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Polyphenylsulfone (PPSU) is a high-performance engineering plastic renowned for its exceptional thermal stability, chemical resistance, and biocompatibility. Designed for high-demand applications where durability and safety are paramount, it offers a continuous service temperature of ≥180℃ and glass transition temperature (Tg) of ≈220℃, enabling it to withstand harsh environments. Compliant with ISO 10993 (medical) and FDA (food contact) standards, PPSU is widely used in medical devices, electronics, aerospace, and food-contact equipment. Its good processability via injection molding and extrusion also makes it suitable for mass-producing complex parts.
PPSU provides excellent thermal stability with a continuous service temperature of ≥180℃ and a glass transition temperature (Tg) of ≈220℃. It maintains mechanical and dimensional stability under prolonged heat exposure and repeated sterilization conditions, including autoclaving at 134℃, making it suitable for demanding high-temperature applications.
PPSU demonstrates excellent resistance to acids, alkalis, and organic solvents, including hydrochloric acid, sulfuric acid, sodium hydroxide, ethanol, and acetone. Its chemical stability prevents degradation in harsh environments, making it suitable for applications exposed to aggressive chemicals and disinfectants..
PPSU boasts excellent mechanical strength and impact resistance, even at room and elevated temperatures. It can withstand heavy loads and sudden impacts without breaking or deforming, making it suitable for structural components like aerospace interior parts or industrial pump impellers. Its high tensile strength also ensures it resists stretching or tearing, critical for parts like medical dialyzer membranes or electronic component brackets.
Medical-grade PPSU complies with ISO 10993 requirements and is suitable for medical applications requiring biocompatibility and repeated sterilization. It withstands common sterilization methods, including autoclaving at 134℃, while maintaining mechanical and dimensional stability.
PPSU offers excellent flow properties for injection molding and extrusion, enabling the production of complex precision parts such as medical connectors and electronic housings. Its easy processing and machining capability support efficient manufacturing with tight dimensional tolerances.
PPSU maintains excellent dimensional stability under temperature and moisture variations, ensuring reliable performance in precision components such as electronic connectors, medical valves, and fluid handling parts.
Specification Items | Details |
Chemical Details | |
Chemical Name | Polyphenylsulfone (PPSU) |
CAS Number | 25608-63-3 |
Molecular Formula | (C₁₂H₈O₂S)ₙ |
Molecular Weight | 30,000–60,000 (high molecular weight ensures mechanical strength and thermal stability) |
Physical & Thermal Properties | |
Appearance | Amorphous, transparent to off-white granule (transparent grade suitable for applications requiring visibility, e.g., medical dialyzers; off-white grade for general industrial use) |
Continuous Service Temperature | ≥180℃ |
Glass Transition Temperature (Tg) | ≈220℃ |
Compliance Standards | |
Biocompatibility | Compliant with ISO 10993 |
Food Contact | Compliant with FDA standards |
Chemical Resistance | Resistant to most acids, alkalis, and organic solvents |
PPSU is widely used in medical devices such as surgical instruments, dialyzer components, and drug delivery systems. Its biocompatibility and excellent sterilization resistance enable reliable performance in reusable medical applications.
For example, PPSU dialyzer housings are transparent, enabling medical staff to monitor blood flow, and chemical-resistant, withstanding disinfectants.
PPSU is used in high-performance electronic components, including EV battery connectors, industrial control connectors, insulation components, and sensor housings. Its excellent thermal stability, electrical insulation, and dimensional stability enable reliable operation in high-temperature environments.
PPSU is used in aerospace interior components such as passenger seat frames, overhead bin latches, and instrument panel parts. Its lightweight design, thermal stability, and impact resistance enable reliable performance under demanding aircraft conditions.
PPSU is used in food-contact equipment such as beverage filling valves, processing components, and reusable food containers. Its excellent thermal stability and chemical resistance enable reliable performance during high-temperature processing, repeated cleaning, and sterilization conditions.
Food-contact PPSU grades can comply with FDA requirements and provide excellent resistance to chemical migration, making them suitable for demanding food-handling applications.
PPSU offers a combination of high-temperature resistance, chemical resistance, impact strength, and biocompatibility. Compared with many standard engineering plastics, PPSU maintains reliable performance under repeated sterilization, harsh chemical exposure, and demanding operating conditions.
Yes. Medical-grade PPSU can withstand repeated sterilization processes, including autoclaving at 134℃, while maintaining mechanical strength and dimensional stability. This makes it suitable for reusable medical instruments and sterilizable components.
Food-contact grades of PPSU can meet relevant regulatory requirements such as FDA standards. Its excellent thermal stability and chemical resistance make it suitable for reusable food containers, beverage processing components, and other high-temperature food-contact applications.
