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PES
Material Type
Engineering Plastics
Material Full Name
Polyethersulfone
Process Compatibility
Injection Molding, CNC Machining
Basic Properties
Property |
Parameter/Performance |
Remarks |
|---|---|---|
| Chemical Name | Polyethersulfone | Alternating ether (-O-) and sulfone (-SO₂-) linkages in backbone |
| Molecular Structure | Amorphous thermoplastic | Naturally amber, dark-colorable |
| Density | 1.37~1.40 g/cm³ | 5% heavier than PSU, 60% lighter than metals |
| Transparency | 88-90% light transmittance (3mm) | Medical grades reach 92% (rivaling PMMA) |
| Mechanical Properties | ||
| – Tensile Strength | 80-95 MPa | Superior creep resistance vs. PSU |
| – Impact Strength | 10-15 kJ/m² (notched Izod) | Remains tough at -100℃ |
| – Wear Resistance | μ=0.3-0.5 | Requires PTFE/graphite additives |
| Thermal Properties | ||
| – HDT (1.82MPa) | 200-210℃ | Highest long-term service temp among engineering plastics |
| – Service Temperature | -100℃~180℃ (short-term 200℃) | UL RTI 180℃ (electrical) |
| Chemical Properties | ||
| – Hydrolysis Resistance | Withstands 1000+ steam sterilization cycles (134℃) | Top choice for reusable medical devices |
| – Chemical Resistance | Resists acids/alkalis/alcohols; swells in ketones/halocarbons | Avoid acetone/chloroform |
Processing Characteristics
Drying Essential:
- 150℃ for 4-6 hours (moisture <0.02%)
- Moisture causes bubbles/splay marks
Melt Temperature:
- 340-380℃ (slight crosslinking >400℃)
Mold Temperature:
- 140-180℃ (higher temps reduce stress)
Special Requirements:
- Corrosion-resistant screws (withstand 400℃)
Common Application Areas
-
Medical: Heart valve frames, dental sterilization trays
-
Aerospace: Aircraft transparent partitions, engine wire harness sheaths
-
Food: Microwave-safe containers, juicer cups
-
Energy: Nuclear reactor control rod components, fuel cell bipolar plates
PES Modified Types
Type |
Characteristics |
Typical Applications |
|---|---|---|
| Standard PES | High clarity/ultra-high heat resistance | Surgical light covers, hemodialyzers |
| 30% Glass-Filled PES | Flexural strength >220 MPa | Aircraft engine sensor housings |
| Conductive PES | Carbon fiber (10²-10⁵ Ω·cm) | Semiconductor wafer carriers |
| Flame-Retardant PES | UL94 V0 (halogen-free, LOI 38%) | High-speed rail cable insulation |
| Food-Grade PES | FDA 21 CFR 177.2440 compliant | Baby bottles, transparent coffee machine parts |
Advantages & Disadvantages
Advantages |
Disadvantages |
|---|---|
| Unmatched heat resistance (180℃ long-term) | Extremely high melt viscosity (needs ultra-high pressure) |
| Outstanding radiation resistance (>500 kGy) | Very expensive (10-12× PC cost) |
| Inherent medical safety (BPA/plasticizer-free) | High processing energy (special equipment needed) |
Other Engineering Plastics Selection
POM Materials
PA Materials
PC Materials
PET Materials
PEEK Materials
FAQ Of PES Materials
Visit our FAQ center for more questions.
What are the most outstanding properties of PES plastic?
PES offers extremely high heat deflection temperature (220°C+), excellent clarity (88% light transmission), and superior chemical resistance, while meeting medical-grade biocompatibility standards (e.g., ISO 10993).
What are the key high-end applications of PES?
Primarily used in medical sterilization devices (e.g., surgical tools, dialysis filters), aerospace high-temperature components, and food-contact heat-resistant containers (e.g., baby bottles, coffee machine parts).
What are critical processing parameters for PES?
Requires pre-drying (140-160°C/4-6 hours), recommended injection temperature 340-380°C, mold temperature 120-160°C, and must avoid excessive shear stress to prevent degradation.