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Polyarylethersulfone (PAES) is a high-performance thermoplastic engineering polymer known for its excellent thermal stability, chemical resistance, and mechanical reliability. With a continuous service temperature of up to 200℃ and a glass transition temperature (Tg) of ≈220℃, PAES maintains structural integrity and dimensional stability under prolonged high-temperature conditions.
PAES exhibits outstanding resistance to aggressive chemicals, including acids, alkalis, and organic solvents, while providing excellent creep resistance and long-term mechanical performance. Its compatibility with injection molding, extrusion, and 3D printing processes enables the production of complex precision components with demanding structural requirements.
PAES(Polyarylethersulfone) provides excellent resistance to aggressive chemicals, including 98% sulfuric acid, 50% sodium hydroxide, and organic solvents such as acetone, methylene chloride, and toluene. This chemical stability remains reliable at temperatures up to 150℃, making PAES(Polyarylethersulfone) suitable for chemical processing equipment and corrosive fluid handling applications.
PAES(Polyarylethersulfone) provides excellent thermal stability with a continuous service temperature of up to 200℃ and short-term heat resistance up to 260℃. It retains >80% of its mechanical properties after 10,000 hours at 180℃ (per ISO 2578), ensuring long-term reliability in high-temperature applications. Compared with PPSU (Tg ≈185℃), PAES offers a higher Tg of ≈220℃, maintaining rigidity and dimensional stability under demanding thermal conditions.
PAES(Polyarylethersulfone) provides excellent mechanical performance with a tensile strength of ≈85 MPa, flexural strength of ≈120 MPa, and Izod notched impact strength of ≈70 J/m at 23℃. It maintains excellent creep resistance at elevated temperatures, with creep strain <2% after 1,000 hours under 50 MPa at 180℃ (per ISO 899-1), ensuring long-term structural reliability for demanding applications.
PAES(Polyarylethersulfone) provides outstanding electrical insulation performance with a volume resistivity of >10¹⁶ Ω·cm and dielectric strength of ≈20 kV/mm at 23℃. These properties remain stable across a wide operating temperature range from –50℃ to 200℃ and in humid environments with relative humidity >90%, ensuring reliable performance for high-voltage electrical components.
Medical-grade PAES complies with ISO 10993-1 (biocompatibility) and USP Class VI standards, making it safe for use in implantable devices and surgical instruments. It withstands multiple sterilization cycles, including autoclaving (134℃, 2 bar), ethylene oxide (EO) sterilization, and gamma radiation (25 kGy), without losing mechanical or chemical properties. This makes it ideal for reusable medical tools like laparoscopic graspers and implantable components like orthopedic spacers.
Specification Items | Details |
Chemical Identifiers | |
CAS Number | 25608-63-3 (generic for PAES family; specific grades may have unique identifiers) |
Molecular Formula | (C₁₂H₈O₃S)ₙ (varies slightly by grade; core structure remains consistent) |
Molecular Weight | 40,000–80,000 |
Physical & Thermal Properties | |
Appearance | Off-white to light brown granules; opaque (some grades offer translucent options) |
Density | ≈1.37 g/cm³ |
Continuous Service Temperature | Up to 200℃ |
Glass Transition Temperature (Tg) | ≈220℃ |
Melting Point | ≈310℃ (semi-crystalline grades; amorphous grades have no distinct melting point |
Water Absorption | <0.5% (24h at 23℃, ISO 62) |
Compliance & Performance Standards | |
Biocompatibility | ISO 10993-1, USP Class VI |
Flame Rating | UL94 V-0 (1.6mm thickness, inherent flame retardancy) |
Electrical Insulation | Meets IEC 60243-1 (dielectric strength) and IEC 60093 (volume resistivity) |
PAES(Polyarylethersulfone) is used in aerospace components including sensor housings, fuel line connectors, cabin interior parts, and electrical insulation systems. With thermal stability up to 200℃ and a lightweight density of ≈1.37 g/cm³, PAES delivers reliable performance while helping reduce component weight and improve long-term durability in demanding aerospace environments.
PAES(Polyarylethersulfone) is used in oil & gas applications including downhole tools such as logging instrument housings and valve seats, as well as surface equipment such as chemical storage tanks and pump casings. Its resistance to crude oil, drilling fluids, and acidic gases (H₂S), combined with high-pressure capability up to 10,000 psi, enables reliable performance in demanding oil & gas environments.
Medical-grade PAES is used in medical components including orthopedic spacers, dental abutments, endoscopic instruments, and surgical forceps. With ISO 10993 biocompatibility compliance and excellent sterilization resistance, PAES supports reliable performance in reusable medical devices and short-term implantable applications.
PAES(Polyarylethersulfone) is used in industrial applications including chemical processing equipment such as valves, pumps, and heat exchangers, as well as high-temperature components and electrical insulation parts. Its excellent chemical resistance and thermal stability up to 200℃ enable reliable performance in demanding environments such as pharmaceutical and petrochemical industries.
PAES(Polyarylethersulfone) offers a balanced combination of high-temperature performance, chemical resistance, and mechanical reliability. Compared with PPSU, PAES provides higher thermal capability with a Tg of ≈220℃. Compared with PEEK, PAES provides excellent high-temperature and chemical resistance performance with more balanced overall performance for demanding applications.
PAES(Polyarylethersulfone) provides a continuous service temperature of ≥200℃ and short-term heat resistance up to 260℃. It maintains more than 80% of its mechanical properties after 10,000 hours at 180℃ (per ISO 2578), making it suitable for long-term high-temperature applications.
Medical-grade PAES complies with ISO 10993-1 and USP Class VI standards. It withstands sterilization methods including autoclaving at 134℃ and 2 bar, EO sterilization, and gamma radiation at 25 kGy, making it suitable for reusable medical devices and selected implantable applications.
PAES(Polyarylethersulfone) can be processed through injection molding, extrusion, and 3D printing, enabling manufacturers to produce complex precision components with demanding dimensional requirements.
