23/01/2026
In the field of high-performance engineering plastics, the polysulfone family (PSU, PPSU, PESU) has emerged as a "star" in the materials industry due to its outstanding performance and wide range of applications. As a star member of specialty engineering plastics, polysulfone materials have achieved remarkable success in the medical, electronic, automotive, aerospace, and other fields. Today, Dafu New Materials will guide you through an article to understand their characteristics, applications, and future prospects!
I. The Three Brothers of polysulphone Family: A Feature Comparison
The polysulphone family mainly consists of polysulphone (PSU), polysulphone polysulphone (PPSU), and polysulphone (PESU). Each of them has its own focus in terms of chemical structure, performance characteristics, and application fields, collectively forming the complete system of polysulphone materials.
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PSU is the most fundamental member of the Polyphenylene family and possesses excellent comprehensive properties. It exhibits good thermal stability, maintaining excellent mechanical strength and dimensional stability even at high temperatures； it also has outstanding hydrolytic resistance and chemical stability， capable of resisting the erosion of various acids， alkalis， and organic solvents； moreover， it has excellent electrical insulation properties， low water absorption rate， no halogen content， easy processing characteristics， and good flame retardancy.
2. PPSU (Polyphenylene Sulfide): Transparent Guardian
PPSU is the "water-resistant champion" within the polyphenylene sulfide family. Its heat distortion temperature is the highest among the three materials. It possesses extremely high impact toughness and chemical stability, as well as resistance to repeated high-temperature sterilization. PPSU is non-toxic, odorless, resistant to chemical corrosion, and meets the requirements for food contact materials. It is the preferred choice for medical devices and food contact materials.
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3. PESU (Polyphenylene): All-round Warrior
PESU boasts the best overall performance， combining the electrical insulation properties of PSU and the heat resistance of PPSU. It has excellent processing performance， suitable for injection molding， extrusion and other processes. It is resistant to creep and maintains dimensional stability even under high temperatures and heavy loads. PESU has excellent flame retardancy， as well as good electrical insulation and radiation resistance.
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II. Application Areas of the Polyphenylene Family
The outstanding properties of the Polyphenylene family have enabled it to be widely applied in various fields. Here are some of the main application scenarios：
1. Medical Health: A symbol of safety and durability
· PPSU: Baby bottles, disinfection boxes for endoscopes， surgical instrument trays. Due to its ability to withstand high-temperature sterilization and its biocompatibility， it has become the benchmark for medical-grade materials.
· PSU： Humidifiers for ventilators， hemodialysis membranes. Thanks to its hydrolysis resistance and transparency， it ensures the long-term stable operation of the equipment.
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2. Electronics and Electrical Engineering: Guardians in High-Temperature Environments
· PESU: Circuit boards and chip carriers, maintaining stable electrical performance even at 180℃, preventing failure caused by high temperatures.
· PSU: Circuit breakers and relay components, with high insulation and dimensional stability, becoming the core materials for power transmission.
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3. Environmental Protection and New Energy: The Drivers of a Green Future
· PSU/PESU: Water treatment membranes, fuel cell ion exchange membranes, contributing to wastewater treatment and the development of clean energy.
· PPSU: Air purifier casings, corrosion-resistant and lightweight, enhancing the lifespan of the equipment.
4. Automobiles and Aviation: Balancing Lightweight and Durability
·PPSU: Fuel pipes, brake components, resistant to oil and high temperatures, replacing metals to reduce vehicle weight.
·PESU: Aircraft interior parts, thermal shielding layer, able to withstand extreme temperature changes, ensuring flight safety. 2. Electronic and Electrical: Guardians in High-Temperature Environments
·PESU: Circuit boards, chip carriers, maintaining stable electrical performance at 180°C, avoiding failure caused by high temperatures.
·PSU: Circuit breakers, relay components, with high insulation and dimensional stability, becoming the core material for power transmission.
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III. Future Trends: Accelerated Domestic Substitution, Innovation-driven Development
Currently, the domestic market for high-end polysulfone materials is still dominated by foreign enterprises. As domestic enterprises continue to improve their technologies and expand their production capacity, the domestic substitution of polysulfone materials will become the future development trend. Domestic enterprises will increase their research and development investment, improve product quality and performance, and gradually replace imported products.
Polysulfone has excellent comprehensive properties and is widely used. The production and consumption worldwide are showing a steady upward trend. According to the prediction of research institution Grand View Research, by 2027, the demand in the fields of medical devices, food, automobiles, aerospace and aviation, as well as electronic and electrical will account for 70% and will be the main application markets for polysulfone in the future.
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IV. Dafu | Polysulfone Family, Defining the Future with Technology!
Whether it's the milk bottles that safeguard health or the aircraft components that soar through the skies, polysulfone materials are reshaping the boundaries between industry and life with their unparalleled performance.
Dafu Materials will continue to focus on research and production, providing customers with higher-quality products and services. Stay tuned to Dafu Materials to obtain samples and technical solutions of polysulfone materials and seize the initiative in high-end manufacturing!
