crack, or lose performance in wet environments, PPSU maintains stable molecular structure and mechanical properties over time. This makes it a reliable material for water systems, medical instruments, and food-grade applications.

In terms of mechanical performance, 1.2MM PPSU sheet offers high toughness and strong impact resistance. It maintains good structural integrity even under low-temperature conditions or mechanical stress. The material is resistant to cracking and brittle failure, which enhances product durability and service life. Even in thin sheet form, it retains sufficient rigidity for precision components and structural parts.

Chemical resistance is another important advantage. PPSU shows good resistance to common cleaning agents, alcohol, sodium hypochlorite, dilute acids, and alkalis. This makes it suitable for applications requiring frequent cleaning and disinfection. However, it is not recommended for long-term exposure to strong oxidizing agents or aggressive organic solvents, where compatibility testing is advised.

From an electrical perspective, PPSU exhibits excellent insulating properties. It has high volume resistivity and stable dielectric strength, making it suitable for electrical insulation components, connectors, housings, and structural supports in electronic systems. Its stability under heat and humidity further enhances reliability in electrical applications.

Dimensional stability is also a key strength of 1.2MM PPSU sheet. With low moisture absorption, the material maintains consistent dimensions even in humid or thermally varying environments. This ensures high precision in machining and long-term assembly accuracy in technical applications.

Overall, 1.2MM PPSU sheet combines heat resistance, hydrolysis resistance, toughness, chemical resistance, and electrical insulation in a single high-performance material. These properties make it a preferred choice for advanced engineering applications that require durability, stability, and reliability under harsh operating conditions.