| About |
|---|
| General purpose grade of PMMA is largely divided into injection and extrusion purpose. Various pellet type of grades fit for the properties of customer products are available.&& |
| Product Description | |
|---|---|
| Generic | PMMA |
| Material Status | Commercial: Active |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.18 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 230℃，3.80kg | 16 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD | 0.20 to 0.60 | % | ASTM D955 |
| Water absorption rate | |||
| 24hr | 0.30 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | 15 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 84.0 | ℃ | ASTM D648 |
| Vicat Softening Temp | 104 | ℃ | ASTM D1525 2 |
| Linear coefficient of thermal expansion | |||
| MD | 6.0E-5 | 1/℃ | ASTM D696 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.490 | ASTM D542 | |
| Transmittance | |||
| 3000 µm | 92.0 | % | ASTM D1003 |
| Haze | |||
| 3000 µm | 0.50 | % | ASTM D1003 |
| Yellowness index | |||
| 3.00 mm | 0.40 | YI | ASTM D1925 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| yield | 64.7 | MPa | ASTM D638 |
| Tensile strain | |||
| yield | 10 | % | ASTM D638 |
| Bending modulus | 3300 | MPa | ASTM D790 |
| bending strength | |||
| yield | 128 | MPa | ASTM D790 |
| Rockwell hardness | |||
| M-level | 94 | ASTM D785 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 70 to 80 | °C | |
| Drying time | 4.0 to 6.0 | hr | |
| Recommended maximum moisture content | 0.10 | % | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Loading 1 (10 N) |
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