| About |
|---|
| Description PMMA Transparent Yellow compound Product Applications Lighting Fixture, Lenses, Automotive instrument panel & Industrial Application Benefits High Transmittance & High heat resistance&& |
| Product Description | |
|---|---|
| Generic | PMMA |
| Material Status | Commercial: Active |
| Features | Excellent Processability,Moderate liquidity,Copolymer,Heat Stabilized |
| Availabilitys | North America |
| 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 | 4.0 | g/10min | ASTM D1238 |
| Shrinkage rate | ASTM D955 | ||
| MD | 0.30 | % | ASTM D955 |
| TD | 0.30 | % | ASTM D955 |
| Water absorption rate | |||
| 23℃，24hr | 0.30 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃ | 25 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 102 | ℃ | ASTM D648 |
| Vicat Softening Temp | 109 | ℃ | ASTM D1525 |
| Linear coefficient of thermal expansion | |||
| MD | 7.0E-5 | 1/℃ | ASTM D696 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+16 | ohms | IEC 60093 |
| Volume resistivity | 1.0E+15 | ohms·cm | IEC 60093 |
| Dielectric strength | 20 | kV/mm | IEC 60243-1 |
| Dielectric constant | |||
| 60 Hz | 3.10 | ASTM D150 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.490 | ASTM D542 | |
| Transmittance | 91.0 | % | ASTM D1003 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| M-level | 100 | ASTM D785 | |
| Tensile modulus | 3400 | MPa | ASTM D638 |
| tensile strength | 70.0 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 10 | % | ASTM D638 |
| Bending modulus | 3200 | MPa | ASTM D790 |
| bending strength | 120 | MPa | ASTM D790 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature – vacuum dryer | 90 | °C | |
| Drying time | 4.0 to 6.0 | hr | |
| Barrel rear temperature | 240 to 250 | °C | |
| Barrel middle temperature | 250 to 260 | °C | |
| Barrel front temperature | 260 to 270 | °C | |
| Mold temperature | 60 to 85 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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