CLAREX Hard-Coated Optical Grade Cell-Cast Acrylic Sheets (RH)
Hard-coating adds scratch and chemical-resistance.
The CLAREX hard-coat can be added to the surface of the sheets for increased scratch and chemical resistance, as well as for a base layer for optical coatings. But this is not your typical abrasion-resistant coating. The factory has developed a unique process for applying the coating, which maintains the optical grade properties of the acrylic sheets, as well as the ability to apply the hard coat to their non-glare textured surfaces without affecting the surface texture properties. Say goodbye to the surface defects typical of flow/dip/roll coated acrylic sheets…the CLAREX hard-coat is truly optical grade. The hard coat is acrylic-based, outdoor (UV) stable, and will not delaminate.
Benefits of Hard-Coated Acrylic Sheets:
- Scratch resistance improved from 2H to 6–8H pencil hardness
- Enhanced chemical resistance
- Excellent machinability and laser-cutting performance
- Maintains same optical-grade properties as uncoated CLAREX sheets:
- Low wavefront distortion
- High light transmission – 92% for clear sheets without anti-reflective coating
- Isotropic transmission
- No birefringence of double refraction – no retardation of polarized light
- Virtually no autofluorescence (due to pure liquid monomer)
- High long-path transmission
- High molecular weight (2+ million)
- 100% visually inspected for defects
- Ideal base substrate for adding optical coatings
- Need even more scratch resistance? See our Super Hard-Coat option
- If we don’t already have the color you need, color-matching is available
Applications
- LCD protective windows
- Camera and lens covers
- Sensor and light filters
- Prototyping
- Substrate for optical coatings
- and more
Thickness Options
- 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 Options
- Standard small sheet: 400 × 550 mm
- Standard large sheet: 1000 × 1000 mm
- Custom sizes: Maximum dimensions depend on application—contact us to discuss options
Customization
Custom sheets & parts to meet the needs of your applications.
Build your own sheets. Do you have a unique design requirement that cannot be met with off-the-shelf UV filter sheet materials? CLAREX acrylic can be fully customized and produced from low-volume runs to mass production. Select thickness, formulation, additives, pigments, textures, surface coatings, and optical coatings to create thin acrylic sheets tailored to your application.
Typical lead time is 4–8 weeks. Finished parts and assemblies can also be fabricated to specification.
PRODUCT SPECS
Physical & Chemical Properties of Hard-Coated Acrylic
| PROPERTY | METHOD | UNIT | UNCOATED | with HARD COAT |
|---|---|---|---|---|
| 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 | 108 | 110 | |
| Maximum 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 | >6H | ||
| Adhesion | K-5400 | 100/100 | ||
| FLAMMABILITY | ||||
| Fire Resistivity | UL standard | >=0.8mm Thickness | 94HB | 94HB |
Ready to Get Started with Hard-Coated Acrylic Sheets?
Whether you need large-sized standard sheets, custom dimensions, or single- or double-sided anti-reflective coatings, our team can help configure TechPC-AR polycarbonate to meet your exact optical, durability, and fabrication requirements.