PSU Injection Molding
Services On Aria
We specialize in delivering advanced PSU (Polysulfone) Injection Molding solutions designed to meet the rigorous demands of industries that require exceptional thermal, mechanical, and chemical resistance.
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What is PSU Plastic?
Polysulfone (PSU) is a high-performance thermoplastic known for its exceptional thermal stability, mechanical strength, and chemical resistance.
It belongs to the family of sulfone polymers, which also includes Polyethersulfone (PES) and Polyphenylsulfone (PPSU).
PSU is widely used in demanding applications across industries such as medical, aerospace, automotive, and industrial equipment.
Description
Full Name
Polysulfone
Process
Finishing options
Mold texturing，Laser engraving， Bead Blasting
Hardness
M75, R125, Shore D 80
Prices
$$$
Features
Appearance
Natural color
Strengths
Good Scratch Resistance, High Gloss, Strong toughness, Ease of processing
Tensile Strength
10,200 PSI
Elongation at Break
30%
Density
1.24 g/㎤
Why Choose PSU Injection Molding?
PSU offers a unique combination of properties that make it ideal for demanding applications:
High Thermal Resistance
PSU can withstand continuous exposure to high temperatures up to 180°C (356°F), making it suitable for heat-intensive environments.
Mechanical Strength
It provides excellent dimensional stability and durability under mechanical stress.
Chemical Resistance
PSU is resistant to a wide range of chemicals, including acids, bases, and solvents.
Transparency
Its natural transparency makes it ideal for applications requiring visibility, such as medical devices.
Biocompatibility
PSU is FDA-compliant and suitable for medical and food-contact applications.
Applications of PSU Injection Molding
PSU is widely used in industries where performance and reliability are critical:
PSU Injection Molding Material Properties
PSU Plastic Properties
Value
Tensile Strength （MPa）
75
Flexural Modulus（GPa）
2.5 - 2.70
Drying Temperature（℃）
120
Drying Time（hr）
6
Mold Temperature（℃）
140～180
Melt Temperature（℃）
180～210
Injection Pressure（MPa）
80～120
Injection Speed（ mm/sec）
50 - 150
Cooling Time（S）
20～60
Back Pressure（MPa）
3 ～10
Clamping Force（ton/in2）
2～10
Shrinkage
0.4% to 0.8%
PSU Injection Molding Design Guide
Wall Thickness
- Recommended Range: 1.5 mm to 4 mm.
- Uniformity: Maintain consistent wall thickness to avoid warping, sink marks, or stress concentrations.
Draft Angles
- Recommended Draft: 1° to 2° per side for easy ejection.
- Textured Surfaces: Increase draft angles to 3° to 5° for textured surfaces.
Ribs and Bosses
- Rib Thickness: Keep ribs 50% to 60% of the adjacent wall thickness.
- Boss Design: Use gussets to reinforce bosses and avoid sink marks.
Radii and Corners
- Corner Radii: Use radii of at least 0.5 mm to reduce stress concentrations and improve flow.
- Sharp Corners: Avoid sharp corners, as they can lead to stress cracking.
Undercuts
- Minimize Undercuts: Undercuts complicate mold design and increase costs.
- Use Slides or Lifters: If undercuts are necessary, incorporate slides or lifters in the mold design.
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