Products Description
PEI is a non-crystalline thermoplastic special engineering plastic. Its molecular main chain contains both rigid imide rings and flexible ether bonds. It is one of the few high-performance polymers that simultaneously possess ultra-high heat resistance, stable dielectric properties, and good processability.
The typical appearance of PEI is a transparent resin with a golden color. After being modified with glass fibers or carbon fibers, it becomes opaque. The Tg (glass transition temperature) is as high as 217℃, and the long-term continuous use temperature can reach 170℃. It can withstand short-term temperatures of 200℃ and easily withstand the 260℃ thermal shock of PCB lead-free reflow soldering.
Products Specification
| Product name | PEI/POLYETHERIMIDE |
| CAS NO | 61128-46-9 |
| ITEM NO | M649 |
| Appearance | Translucent amber |
| Density | 1.28 |
| Package | 100g/1kg/100kg etc. |
| Delivery | 5-8days |
| Storage | room temperature |
| MSDS/COA/TDS | Connect us |
|
Item |
Unit |
Specification |
|
Tensile Yield Strength |
MPa |
≥110 |
|
Tensile Modulus |
GPa |
≥3.0 |
|
Elongation at Break |
% |
≥10 |
|
Charpy Notched Impact Strength |
kJ/m² |
≥4.0 |
|
Flexural Strength |
MPa |
≥150 |
|
Flexural Modulus |
GPa |
≥3.0 |
|
Rockwell Hardness |
M scale |
≥100 |
|
Glass Transition Temperature (Tg) |
℃ |
217 |
|
Linear Thermal Expansion Coefficient |
10⁻⁶/K |
≤65 |
|
Continuous Use Temperature |
℃ |
170 |
|
Heat Deflection Temperature (1.8 MPa) |
℃ |
≥200 |
|
Water Absorption (23℃, 24h in water) |
% |
≤0.4 |
Products Application
1. Aerospace field: Manufacturing of aircraft and rocket components, such as steering wheels, air and fuel valves, interior cladding parts, commercial airline food tray containers and semi-structural components.
2. Automotive field: Engine parts, fuel injection systems, high-temperature connectors, high-power lamps and indicator lights, sensors, etc.
Electrical and electronic field: Electronic components, connectors, insulators, circuit boards, coils, flexible circuits, reflectors, high-precision optical fiber components, fiber optic connectors, optical assemblies for optical transceiver modules, etc.
3. Optical field: Transparent windows, sensor covers, optical devices, etc.
4. Medical device field: Medical equipment including stopcocks, instrument trays, sterilization trays, pipettes, dental equipment; and medical device parts such as bone implants, surgical instrument handles, trays, clamps, prostheses, medical lamp reflectors, etc.
5. Household goods field: Microwave bowls, cookware, ovenware, food trays, steam cookers, etc.
6. Other fields: Manifolds, containers and accessories for chemical laboratory equipment and pharmaceutical processing equipment, as well as vacuum pump impellers, ground-glass joints for distillers, etc.
FAQ
Q: How to store PEI?
A: Keep sealed in cool, dry and ventilated warehouse, avoid moisture, light and heat sources. Prevent long-term exposure to humid air.
Q: Could PEI be sterilized and used for medical applications?
A: Yes. It can withstand repeated autoclaving, EO and gamma sterilization. Compliant grades have biocompatibility and are widely used in medical devices.
Q: Is PEI flame retardant inherently? Do we need extra flame retardant?
A: PEI is inherently flame retardant, reaches UL94 V-0 without extra flame retardant, low smoke and low toxicity, ideal for aircraft interior.
Q: Why must PEI pellets be dried before processing?
A: PEI absorbs moisture from air. Moisture will cause silver streaks, bubbles and voids during high-temperature injection or extrusion. It is recommended to dry at about 150℃ for over 4 hours before processing.
Q: How about the chemical resistance of PEI? What solvents attack it?
A: It resists alcohols, hydrocarbons, weak acids, weak alkalis and oils. It is not resistant to halogenated hydrocarbons and some strong polar solvents, avoid long-term contact with dichloromethane and similar solvents.
Why Choose Zhengzhou Megma Chemical Co., Ltd.?
Quality at a Fair Price – High-quality chemicals delivered at reasonable prices.
Timely Delivery – Prompt order processing and shipment, with complete customs documentation tailored to each country's export policies.
Flexible & Secure Payment – Agile and reliable payment solutions you can trust.
Full Quality Commitment – Should any quality issue arise, we take full responsibility.
Market Insights – Price trend updates to keep you informed and ahead in sales.
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