| About |
|---|
| XT is one of the trade names of Polycasa for extruded acrylic (polymethylmethacrylate PMMA) in the form of large dimensional sheets. Offering solutions to both indoor and outdoor applications, Polycasa XT is available in clear and opal white standard, and in a wide range of colours and designs. Sheets are produced and tested according to DIN EN ISO 7823-2. CHARACTERISTICS Good optical properties — brilliant transparency showing excellent colour. High-quality surfaces — very good weathering and ageing resistance. Can be used in contact with foodstuffs — meets all current European food control legislation. Does not contain any toxic materials or heavy metals which may cause environmental damage or health risks. Easy to recycle. High impact grades Polycasa XT610, XT620 and XT630 have outstanding mechanical properties and excellent impact strength. APPLICATIONS Construction components: light domes, partition walls, glazing, roofing, caravan windows. Lighting: prismatic control lenses, opal diffusers. Engineering components: housings, machine covers. Advertising and decoration: letters, shop fittings, panels, Point Of Purchase displays. Other applications: containers, lettering templates, solariums UVT (UV-transmitting grade).&& |
| Product Description | |
|---|---|
| Generic | PMMA |
| Material Status | Commercial: Active |
| Features | Weather resistance is good,Good surface appearance,High impact resistance,Renewable resources,Optical performance,Food contact compliance,Nontoxicity |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.16 | g/cm³ | ISO 1183 |
| Shrinkage rate | 0.60 to 0.90 | % | |
| Water absorption rate | |||
| 23℃，24hr | 0.30 | % | ISO 62 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | 4.0 | kJ/m² | ISO 179 |
| Charpy Unnotch Impact strength | 35 | kJ/m² | ISO 179 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Vicat Softening Temp | |||
| B50 | 102 | ℃ | ISO 306 |
| Linear coefficient of thermal expansion | |||
| MD | 1.0E-4 | 1/℃ | DIN 53752 |
| specific heat | 1500 | J/kg/℃ | ISO 11357 |
| Thermal conductivity coefficient | 0.18 | W/m/K | DIN 52612 |
| Maximum operating temperature | |||
| continuous use | 65 | ℃ | |
| short term use | 80 | ℃ |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Dielectric strength | 30 | kV/mm | IEC 60243 |
| Relative permittivity | |||
| 1 MHz | 2.90 | DIN 53483 | |
| Dissipation factor | |||
| 1 MHz | 0.030 | DIN 53483 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Transmittance | |||
| 3000 µm | 91.0 | % | ISO 13468-1 |
| Refractive index | 1.4920 | ISO 489 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| Degradation Temperature | > 280 | ℃ | |
| Forming temperature | |||
| air pressure | 130 to 150 | ℃ | |
| vacuum | 140 to 170 | ℃ |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Ball hardness | 135 | MPa | ISO 2039-1 |
| Tensile modulus | 2100 | MPa | ISO 527-2 |
| tensile strength | 50.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| fracture | 25 | % | ISO 527-2 |
| Bending modulus | 2100 | MPa | ISO 178 |
| bending strength | 85.0 | MPa | ISO 178 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 50x50x4mm³ (Method 1) |
| 3. Pre treatment 16h at 80°C |
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