Polyphenylsulfone (PPSU/PPSF)

Polyphenylsulfone (PPSU) | specified Thermoplastic

Technical Overview

Polyphenylsulfone (PPSU), also known as PPSF, is an engineering-grade thermoplastic renowned for its superior thermal stability and broad chemical resistance. When used with FDM technology, it produces parts that are mechanically strong and dimensionally accurate, enabling reliable performance prediction for final products. Its key differentiator is its ability to withstand harsh conditions, including exposure to a wide range of chemicals and various sterilization methods, making it one of the most capable materials for challenging industrial applications.

Performance and Durability

With a high heat deflection temperature of 189 °C (372 °F), PPSU maintains its structural integrity in high-temperature environments. It exhibits excellent resistance to automotive fluids, including gasoline, oils, and antifreeze. This material can also be sterilized via steam autoclave, Ethylene Oxide (EtO), plasma, and chemical sterilization, making it suitable for medical tooling and prototypes that require stringent cleaning protocols. Its defined mechanical properties, including a flexural strength of 110 MPa, ensure parts are durable enough for rigorous real-world use.

Design and Processing

PPSU is optimized for use on production-grade Fortus 3D printing systems. It utilizes a breakaway support structure, which simplifies the post-processing workflow by allowing for hands-free removal without the need for specialized chemical baths. This streamlined process enables the creation of complex geometries and internal features with greater efficiency, reducing labor and lead times.

Lifecycle: From Prototype to Production

The outstanding properties of PPSU make it a versatile material across the entire product lifecycle. It is ideal for producing high-fidelity functional prototypes that can be tested in the same thermal and chemical conditions as the final product. Beyond prototyping, its strength and stability make it a reliable choice for manufacturing low-volume production parts, custom jigs and fixtures, and other factory-floor tooling.