As we’ve seen from the recent explosion of industry-grade open material 3D printers, even relatively low cost and affordable systems are now able to 3D print with temperature, high resistance products. We’ve seen nylon evolve into polycarbonates and even PEEK. And now we see Sabic’s 9085 Ultem, once a Stratasys exclusive, added to the range of the materials offered by 3DXTECH.
The ULTEM 9085 3D filament
Ultem® 9085 PEI (Polyether Imide) is an amorphous, high-performance polymer that combines excellent thermal properties, exceptional dimensional stability, inherent flame retardancy, and good chemical resistance. Ultem® resin offers the ability to create parts with excellent properties at elevated temperatures due to a high glass transition temperature (Tg) of 217°C.
3DXTECH’s ULTEM 9085 has a diameter of 1.75mm (+/- 0.05mm ) and presents itself in a natural / light tan color. Recommended Extruder Temp conditions are pretty high, which means it requires an all-metal extruder to go up to 335 – 350, with a bed Temp: 110 – 120°C. With these temperature requirements, a closed chamber is pretty much mandatory to avoid deformations. 3DXTECH also recommends prepping the bed with Ultem® Tape, Polyimide Tape, Lightly sanded FR4 or Perf board. No cooling fan is required, with low print speeds set at 1000mm/min (as a starting point).
If needed, parts printed using Ultem® 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. There is a simple 5-step ramp up/down process for annealing the Ultem® 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 3: After 1 hour at 300°F, increase oven temp to 400°F and allow to stabilize 1 additional hour.
Step 4: After 1 hour at 400°F, reduce heat back to 300°F and allow to stabilize for 30 minutes.
Step 5: After 30 minutes, turn off oven heat and allow printed parts to return to room temp inside the oven as it cools.
Aerospace Applications: The excellent balance of flame retardancy, low smoke emission, and low smoke toxicity of Ultem 9085 makes it an excellent candidate for aerospace and aircraft applications. Ultem® 9085 meets FAR 25.853 and OSU 65/65 with low toxicity, smoke and flame evolution. Ultem® resins are found in applications, such as personal service units, oxygen panels and components, ventilation system components, connectors, cable ducts, latches, hinges, food tray containers, door handles, and interior cladding parts.
Automotive / Transportation Applications: Ultem® resins provide automotive manufacturers with a high performance, chemically resistant, thermally-stable, cost-effective alternative to metal that is strong enough to replace steel in some applications and light enough to replace aluminum in others. For applications like transmission components, throttle bodies, ignition components, sensors and thermostat housings,
Electrical / Electronics Applications: Ultem resin may be an excellent material choice for today’s demanding electrical applications, including connectors, MCB components like housings, shafts and levers, hard disk drive internals, FOUP’s, BiTS, PCB’s, MCCB internals, Plenum devices, LCD projector internals, fuel cell components and many other applications.