What is the Difference Between Perspex and Polycarbonate?

Perspex and polycarbonate are two types of clear plastic sheets that have different properties and uses. Here are the main differences between them:

1. Impact Resistance: Perspex is more impact resistant than polycarbonate, being able to resist impact 17 times more than glass, while polycarbonate can resist impact 250 times more than glass.
2. Strength and Flexibility: Acrylic (Perspex) sheet is more rigid than polycarbonate sheeting, making it more likely to crack under stress. Polycarbonate is more flexible and bendable, especially in thinner grades.
3. Scratch and Fire Resistance: Perspex is less likely to scratch, but it is also less impact resistant than polycarbonate. Polycarbonate is class one fire rated, making it the ideal choice for situations where fire resistance is crucial, such as airports, train stations, and shopping centers.
4. Edge Clarity: The edges of Perspex or acrylic sheets can be polished back to restore clarity, making it ideal for the display industry. However, polycarbonate edges remain dull once cut and cannot be polished.
5. Price: Polycarbonate is generally more expensive than Perspex.
6. Color Selection: Perspex sheets are available in a wider range of colors, while polycarbonate sheets have a limited color selection.
7. ThermalFORMability: Acrylic (Perspex) can be heated and molded to shape, then heated again while retaining its quality appearance, unlike polycarbonate.

In summary, Perspex is more impact resistant, shinier, and has a wider range of colors, making it ideal for display cases and outdoor applications. On the other hand, polycarbonate is stronger, more flexible, and fire-resistant, making it suitable for highly demanding applications like bullet-resistant windows and riot shields.

Comparative Table: Perspex vs Polycarbonate

Here is a table comparing the differences between Perspex (acrylic) and polycarbonate:

Both Perspex and polycarbonate are synthetic materials that weigh less than half of what a comparable sized piece of glass weighs yet are much stronger than glass. They are both widely used as replacements for glass in various applications. However, their differences in strength, flexibility, and chemical resistance make them suitable for different applications.