Cleartech™ is a clear hard coated acrylic solution with a surface treatment that is applied to both the front and rear sides of the base material during the coating process.
By protecting both sides of the acrylic material, the risk of damage during mounting and assembly processes is significantly reduced. The benefits of this are, of course, fewer rejects and lower quality control costs.
Cleartech’s surface hardness (measured in pencil hardness) is among the best ever seen on plastics (6-8 H). Because of its durability, this solution is perfect for displays and devices used under challenging conditions daily such as displays on high-resolution ticketing machines or cameras that capture visible light.
Portable and handheld applications used in rough environments can also benefit from Cleartech’s scratch resistance and high optical performance.
If you are looking for a PMMA solution that has the same performance as Cleartech™ but in 1mm thickness, Hardtech™ is the perfect choice.
Hardtech™ has the same properties but only comes in 1 mm thickness.
Material can be cut and milled using high-speed routers and cutters suited for machining PMMA.
When laser cutting, pay attention to the fact that substrate and coating show different refractive indices, why proper adjustment of the laser beam is essential.
Ultrasonic welding is not possible.
When screen-printing, please note that the chemical properties of the coating are much different from PMMA, why it is recommended to test compatibility (adhesion) between the preferred screen ink system and substrate.
| Parameter | Test | PMMA (Substrate) | Coating |
|---|---|---|---|
| Refractive index | ISO 489 | 1.49 | 1.52 |
| Light transmittance - Total | ASTM D-1003 | 93% | 93% |
| Light transmittance - Haze | ASTM D-1003 | 0.5% | 0.5% |
| Pencil Hardness | - | N/A | 6-8H* |
| Mar resistance - Tabor abrader (100 times) | ISO 9352 | 40% Haze | 1.5% Haze |
| Parameter | Test | Result |
|---|---|---|
| Tensile strength - Rupture | ASTM D-638 | 64 MPa |
| Tensile strength - Modules of elasticity | ASTM D-638 | 3.2 x 10³ MPa |
| Tensile strength - Elongation at rupture | ASTM D-638 | 2.2 % |
| Flexural strength - Rupture | ISO 178 | 91 MPa |
| Flexural strength - Modules of elasticity | ISO 178 | 3.2 x 10³ MPa |
| Compressive strength - Yield | ISO 604 | 120 MPa |
| Compressive strength - Modules of elasticity | ISO 604 | 3.2 x 10³ MPa |
| Compressive strength - Impact Strength (Sharpy) | ISO 179/1FU | 17 kJ/m² |
| Compressive strength - Rockwell Hardness | ISO 2039-2 | 100 |
| Parameter | Test | Result |
|---|---|---|
| Temp. of deflection under load | ISO 75-2/A | 105 °C |
| Coefficient of thermal conductivity | ISO 11359 | 0.07 mm/m °C⁻¹ |
| Coefficient of thermal conductivity | ASTM D-177 | 0.21 W/m K |
| Specific Heat | - | 1.5 J/g °C |
| Parameter | Test | Result |
|---|---|---|
| Surface Resistivity (28 °C, 75% RH) | ASTM D-257 | >10¹⁶ Ohm |
| Volume resistivity | ASTM D-257 | >10¹⁶ Ohm-cm |
| Dielectric strength, short time test | ASTM D-149 | 20 Ohm-cm |
| Dielectric constant @ 1kHz | ASTM D-150 | 4 |
| Dielectric constant @ 1MHz | ASTM D-150 | 3 |
| Parameter: Immersion, 7 days at 25 °C according to ASTM D-543 | Result |
|---|---|
| Hydrochloric acid, HCl (10%) | No change |
| Sodium chloride, NaCl (10%) | No change |
| Sea water | No change |
| Sodium Hydroxide, NaOH (48%) | No change |
| Ethyl Alcohol (95%) | No change |
| Acetic acid (5%) | No change |
| Citric acid (10%) | No change |
| Mineral oil | No change |
| Olive oil | No change |
| n-Heptane | No change |
| Turpentine | No change |
| Isooctane | No change |
| Kerosene | No change |
| Acetone | No change |
| Parameter | Test | Result: PMMA | Result: Coating |
|---|---|---|---|
| Flammability (Burning rate) | ISO 1210 | 33 mm/min | N/A |
| UL 94 Rating | - | HB | N/A |
| Water absorption (weight gain, 24H immersion) | ISO 62, Method 1 | 0.3% | N/A |
| Soluble matter lost after immersion | - | 0.0% | 0.0% |
| Specific gravity | ISO 1183 | 1.19 g/cm³ | N/A |
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