Firewire® PSU 3D Printing Filament
Polysulfone (PSU) is a high-temperature aromatic sulfone polymer. PSU has excellent thermal and chemical resistance, making it well suited for demanding applications in automotive, aerospace, electronics, defense, food service, industrial, plumbing, medical, semi-con applications.
Firewire® is 3DXTECH's brand of high-temperature polymers designed specifically for 3D printing the highest performance parts possible. PSU is sold by Solvay under the tradename Udel and by BASF under the tradename Ultrason S.
Attributes of Firewire® Polysulfone (PSU) include:
- Very high thermal properties with a Tg of 185°C and HDT of 175°C
- Excellent hydrolytic resistance
- High Environmental Stress Crack Resistance (ESCR)
- Highly resistant to gamma radiation
- Sterilization capable - including EtO gas, radiation, steam autoclaving, plasma, dry heat and cold sterilization
- Resists most common automotive fluids, including gasoline, antifreeze, transmission fluid, motor oil, power steering fluid, windshield washer fluid
- Inherent flame resistance (V-O)
- Excellent dimensional stability (low creep sensitivity and low, uniform coefficient of thermal expansion) and highly reproducible part-to-part dimensions
- Exceptional strength and modulus, even at elevated temperatures
- Diameter: 1.75mm (+/- 0.05mm)
- Color: Natural / Slight Yellow Cast
- Density: 1.24g/cm3
Recommended Print Conditions: (starting points)
- Extruder Temp: 350 - 380°C (all-metal extruder)
- Bed Temp: 140-160°C
- Bed Prep: Ultem® Tape, Polyimide Tape, Lightly sanded FR4 or Perf board.
- Other: No cooling fan, Print speeds of 1000mm/min (starting point). We recommend printing within a heated enclosure or in a warm build environment.
Annealing Printed Parts: If needed, PSU parts printed on an open source / desktop 3D printer may be annealed in a hot-air oven to reduce any printed-in stresses that may be present in the part. Printed-in stresses may occur in any plastic and may result in lower than expected mechanical properties. If this is an issue with your part, then you can follow the simple 5-step ramp up/down process for annealing your parts.
Step 1: Place printed parts in cool, room-temp oven.
Step 2. Set temp to 300°F and allow to stabilize for 1 hour.
Step 2: After 1 hour at 300°F, increase oven temp to 400°F and allow to stabilize 1 additional hour.
Step 3: After 1 hour at 400°F, reduce heat back to 300°F and allow to stabilize for 30 minutes.
Step 4: After 30 minutes, turn off oven heat and allow printed parts to return to room temp inside the oven as it cools.
Firewire® is a registered trademark of 3DXTECH, it's owners, and affiliates.