| About |
|---|
| PLEXIGLAS® Heatresist hw55 clear is a copolymer based on methyl methacrylate (MMA) with comonomer constituents. Besides showing the familiar properties of standard PLEXIGLAS® molding compound, such as high light transmission, good flowability, high mechanical strength, surface hardness and abrasion resistance, as well as excellent weatherability, PLEXIGLAS® Heatresist hw55 clear offers the additional benefits of increased heat deflection temperature under load and improved resistance to stress cacking optimised inherent color, AMECA listing. Application: PLEXIGLAS® Heatresist hw55 clear is particularly suitable for injection molding of technical items. Examples: lighted keys, luminaire covers, fiber optics.&& |
| Product Description | |
|---|---|
| Supplier | ROHM |
| Generic | PMMA |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Weather resistance is good,Good liquidity,Good Hardness,Copolymer,High ESCR,Good coloring,HB |
| Availabilitys | Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.19 | g/cm³ | ISO 1183 |
| Melt Volume Rate | |||
| 230℃，3.8 kg | 1.20 | cm³/10min | ISO 1133 |
| Water absorption rate | ISO 62 | ||
| 23℃，24hr | 2.2 | % | ISO 62 |
| Equilibrium, 23 ℃, 50% RH | 0.60 | % | ISO 62 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 3600 | MPa | ISO 527-1-2 |
| tensile strength | |||
| fracture | 80.0 | MPa | ISO 527-2/5 |
| Tensile strain | |||
| fracture | 3.5 | % | ISO 527-2/5 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Unnotch Impact strength | |||
| 23℃ | 20 | kJ/m² | ISO 179/1eU |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 109 | ℃ | ISO 75-2/B |
| 1.8 MPa, unannealed | 106 | ℃ | ISO 75-2/A |
| Glass transition temperature | 122 | ℃ | ISO 11357-2 |
| Vicat Softening Temp | |||
| B50 | 119 | ℃ | ISO 306 |
| Linear coefficient of thermal expansion | |||
| MD：0~50℃ | 7.0E-5 | 1/℃ | ISO 11359-2 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 1.60 mm | HB | UL 94 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.510 | ISO 489 | |
| Transmittance | 90.0 | % | ISO 13468-2 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | < 109 | °C | |
| Drying time | 2.0 to 3.0 | hr | |
| Processing (melt) temperature | 220 to 250 | °C | |
| Mold temperature | 60 to 90 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. D65 |
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