Polyetherimide (PEI)

Description

1. Product Overview
Polyetherimide (PEI) is an amorphous, high-performance thermoplastic polymer renowned for its exceptional thermal stability, mechanical strength, and inherent flame retardancy. Primarily used in precision engineering, aerospace, medical devices, and electronics, PEI serves as a direct replacement for metals and other engineering plastics in high-stress, high-temperature environments. Its strategic value lies in enabling lightweighting without sacrificing structural integrity, directly addressing global industrial demands for energy efficiency and regulatory compliance in mission-critical applications.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Polyetherimide resin (CAS No. 61128-46-9); unfilled or glass-fiber-reinforced (e.g., 10–30% GF) grades available

• Purity/Grade: Virgin industrial grade; meets UL 94 V-0 (down to 0.4 mm thickness); FDA-compliant grades for food/medical contact available upon request

• Physical Characteristics:

  • Form: Pellets (2.5–3.5 mm) or custom-machined shapes

  • Color: Amber-translucent to black (custom colors available)

  • Density: 1.27 – 1.51 g/cm³ (depending on reinforcement)

  • Melt Flow Index (MFI): 8–18 g/10 min (337°C/5 kg)

• Packaging Options: 25 kg moisture-barrier bags; 500 kg FIBCs; 1,000 kg wooden palletized crates with desiccant

• Shelf Life: 24 months when stored below 40°C in original sealed packaging (hygroscopic – requires pre-drying before processing)

3. Core Industrial Applications

• Aerospace & Defense: Interior cabin components, ducting, brackets, and electrical connectors – outperforms aluminum on weight (45% lighter) and PEEK on cost, while maintaining continuous use up to 170°C.

• Medical Technology: Sterilizable surgical instruments, trays, and dental tools – resists over 1,000 cycles of steam autoclave, EtO, and gamma radiation without degradation, unlike polycarbonate or ABS.

• Electronics & Semiconductor: High-voltage insulators, burn-in test sockets, and EMI shielding housings – delivers dielectric strength of 28 kV/mm and low outgassing (NASA low-outgassing certified grades).

• Automotive (EV/ICE): Throttle bodies, sensor housings, and transmission components – replaces brass and stainless steel, reducing assembly costs via injection molding and eliminating secondary machining.

4. Competitive Advantages

• Quality Consistency: ISO 9001:2025 certified production with batch-to-batch traceability; each lot certified for HDT (200°C at 1.82 MPa) and tensile strength (≥105 MPa).

• Supply Reliability: Dual-sourced manufacturing lines (Asia & Europe) with 98.5% on-time-in-full (OTIF) performance; safety stock held in three regional warehouses.

• Logistics Capability: Expedited LTL and full-container shipping with climate-controlled options; hazardous material certification not required.

• Price Competitiveness: 12–18% lower total landed cost vs. incumbent PEI suppliers (Sabic Ultem™ equivalents) for identical mechanical specs.

• Sustainability: 30% post-industrial recycled (PIR) compound available; all virgin material meets RoHS, REACH, and PFAS-free standards.

• Technical Support: Free pre-sale CAE simulation (FEA mold flow) and on-site drying/processing audit included for orders ≥20 MT.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 500 kg per grade and color

• Bulk (20 MT): Volume discount tier begins at 20 metric tons (full truckload equivalent)

• Loading Capacity (MT per container):

  • 20 ft dry container: 18 MT (max palletized)

  • 40 ft HC container: 24 MT (optimized bulk bags)

  • Flexitank not applicable; product is solid pellets