Overview
PPSU (Polyphenylsulfone) is an ultra-high-performance amorphous thermoplastic known for its exceptional impact resistance, hydrolysis resistance, chemical resistance, high-temperature stability, and sterilization durability.
As a member of the polysulfone family, PPSU offers superior toughness and chemical resistance compared to PSU and PEI, making it one of the most durable engineering plastics available for demanding medical, aerospace, food processing, and industrial applications.
PPSU is widely used in:
- Medical Devices
- Surgical Instruments
- Sterilization Trays
- Aerospace Components
- Food Processing Equipment
- Plumbing Systems
- Fluid Handling Components
- Electrical Insulators
Due to its ability to withstand thousands of sterilization cycles while maintaining mechanical integrity, PPSU is often considered the premium material for reusable medical devices.
Material Specification
| Property | Value |
|---|---|
| Material Designation | PPSU |
| Full Name | Polyphenylsulfone |
| Common Name | PPSU |
| Material Family | High-Performance Thermoplastic |
| Density | 1.28–1.30 g/cm³ |
| Appearance | Transparent Amber, Black |
| Transparency | Semi-Transparent |
| Typical Manufacturing Methods | Injection Molding, Extrusion, CNC Machining |
| Standard Forms | Sheet, Rod, Tube, Pellets |
Chemical Composition
PPSU belongs to the polysulfone polymer family and contains aromatic sulfone groups that provide outstanding thermal and chemical stability.
| Component | Function |
|---|---|
| Polyphenylsulfone Polymer | Structural Matrix |
| Thermal Stabilizers | High-Temperature Performance |
| Processing Additives | Manufacturing Stability |
| Colorants | Appearance Control |
The molecular structure provides exceptional impact strength and hydrolysis resistance.
Common PPSU Grades
| Grade | Characteristics |
|---|---|
| Virgin PPSU | General Engineering Applications |
| Medical Grade PPSU | USP Class VI & ISO 10993 |
| Food Grade PPSU | FDA-Compliant |
| Glass-Filled PPSU | Enhanced Stiffness |
| High-Flow PPSU | Improved Injection Molding |
Mechanical Properties
Typical Values
| Property | Value |
|---|---|
| Tensile Strength | 70–85 MPa |
| Yield Strength | 75–85 MPa |
| Elongation at Break | 50–120% |
| Flexural Strength | 100–130 MPa |
| Flexural Modulus | 2.3–2.8 GPa |
| Hardness | Rockwell M95–105 |
| Compressive Strength | 95–125 MPa |
Typical Mechanical Performance
| Property | Performance |
|---|---|
| Impact Resistance | Outstanding |
| Toughness | Outstanding |
| Strength | Excellent |
| Fatigue Resistance | Excellent |
PPSU offers some of the highest impact resistance among high-performance thermoplastics.
Physical Properties
| Property | Value |
|---|---|
| Density | 1.28–1.30 g/cm³ |
| Water Absorption | 0.3–0.8% |
| Thermal Conductivity | 0.25–0.35 W/m·K |
| Specific Heat Capacity | 1200–1300 J/kg·K |
| Refractive Index | 1.66 |
PPSU maintains excellent dimensional stability under demanding environmental conditions.
Thermal Properties
| Property | Value |
|---|---|
| Glass Transition Temperature | 220°C |
| Heat Deflection Temperature | 200–210°C |
| Continuous Service Temperature | Up to 180°C |
| Short-Term Service Temperature | Up to 220°C |
PPSU provides some of the highest heat resistance among transparent engineering plastics.
Strength-to-Weight Ratio
| Material | Density (g/cm³) | Tensile Strength |
|---|---|---|
| PPSU | 1.29 | 80 MPa |
| PSU | 1.26 | 75 MPa |
| PEI (Ultem) | 1.27 | 110 MPa |
| Stainless Steel 304 | 8.00 | 515 MPa |
PPSU offers excellent mechanical performance while remaining lightweight.
Chemical Resistance
| Chemical Environment | Performance |
|---|---|
| Water | Outstanding |
| Steam | Outstanding |
| Dilute Acids | Excellent |
| Dilute Alkalis | Excellent |
| Alcohols | Excellent |
| Detergents | Outstanding |
| Disinfectants | Outstanding |
| Hydrocarbons | Good |
PPSU provides superior chemical resistance compared with PSU and PEI.
Hydrolysis Resistance
| Property | Performance |
|---|---|
| Steam Resistance | Outstanding |
| Boiling Water Resistance | Outstanding |
| Hydrolysis Stability | Outstanding |
| Sterilization Durability | Outstanding |
PPSU is one of the best plastics available for repeated steam sterilization.
Impact Resistance
| Property | Performance |
|---|---|
| Room Temperature Impact | Outstanding |
| Low Temperature Impact | Excellent |
| Crack Resistance | Outstanding |
| Long-Term Durability | Outstanding |
PPSU significantly outperforms PSU and PEI in impact strength.
Transparency & Optical Properties
| Property | Value |
|---|---|
| Transparency | Good |
| Light Transmission | 80–88% |
| Optical Clarity | Good |
| Natural Color | Amber |
PPSU maintains transparency while providing superior mechanical performance.
Electrical Properties
| Property | Value |
|---|---|
| Volume Resistivity | >10¹⁶ Ω·cm |
| Surface Resistivity | >10¹⁴ Ω |
| Dielectric Strength | 15–20 kV/mm |
| Dielectric Constant | 3.3–3.8 |
PPSU is suitable for demanding electrical insulation applications.
