Polyimide film HN

Description

1. Product Overview
Polyimide Film HN is a high-performance, thermally stable polymer film engineered for extreme operating environments. It is primarily used as electrical insulation and structural material in aerospace, automotive, and electronics manufacturing. The key value proposition lies in its exceptional thermal endurance (continuous use from -269°C to 400°C), high dielectric strength, and mechanical toughness. Strategically, it enables miniaturization and reliability in mission-critical systems, making it indispensable for next-generation flexible circuits, motor slot liners, and space-saving insulation architectures.

2. Key Specifications & Technical Characteristics

• Chemical composition: Aromatic polyimide (fully imidized, no thermoplastic fillers)

• Purity/grade: HN standard grade / UL 94 V-0 flame class

• Physical form: Rolled film

• Color: Translucent amber to deep amber

• Thickness range: 7.5 µm, 12.5 µm, 25 µm, 50 µm, 75 µm, 125 µm (custom ±5% tolerance)

• Tensile strength (MD): ≥ 230 MPa (ASTM D882)

• Elongation at break: ≥ 65%

• Dielectric strength: ≥ 7.5 kV (25 µm, 1 kHz)

• Thermal class: 220°C continuous (UL RTI), peak 400°C intermittent

• Moisture absorption: < 2.5% (24 hr immersion)

• Packaging options: Anti-static core rolls, vacuum-sealed moisture barrier bags, industrial spools (24″ core ID)

• Shelf life: 24 months from date of manufacture when stored at < 40°C / < 70% RH in original packaging

3. Core Industrial Applications

• Aerospace & defense: Wire and cable wraps, thermal blankets, and flexible printed circuits in avionics — outperforms PET or PEN films under rapid thermal cycling and vacuum outgassing (low total mass loss < 1%).

• Electric vehicles (EVs): Motor slot liners, busbar insulation, and battery cell separators — delivers superior dielectric strength and creep resistance compared to polyamide or epoxy-coated films, reducing short-circuit risk.

• Semiconductor & electronics: Substrates for flexible heaters, pressure sensors, and EMI shielding layers — maintains dimensional stability up to 400°C, enabling soldering and reflow processes without delamination.

• Industrial equipment: Compressor gaskets, high-temp label facestocks, and laser printer belts — longer service life than PTFE or PEEK films under continuous mechanical flexing and abrasive conditions.

Why better: HN film retains >85% of its mechanical properties after 10,000 hours at 200°C, whereas standard polyimide alternatives show accelerated embrittlement. Lower coefficient of thermal expansion (17 ppm/°C) matches copper, reducing stress in multilayer laminates.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025 certified with batch-level FTIR and thickness mapping; each roll includes a Certificate of Analysis.

• Supply reliability: Dual-source manufacturing (Asia and North America) with safety stock maintained in three regional hubs — average lead time 10 working days.

• Logistics capability: Dedicated export crating for moisture-sensitive rolls; FCL or LCL shipping with real-time track-and-trace.

• Price competitiveness: Tier-1 volume pricing without long-term exclusivity contracts — transparent index-based adjustment for polyamic acid raw materials.

• Sustainability: RoHS, REACH, and halogen-free compliant; reclaimable via pyrolysis energy recovery; zero PFAS content.

• Technical support: In-house applications engineers provide failure analysis, lamination guidance, and custom slitting to ±0.5 mm width tolerance. Full UL recognition file available upon request.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 1 roll per thickness grade (standard roll length: 500 linear meters).

• BULK order quantity: 20 metric tons (MT) per purchase order — qualifies for dedicated production scheduling and reduced per-kg pricing.

• Loading capacity (20 ft container): 18–22 MT depending on roll width (typical 520 mm width yields ~20 MT with void fill optimization).

• Incoterms supported: EXW, FOB, CIF (major global ports) — letters of credit (L/C) and net 30 terms for approved corporate accounts.