What is the Difference Between Polycarbonate and Plexiglass?

Polycarbonate and Plexiglass (also known as acrylic) are both transparent plastic materials with different properties and applications. Here are the main differences between the two:

• Impact Resistance: Polycarbonate is about 250 times more impact resistant than glass, while acrylic (Plexiglass) is about 10 times more impact resistant than glass. Polycarbonate offers more resilience, making it ideal for highly demanding applications like bullet-resistant windows.
• Scratch Resistance: Acrylic is typically more scratch resistant than polycarbonate, but minor scratches cannot be polished away. Polycarbonate is easier to scratch than acrylic, and scratches are difficult to remove.
• Appearance: Acrylic has a glossier, water-clear appearance compared to polycarbonate. Acrylic is also inherently UV resistant, making it a good option for outdoor applications.
• Weight: Both acrylic and polycarbonate weigh about half of what comparably sized glass weighs by volume.
• Cost: Acrylic is generally less expensive than polycarbonate, but different coating and grade options may alter the price of each material.

When to use polycarbonate or acrylic depends on the specific application. Acrylic is preferred when optical clarity, UV resistance, or a specific size or shape is required because it is easily formed without impacting its strength. Polycarbonate is preferred for applications that require high impact resistance, such as bullet-resistant windows or machine guards.

Comparative Table: Polycarbonate vs Plexiglass

Here is a table comparing the differences between polycarbonate and plexiglass:

Both polycarbonate and plexiglass are lightweight alternatives to glass, with polycarbonate being a more flexible material with higher impact resistance. However, plexiglass is less expensive and more often used for display cases and outdoor applications due to its weather resistance.