| About |
|---|
| Plexiglas® V920 is a General-purpose thermoplastic acrylic resin formulated for injection molding and extrusion applications. It is characterized by its very high melt flow. Plexiglas® V920 has excellent weatherability and optical properties allowing it to excel in applications requiring outdoor stability, high quality surface appearance and/or precision optics. Plexiglas® V920 is easy to process due to its exceptional thermal stability, extrusion melt strength, and excellent tool surface reproduction and release properties. Supplemental moldflow simulation data is available. It has excellent resistance to many chemicals including solutions of inorganic acids, alkalis and aliphatic hydrocarbons such as VM&P naphtha and heptane. Additionally, it is virtually unaffected by a wide range of commercial products including many beverages, foodstuffs, detergent solutions and cleaners.&& |
| Product Description | |
|---|---|
| Supplier | ROHM |
| Generic | PMMA |
| Material Status | Commercial: Active |
| Features | Weather resistance is good,Good Clarity,Good Dimensional Stability,Low contractility,Good color stability,No BPA,High scratch resistance,Heat Stabilized,HB |
| Availabilitys | North America |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.18 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 230℃，3.80kg | 8.0 | 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 | |||
| 23℃ | 16 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, annealed | 90.6 | ℃ | ASTM D648 |
| 0.45 MPa, annealed | 92.8 | ℃ | ASTM D648 |
| Vicat Softening Temp | |||
| — | 100 | ℃ | ASTM D1525 3 |
| — | 91.1 | ℃ | ASTM D1525 4 |
| Thermal conductivity coefficient | 0.19 | W/m/K | ASTM C177 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | HB | UL 94 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.490 | ASTM D542 | |
| Transmittance | |||
| 3180 µm | 92.0 | % | ASTM D1003 |
| Haze | |||
| 3180 µm | < 1.0 | % | ASTM D1003 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| ASTM Classification | PMMA 0121V4 | ASTM D788 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 3100 | MPa | ASTM D638 |
| tensile strength | |||
| yield | 68.9 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 5.0 | % | ASTM D638 |
| Bending modulus | 3100 | MPa | ASTM D790 |
| bending strength | |||
| yield | 103 | MPa | ASTM D790 |
| Rockwell hardness | |||
| M-level | 90 | ASTM D785 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 79 to 88 | °C | |
| Drying time | 4.0 | hr | |
| Recommended maximum moisture content | 0.10 | % | |
| Recommended injection volume | 50 | % | |
| Proposed maximum recycled material ratio | 20 | % | |
| Barrel rear temperature | 204 | °C | |
| Barrel middle temperature | 210 | °C | |
| Barrel front temperature | 216 | °C | |
| Nozzle temperature | 210 | °C | |
| Processing (melt) temperature | < 271 | °C | |
| Mold temperature | 66 to 85 | °C | |
| Injection speed | Fast | ||
| Back pressure | 0.689 | MPa | |
| Screw speed | 50 to 100 | rpm | |
| Screw length to diameter ratio | 15.0:1.0 to 20.0:1.0 | ||
| Screw compression ratio | 2.0:1.0 to 2.5:1.0 | ||
| Vent depth | 0.051 | mm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Annealing cycle: 4hrs @ 176°F |
| 3. Rate A (50°C/h), Loading 1 (10 N) |
| 4. Rate A (50°C/h), Loading 2 (50 N) |
| 5. ND @ 72°F |
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