Introduction
Polysulfone (PSU) is synthesized from Bisphenol A and 4.4′-Dichlorodiphenyl Sulfone. PSU offers excellent performance in chemical resistance, heat stability (heat deflection temperature of 170℃), and impact strength. With the above characteristics, PSU is a kind of high performance engineering thermoplastic resin.
POLYSULFONE (PSU): TECHNICAL DATA SHEET
| Category |
Specifications |
| Polymer Type |
High-performance thermoplastic |
| Chemical Structure |
Aromatic sulfone polymer |
| CAS No. |
25135-51-7 |
| Appearance |
Amber-transparent pellets |
| Density |
1.24 g/cm³ |
| Glass Transition Temp (Tg) |
185°C |
| Continuous Service Temp |
-100°C to +180°C |
Key Properties
| Property |
Performance Data |
| Tensile Strength |
70-75 MPa |
| Flexural Modulus |
2.6-2.8 GPa |
| HDT @1.82MPa |
175-180°C |
| Dielectric Strength |
15-17 kV/mm |
| Hydrolysis Resistance |
Excellent (pH 2-13) |
Grades & Modifications
| Grade |
Characteristics |
| Standard PSU |
Unfilled, medical/industrial |
| PSU + 30% Glass Fiber |
Higher rigidity, HDT 205°C |
| PSU + Carbon Fiber |
ESD/conductive applications |
| Medical Grade |
USP Class VI, ISO 10993 compliant |
Processing Parameters
| Parameter |
Conditions |
| Injection Molding |
Barrel: 320-380°C, Mold: 120-160°C |
| Extrusion |
340-390°C |
| Drying |
4h @120-150°C |
| Melt Flow Rate |
5-25 g/10min (343°C/2.16kg) |
Applications
| Industry |
Uses |
| Medical |
Sterilizable devices, dialysis components |
| Aerospace |
Cabin interiors, ducting |
| Food Processing |
Steam-resistant parts |
| Electrical |
Circuit boards, connectors |
| Water Treatment |
Membrane housings |
Safety & Compliance
| Aspect |
Details |
| Flammability (UL94) |
V-0 (0.8mm) |
| Regulatory |
FDA 21 CFR 177.1655, EU 10/2011 |
| Autoclaving |
1000+ cycles @134°C |
| Chemical Resistance |
Resists alcohols, acids, oils |
Comparison with Other High-Temp Plastics
| Property |
PSU |
PEEK |
PEI |
| Max Continuous Temp |
180°C |
250°C |
170°C |
| Cost |
$$$ |
$$$$$ |
$$$$ |
| Processability |
Excellent |
Difficult |
Good |
| Transparency |
Semi-transparent |
Opaque |
Amber-opaque |
References:
- Handbook of Thermoplastics (2nd Ed.) – Olagoke Olabisi
- ASTM D638 – Tensile Properties of Plastics
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