Polycarbonate
Impact-resistant transparent thermoplastic for lenses and panels
Overview
Polycarbonate is a high-performance thermoplastic known for exceptional impact resistance and optical clarity. In automotive applications, polycarbonate has largely replaced glass in headlight and taillight lenses, offering design flexibility, weight savings, and superior impact resistance. The material's moldability allows complex lens geometries impossible with glass, enabling advanced lighting designs with integrated optics. UV-resistant coatings and hard-coat treatments protect against yellowing and scratching, ensuring long-term clarity. Beyond lighting, polycarbonate appears in instrument clusters, sunroof panels, and glazing applications where impact resistance is prioritized over scratch resistance. Polycarbonate's ability to be molded into complex shapes, combined with its light weight (approximately half that of glass) and shatter resistance, makes it ideal for safety-critical applications. Modern polycarbonate formulations offer excellent temperature resistance and can be metallized for decorative chrome-like finishes on trim pieces.
Automotive Applications
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Properties
Category
Type
Polycarbonate Thermoplastic
Available Colors
Available Forms
Key Properties
- Impact resistant
- Optical clarity
- Lightweight
- Moldable
- UV resistant with coating
Technical Specifications
Density
1.2 g/cm³
Temperature Resistance
-40°C to 130°C
Sustainability
Sustainability Rating
Polycarbonate is recyclable, though contamination and degradation during recycling limit applications. Chemical recycling methods are emerging.