Lightweight: Has a low density, only about half that of glass, which reduces transportation, handling, and installation costs, and places less load on supporting structures.

Good Weather Resistance: Maintains stable physical properties across a wide temperature range from -40°C to 120°C (and even short-term higher), without becoming brittle. It exhibits good long-term anti-aging performance for outdoor applications.

Flame Retardancy: Has a high ignition point and is self-extinguishing upon removal of a flame. It does not produce toxic gases when burning. Its flame retardancy rating can reach Class B1, making it a flame-retardant engineering plastic.

Industry & Electronics：

Utilizing flame retardancy (some grades reaching V0 rating) and electrical insulation.

Electronics: Mobile phone cases, laptop shells, water dispenser bottles (PC is one of the few plastics approved for food contact), electricity meter boxes.

Industrial Equipment: 

Machine safety guards, soundproof barriers, riot shields, helmet visors (police riot shields, motorcycle helmet visors).

 Medical & Security：

Medical Devices: Due to its transparency and radiation resistance (suitable for high-temperature sterilization), PC is used for hemodialyzer shells, high-pressure syringes, surgical face shields, etc.

Security: Laminated layers in bulletproof glass, bank counter bulletproof barriers.

Emerging Application Areas：

Photovoltaic / New Energy: Backsheets or front sheets for flexible solar panels (utilizing light transmission and weather resistance).

Semiconductors: Wafer transport boxes, electronic component trays (requiring low outgassing and anti-static properties).

Q: What is the lifespan of a PC sheet?

A: The lifespan is primarily determined by the quality of its co-extruded UV protective layer. High-quality PC sheets come with a UV-blocking coating on one or both sides.

Sheets with a 10-year warranty typically last 10-15 years or more before noticeable yellowing or brittleness occurs.

Sheets with a 5-year warranty have a shorter expected lifespan.

Unprotected PC sheet will degrade quickly (yellow and become brittle) under direct UV exposure.

Q: Is Polycarbonate fire-resistant?
A: Polycarbonate is inherently a self-extinguishing material. Standard PC sheets typically carry a UL94 Flammability Rating of V-2, and specific grades can achieve a higher V-0 rating. It will melt and deform under extreme heat but does not support combustion easily and will stop burning once the flame source is removed. Always check the manufacturer's specifications for the exact fire rating.

Q: Where are PC sheets commonly used?
A: Applications are vast and include:

Architectural Glazing: Skylights, roof lights, curtain walls, walkways.

Greenhouses & Agricultural Buildings: Provides excellent diffused light and insulation.

Noise Barriers: Along highways and railways.

Security & Safety: Security windows, bank teller screens, police riot shields, machine guards.

Signage & Displays: Lightbox panels, protective covers.

Retail & Residential: Canopies, patio covers, garage doors, partitions.

3. Installation & Maintenance

Q: What are the key considerations for installing PC sheets?
A: Proper installation is critical to prevent damage and leakage.

Correct Side Out: The side with the UV-protective coating must face the sun. The protective film is usually printed with this information (e.g., "UV side" or "This side out").

Thermal Expansion/Contraction: PC expands and contracts significantly with temperature changes. You must:

Use oversized drill holes.

Use specialty EPDM or neoprene washer-headed screws.

Never over-tighten screws.

Sealants: Use only neutral cure silicone sealants (e.g., Dow Corning 795). NEVER use acrylic, ammonia-based, or solvent-based sealants as they cause chemical stress cracking and will destroy the sheet.

Bending: Sheets can be cold-curved only along the direction of the flutes (for multi-wall) or lengthwise. Do not bend across the flutes. The minimum bending radius is typically 150-200 times the sheet thickness.