Aerospace and automotive applications

[[email protected]]

Thermal stability
The thermal stability of PSU plastic allows it to remain stable over a wide temperature range, enhancing its applicability in various industries. Its low coefficient of linear thermal expansion (3.1 in/in/°F x 10^-5) minimizes dimensional changes due to temperature variations.

Electrical properties
PSU resin has excellent electrical properties, making it suitable for electronic applications. Its dielectric strength of 425 V/mil ensures good insulating and dielectric properties, which are crucial for the safety and performance of electrical components.

Additional properties
Flame Retardant: It is inherently flame retardant, making it suitable for fire resistance applications.
Food Grade Variants: Food grade versions fresh datasetof PSU plastic are available, making it suitable for food processing and handling applications.
Good machinability: You can machine it to close tolerances without much difficulty.
Table 1: Main properties of polysulfone (PSU)
Property Units ASTM Test PSU
Tensile strength psi D638 10,200
Modulus of elasticity in bending psi D790 390,000
Izod Impact (with notch) ft-lbs/in D256 1.3
Heat deflection temperature °F D648 358 / 345
Water absorption (24 hours) % D570 0.30
Coefficient of linear thermal expansion in/in/°F x 10^-5 D696 3.1
Dielectric strength V/mil D194 425
Applications of Polysulfone (PSU)
Given its strength and light weight, PSU is widely used in the aerospace and automotive industries, especially in components requiring durability and resistance to environmental factors. Applications include aircraft interiors, airline catering carts, automotive bearings, and precision gears.

Additionally, PSUs’ resistance to high temperatures and harsh chemicals makes them particularly suitable for these demanding environments. In aerospace applications, PSUs’ flame retardancy and high strength-to-weight ratio are particularly valuable, contributing to both safety and performance.

Medical and healthcare applications
PSU’s biocompatibility and resistance to sterilization processes make it a prime choice for medical devices and equipment. Its ability to withstand repeated sterilization by steam, ethylene oxide, and gamma rays makes it a suitable material for sterilization cases, dental and surgical instruments, and various medical devices.