CLAREX Optical Grade Cell-Cast Thin Acrylic
The base substrate for almost all of the other products we offer!
CLAREX Acrylic (aka PMMA or poly-methyl methacrylate) has unsurpassed optical quality and a wide range of customizable features. The batch cell-cast manufacturing process has been optimized to yield the highest quality cast Acrylic sheets available on the market. This same batch process allows for full customization of the material configuration in low volumes up to mass production.
Benefits
- Highly polished mold-sets yield incredibly smooth surfaces with roughness less than 0.02µ
- Low wavefront distortion
- High light transmission – 92% for clear sheets without anti-reflection coating
- Isotropic transmission
- No birefringence of double refraction – no retardation of polarized light
- The pure liquid monomer results in virtually no autofluorescence
- High long-path transmission
- High molecular weight – 2+ million
- 100% Visually Inspected for Defects
- Excellent weatherability and chemical resistance
- Machines and Laser Cuts Great
Applications
- LCD protective windows
- Camera and lens covers
- Sensor & light filters
- Architectural models
- Microfluidics substrate
- Prototyping
- and more
Thicknesses
- 0.2mm
- 0.25mm
- 0.3mm
- 0.35mm
- 0.4mm
- 0.5mm
- 0.6mm
- 0.7mm
- 0.8mm
- 1.0mm
- 1.2mm
- 1.5mm
- 2.0mm
- 2.5mm
- 3.0mm
- 3.5mm
- 4.0mm
- 4.5mm
- 5.0mm
- Custom
Size
- 400 x 550mm is standard small sheet
- 1000 x 1000mm is standard large sheet size
- Max size depends on several factors
- Please contact us to discuss standard and custom sheet size options.
Colors
- Many colors, including neutral density (smoke), are available. Colors are typically transparent, but translucent and opaque colors are also available.
- Colors available from 0.5mm thick and up.
- If we don’t already have the color you need in our portfolio, we offer color-matching service as well.
Coatings
- Optical Grade Hardcoat for scratch and chemical resistance
- Antibacterial hardcoat
- Anti-Reflection (AR) coatings
- Mirror coatings
- And more
Surfaces
- Nonglare textures can be molded in during the casting process (not a coating).
- Several different textures available with a range of gloss levels.
- Available one or both sides in any combination.
Special Formulations
- High Temperature
- UV Transmit (UVT)
- Added UV Block
- Low Moisture Absorption
Transmission Curves for Standard Clear Acrylic and Many Different Colors/Shades
Don’t see what you need? Don’t worry, we can color match your sample/spec as well!
Physical & Chemical Properties
| Property | Method | Unit | UNCOATED | with HARDCOAT |
|---|---|---|---|---|
| Specific Gravity | ASTM D-792 | 1.19 | 1.19 | |
| Optical | ||||
| Refractive Index | ASTM D-542 | 1.49 | 1.49 (1.54) | |
| Mechanical | ||||
| Elongation | ASTM D-638 | % | 5 | 5 |
| Tensile Rupture Strength | ASTM D-638 | kg/cm2 | 750 | 650 |
| Flexural Rupture Strength | ASTM D-790 | kg/cm2 | 1200 | 800 |
| Thermal | ||||
| Heat Distortion Temperature | °C | 110 | 110 | |
| Maxiumum Recommended continuous temperature | °C | 80 | 80 | |
| Available with higher temperature ratings upon request, 90-95 °C | ||||
| Durability | ||||
| Heat Resistance | 80ºC x 100hr | No Change | No Change | |
| Cold Resistance | -40ºC x 100hr | No Change | No Change | |
| Humidity Resistance | 60ºC x 90% x 100hr | No Change | No Change | |
| Thermal Cycle | -40ºC <> 80ºC (10 cycles) | No Change | No Change | |
| Electrical | ||||
| Surface Resistivity | w | 10^16 | 10^16 | |
| Chemical | ||||
| Methyl Alcohol (50%) | No Change | No Change | ||
| Ethyl Alcohol (50%) | No Change | No Change | ||
| Soap Aqua Solution | No Change | No Change | ||
| Toluene | Dissolved | No Change | ||
| Acetone | Dissolved | No Change | ||
| Benzene | Swollen | No Change | ||
| Ethylene Dichloride | Dissolved | No Change | ||
| Other | ||||
| Pencil Hardness | 2H | 6~8H | ||
| Adhesion | K-5400 | 100/100 | ||
| Flammability | ||||
| Fire Resistivity | UL standard | >=0.8mm Thickness | 94HB | 94HB |