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PC plastic Sheet

2025-09-28 16:27
1. What is Polycarbonate (PC) Plastic Sheet?
Polycarbonate (PC) plastic sheet is a transparent, amorphous thermoplastic engineering material derived from polycarbonate resin, typically defined as sheets with a thickness exceeding 0.25mm in the plastics industry . Characterized by its CO₃ functional groups in the molecular chain, it stands out as the only general engineering plastic with exceptional optical clarity . Manufactured primarily through co-extrusion technology, many grades feature an additional UV-resistant coating to enhance weatherability .
2. Core Performance Advantages
Mechanical Strength
  • Extreme Impact Resistance: Up to 250 times stronger than glass and 30 times tougher than acrylic of the same thickness; it remains flexible even at sub-zero temperatures and can withstand a 3kg hammer drop from 2 meters without cracking, earning it the nickname "unbreakable glass" .

  • Lightweight: Approximately half the weight of standard glass, reducing structural load and simplifying transportation and installation .

  • Dimensional Stability: Minimal creep and low shrinkage rate ensure consistent performance over long-term use .

Optical & Thermal Properties
  • High Transparency: Light transmission rates reach up to 89% (comparable to glass), with only 6% loss after 10 years of outdoor exposure—far superior to PVC’s 15-20% loss .

  • Broad Temperature Tolerance: Maintains stability from -40℃ to 125℃ (some grades up to 135℃), resisting cold brittleness and high-temperature softening .

  • Thermal Insulation: Thermal conductivity is 7-25% lower than glass, optimizing energy efficiency in applications like greenhouses .

Safety & Durability
  • Flame Retardancy: Classified as fire-resistant (Grade B1 per GB8624), it self-extinguishes without releasing toxic fumes .

  • Weather Resistance: UV-stabilized grades block 99% of harmful UV rays, preventing yellowing or fogging even in harsh climates .

  • Chemical Resistance: Withstands weak acids and neutral oils, though it should be avoided in strong acid/alkali environments .

PC plastic Sheet

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