ACRYMID® TT70 by Roehm is poly(n-methyl methacrylimide) (PMMI) grade. It possesses excellent transmission & clarity, very high mechanical strength & rigidity and good weather resistance. It exhibits high stability of optical properties at long-lasting thermal load and outstanding heat deflection temperature under load. ACRYMID® TT70 can be processed using injection molding with standard 3-zone general purpose screws. It is suitable for applications involving maximum thermal loads such as lenses, light guides, lightning fixtures and covers.
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ACRYMID® TT70 properties
Flammability properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Flame Rating, UL 94 | 0.0 Visible After Login | Visible After Login | Visible After Login |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Elongation at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Modulus of Elasticity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength at Break | 0.0 Visible After Login | Visible After Login | Visible After Login |
Optical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Refractive Index | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Transmittance, Visible | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Volume Flow Rate (MVR) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Water Absorption | 0.0 Visible After Login | Visible After Login | Visible After Login |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Deflection Temperature at 0.46 MPa (66 psi) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Deflection Temperature at 1.8 MPa (264 psi) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Vicat Softening Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
ACRYMID® TT70 Processing Guidelines
Injection Molding Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Drying Temperature | Visible After Login | Visible After Login | |
| Drying Time | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Mold Temperature | Visible After Login | Visible After Login | |