| About |
|---|
| ACRYMID 813 compound is an amorphous and heat-resistant thermoplastic molding compound based on polymethyl methacrylimide (PMMI). Typical properties of ACRYMID® heat-resistant molding compounds are: high light transmission high heat resistance very high strength and rigidity good weather resistance The special properties of ACRYMID 813 compound are: high melt flow rate AMECA listed Application: Used for injection molding parts that involve a high degree of thermal stress.&& |
| Product Description | |
|---|---|
| Supplier | Evonik |
| Generic | PMMI |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Weather resistance is good,Good Clarity,High liquidity,High Heat Resistance,Amorphous |
| Availabilitys | North America,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.21 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 260℃，3.80kg | 16 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD | 0.80 to 0.90 | % | ASTM D955 |
| Water absorption rate | |||
| balance | < 0.30 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃，6.4mm | 13 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, annealed, 6.35 mm | 122 | ℃ | ASTM D648 |
| Vicat Softening Temp | 126 | ℃ | ASTM D1525 |
| Linear coefficient of thermal expansion | |||
| MD：0~100℃ | 7.7E-5 | 1/℃ | ASTM D696 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Transmittance | |||
| 3200 µm | 91.0 | % | ASTM D1003 |
| Haze | |||
| 3200 µm | < 1.0 | % | ASTM D1003 |
| Yellowness index | |||
| 3.20 mm | < 1.0 | YI | ASTM D1925 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| M-level | 97 | ASTM D785 | |
| Tensile modulus | 4100 | MPa | ASTM D638 |
| tensile strength | 90.0 | MPa | ASTM D638 |
| Tensile strain | |||
| yield | 2.0 to 4.0 | % | |
| fracture | 2.0 to 4.0 | % | |
| Bending modulus | 3800 | MPa | ASTM D790 |
| bending strength | 137 | MPa | ASTM D790 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 115 | °C | |
| Drying time | 2.0 to 3.0 | hr | |
| Barrel rear temperature | 250 to 280 | °C | |
| Barrel middle temperature | 250 to 280 | °C | |
| Barrel front temperature | 250 to 280 | °C | |
| Processing (melt) temperature | 250 to 280 | °C | |
| Mold temperature | 80 to 100 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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