| About |
|---|
| Plexiglas® HT121 is a thermoplastic acrylic resin formulated for injection molding applications. This grade has the highest heat resistance of all the Plexiglas® grades. Plexiglas® HT121 has excellent weatherability and optical properties allowing it to excel in applications requiring outdoor stability, high quality surface appearance and/or precision optics. 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,High Heat Resistance,No BPA,High scratch resistance,Heat Stabilized,HB |
| Availabilitys | North America |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.19 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 230℃，3.80kg | 2.6 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD | 0.20 to 0.60 | % | ASTM D955 |
| Water absorption rate | |||
| 24hr | 0.40 | % | 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 | 108 | ℃ | ASTM D648 |
| 0.45 MPa, annealed | 113 | ℃ | ASTM D648 |
| Vicat Softening Temp | |||
| — | 119 | ℃ | ASTM D1525 3 |
| — | 116 | ℃ | 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 0141V2 | ASTM D788 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 3280 | MPa | ASTM D638 |
| tensile strength | |||
| fracture | 70.3 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 3.0 | % | ASTM D638 |
| Bending modulus | 3280 | MPa | ASTM D790 |
| bending strength | |||
| yield | 105 | MPa | ASTM D790 |
| Rockwell hardness | |||
| M-level | 99 | ASTM D785 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Conventional Deflection |
| 3. Annealing cycle: 4hrs @ 221°F |
| 4. Rate A (50°C/h), Loading 1 (10 N) |
| 5. Rate A (50°C/h), Loading 2 (50 N) |
| 6. ND @ 72°F |
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