Lexan vs. Plexiglass

Attribute	Lexan	Plexiglass
Material	Polycarbonate	Acrylic
Transparency	High	High
Impact Resistance	Very high	Lower than Lexan
Flexibility	Less flexible	More flexible
Scratch Resistance	High	Lower than Lexan
UV Resistance	High	Lower than Lexan
Chemical Resistance	High	Lower than Lexan
Cost	Higher than Plexiglass	Lower than Lexan

Introduction

When it comes to choosing the right material for various applications, it is important to consider the specific attributes and characteristics of each option. In the realm of transparent plastics, two popular choices are Lexan and Plexiglass. Both materials have their own unique features and benefits, making them suitable for different purposes. In this article, we will explore and compare the attributes of Lexan and Plexiglass, shedding light on their similarities and differences.

1. Composition and Manufacturing

Lexan, also known as polycarbonate, is a thermoplastic polymer that is derived from bisphenol A (BPA). It is produced through a process called polymerization, where BPA molecules are linked together to form a long chain polymer. On the other hand, Plexiglass, also known as acrylic, is made from polymethyl methacrylate (PMMA). PMMA is synthesized through a process called bulk polymerization, where methyl methacrylate monomers are polymerized to form a solid material.

While both Lexan and Plexiglass are transparent plastics, their composition and manufacturing processes result in different properties. Lexan tends to be more impact-resistant and flexible compared to Plexiglass, making it suitable for applications that require durability and strength. Plexiglass, on the other hand, offers better optical clarity and is easier to shape and mold, making it ideal for applications that prioritize aesthetics and design flexibility.

2. Strength and Durability

One of the key attributes to consider when comparing Lexan and Plexiglass is their strength and durability. Lexan is known for its exceptional impact resistance, making it virtually unbreakable. It can withstand high levels of force without shattering, making it a popular choice for applications that require protection against impact, such as safety glasses, riot shields, and bulletproof windows.

Plexiglass, on the other hand, is not as impact-resistant as Lexan. It is more prone to cracking and shattering under high impact. However, Plexiglass offers better resistance to UV radiation and weathering compared to Lexan. It is less likely to yellow or become brittle over time when exposed to sunlight, making it a preferred choice for outdoor applications such as signage, skylights, and greenhouse panels.

3. Optical Clarity and Transparency

When it comes to optical clarity and transparency, Plexiglass has the advantage over Lexan. Plexiglass offers excellent light transmission, allowing up to 92% of visible light to pass through. This makes it an ideal choice for applications that require maximum clarity and transparency, such as display cases, aquariums, and optical lenses.

Lexan, on the other hand, has slightly lower light transmission compared to Plexiglass. While it still provides good visibility, it may not be as crystal clear as Plexiglass. However, Lexan compensates for this with its superior impact resistance and durability, making it a preferred choice for applications where strength and protection are paramount, such as safety barriers and machine guards.

4. Workability and Versatility

Another important aspect to consider is the workability and versatility of Lexan and Plexiglass. Plexiglass is easier to shape, cut, and mold compared to Lexan. It can be easily machined, drilled, and polished, allowing for greater design flexibility. This makes Plexiglass a popular choice for applications that require intricate shapes and custom designs, such as architectural installations, decorative items, and artistic displays.

Lexan, on the other hand, is more difficult to work with due to its higher impact resistance and flexibility. It requires specialized tools and techniques for cutting and shaping. However, Lexan can still be thermoformed and fabricated, albeit with more effort. Its strength and durability make it suitable for applications that require structural integrity and protection, such as machine components, automotive parts, and aircraft windows.

5. Cost and Availability

Cost and availability are also important factors to consider when choosing between Lexan and Plexiglass. Plexiglass is generally more affordable compared to Lexan, making it a cost-effective choice for many applications. It is widely available in various thicknesses and sizes, making it easily accessible for both small-scale and large-scale projects.

Lexan, on the other hand, tends to be more expensive due to its superior impact resistance and durability. It is often used in specialized applications where its unique properties are required. However, the availability of Lexan may be more limited compared to Plexiglass, especially in certain regions or for specific thicknesses and sizes.

Conclusion

In conclusion, both Lexan and Plexiglass have their own distinct attributes and advantages. Lexan offers superior impact resistance and durability, making it suitable for applications that require strength and protection. Plexiglass, on the other hand, provides better optical clarity and workability, making it ideal for applications that prioritize aesthetics and design flexibility.

When choosing between Lexan and Plexiglass, it is important to consider the specific requirements of your application and weigh the pros and cons of each material. Whether you need a material that can withstand high impact or one that offers maximum transparency, both Lexan and Plexiglass can be excellent choices depending on your needs.