Dafu

When transparency meets extreme heat resistance, Polyetherimide (PEI) film emerges as the go-to engineering plastic. Foshan Dafu New Material leverages decades of expertise to produce premium DFPEI film, bridging the gap between standard polymers and high-cost ceramics.

Unlike opaque high-temperature materials, Dafu’s PEI film offers a distinctive amber transparency​ while maintaining a Glass Transition Temperature (Tg) of 217°C​ and long-term service temperatures up to 170°C. This unique balance makes it indispensable in sectors where both visibility and thermal stability are non-negotiable.

Core Performance Advantages:

• Intrinsic Safety:​ Naturally halogen-free and inherently flame retardant. It produces low smoke and low toxicity upon combustion—critical for aviation and rail transit compliance.
• Mechanical Strength:​ Exhibits high modulus and excellent creep resistance. It remains tough and impact-resistant, outperforming brittle alternatives in high-stress environments.
• Hydrolysis Resistance:​ Stable in high-pressure steam, making it suitable for repeated autoclave sterilization cycles in medical settings.

Key Application Areas:

Aerospace & Defense

Utilized for aircraft wire harness insulation and interior decorative laminates. Its lightweight nature combined with high heat resistance ensures safety without adding bulk.

Electronics & Electrical

Serves as a robust substrate for high-end Flexible Printed Circuits (FPC) and motor slot insulation. Its dimensional stability under heat prevents warping during reflow soldering.

Medical Devices

Ideal for reusable surgical instrument covers and monitoring probe housings. It withstands repeated steam sterilization without clouding or degrading.

Industrial & Emerging Tech

Applied in high-performance speaker diaphragms (offering rigidity and dampening) and as a reliable carrier film in additive manufacturing.

Dafu Quality Assurance:

As a specialized manufacturer since 2009, Dafu provides PEI films in various thicknesses and surface finishes (polished/matte). Our products are engineered for precision in the most demanding applications.