Sterilization Resistance
| Sterilization Method | Performance |
|---|---|
| Steam Autoclave | Outstanding |
| Ethylene Oxide (EtO) | Excellent |
| Gamma Radiation | Excellent |
| Chemical Sterilization | Outstanding |
PPSU can withstand thousands of autoclave cycles with minimal property degradation.
Machinability
| Process | Rating |
|---|---|
| CNC Milling | Excellent |
| CNC Turning | Excellent |
| Drilling | Excellent |
| Tapping | Excellent |
| Precision Machining | Excellent |
Machinability Comparison
| Material | Machinability |
|---|---|
| PPSU | Excellent |
| PSU | Excellent |
| PEI | Good |
| PEEK | Excellent |
PPSU machines accurately and maintains dimensional stability.
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| Injection Molding | Excellent |
| Extrusion | Excellent |
| CNC Machining | Excellent |
| Thermoforming | Good |
| Precision Manufacturing | Excellent |
PPSU is widely used for high-performance molded and machined components.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ISO | PPSU |
| ASTM | Polyphenylsulfone |
| DIN | PPSU |
| JIS | PPSU |
| GB/T (China) | 聚苯砜（PPSU） |
| FDA | Food Grade Available |
| USP Class VI | Medical Grade Available |
Available Forms
| Product Type | Availability |
|---|---|
| Sheet | Yes |
| Rod | Yes |
| Tube | Yes |
| Pellets | Yes |
| Injection Molded Parts | Yes |
| Precision Machined Components | Yes |
Typical Applications
Medical Industry
- Surgical Instrument Handles
- Sterilization Trays
- Medical Device Housings
- Dental Equipment Components
Healthcare Equipment
- Autoclave Components
- Reusable Medical Devices
- Fluid Management Systems
- Sterile Containers
Food Processing Industry
- Beverage Equipment
- Food Contact Components
- Sterilizable Processing Equipment
Aerospace Industry
- Aircraft Interior Components
- High-Temperature Insulators
- Electrical Components
Plumbing & Fluid Systems
- Hot Water Fittings
- Valves
- Manifolds
- Fluid Connectors
Electrical Industry
- Connector Housings
- Electrical Insulators
- High-Performance Switch Components
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| CNC Machining | Excellent |
| Injection Molding | Excellent |
| Medical Component Manufacturing | Outstanding |
| Precision Production | Outstanding |
Advantages
Exceptional Impact Resistance
Among the toughest high-performance thermoplastics available.
Outstanding Sterilization Resistance
Withstands thousands of autoclave cycles.
Excellent Chemical Resistance
Resists disinfectants, cleaning agents, and industrial chemicals.
High Temperature Capability
Continuous service temperatures up to 180°C.
Superior Hydrolysis Resistance
Ideal for hot water and steam environments.
Medical & Food Contact Compliance
Available in FDA and USP Class VI grades.
Limitations
Higher Cost
More expensive than PSU, PC, and many engineering plastics.
Amber Transparency
Not optically clear like Acrylic or Polycarbonate.
Lower Stiffness Than PEEK
Designed more for toughness than structural rigidity.
Processing Complexity
Requires high processing temperatures and specialized equipment.
Comparison with High-Performance Plastics
| Property | PPSU | PSU | PEI | PEEK |
|---|---|---|---|---|
| Impact Resistance | Outstanding | Good | Excellent | Excellent |
| Sterilization Resistance | Outstanding | Outstanding | Excellent | Excellent |
| Heat Resistance | Outstanding | Excellent | Outstanding | Outstanding |
| Chemical Resistance | Better | Good | Good | Excellent |
| Cost | High | Moderate | High | Very High |
Comparison with PSU
| Property | PPSU | PSU |
|---|---|---|
| Impact Resistance | Much Higher | |
| Chemical Resistance | Better | |
| Sterilization Life | Longer | |
| Heat Resistance | Higher | |
| Cost | Higher |
Available Surface Finishes
Standard Finishes
- Natural Amber Finish
- Machined Finish
- Molded Finish
Functional Finishes
- Medical Grade Finish
- Polished Surface
- Precision Machined Finish
Specialty Grades
- Medical Grade PPSU
- FDA Food Grade PPSU
- Glass-Filled PPSU
- High-Flow PPSU
- USP Class VI PPSU
Frequently Asked Questions (FAQ)
What is PPSU?
PPSU (Polyphenylsulfone) is a high-performance thermoplastic known for exceptional toughness, sterilization resistance, chemical resistance, and high-temperature performance.
What is PPSU used for?
Typical applications include:
- Medical Devices
- Surgical Instruments
- Sterilization Equipment
- Food Processing Components
- Fluid Handling Systems
Is PPSU autoclavable?
Yes. PPSU can withstand thousands of steam sterilization cycles.
Is PPSU stronger than PSU?
PPSU offers significantly higher impact resistance and toughness while maintaining similar strength levels.
Can PPSU be machined?
Yes. PPSU provides excellent CNC machining performance and dimensional stability.
Why choose PPSU?
Because it combines:
- Exceptional Toughness
- Outstanding Sterilization Resistance
- Excellent Chemical Resistance
- High Temperature Capability
- Medical Compatibility
What is the difference between PPSU and PEEK?
PPSU provides better transparency and lower cost, while PEEK offers significantly higher structural strength and wear resistance.
Does GCNOV provide PPSU manufacturing services?
Yes. GCNOV provides:
- PPSU CNC Machining
- Injection Molding
- Medical Device Component Manufacturing
- Sterilizable Equipment Parts
- Prototype Development
- Low-Volume Production
- Mass Production
- Custom High-Performance Plastic Components