Material Knowledge
| Acrylic (PMMA) |
PS | PC (Optical Grade) |
NAS | Polyolefin (Zeonex) |
Arton F | Optores (OZ1000-1100) |
Optores (OZ1310-1330) |
||
| Optics | Spectral Passing Band (nm) | 390-1600 | 360-1600 | 395-1600 | 300-1600 | 390-? | 390-? | 410-? | |
| Refractive Index @ 589nm @25oC |
1.491 | 1.590 | 1.587 | 1.563 | 1.525 | 1.51 | 1.4995-1.5025 | 1.5059-1.5096 | |
| Abbe Value | 57.4 | 30.9 | 29.9 | 33.5 | 56.3 | 57 | 57-56 | 54-52 | |
| Transmittance (%) Thickness 3.2mm |
92 | 92 | 90 | 90 | 91 | 92 | 92 | 92 | |
| Haze (%) Thickness 3.2mm |
1.3 | 1.5(?) | 1.7(?) | 1.5(?) | 1.5(%) | 1.5 | 1(?) | 1(?) | |
| Physical Properties | Specific Gravity | 1.19 | 1.06 | 1.20 | 1.09 | 1.01 | 1.08 | 1.16 | 1.19 |
| Max. Service Temperature (C) |
90 | 80 | 120 | 85 | 123 | 171 | 95-100(?) | 80-100(?) | |
| Linear CTE | 6.8x10-5 | 7x10-5 | 6.6x10-5 | 7x10-5 | 7x10-5 | 6.1 | 7 | 7 | |
| Abrasion Resistance (1-10) | 10 | 4 | 2 | 6 | >11 | ? | ? | ? | |
| Izod Impact Strength 1/4" notched |
1 | 1(?) | 12 | 1.6(?) | 3.2(?) | 2 | ? | ? | |
| Environment | dN/dT(x10-6) | -105 | -104 | -107 | -110 | -130 | -35 (?) | -100 | -100 |
| Sensitivity to Humidity Water absorption (%) 23C, 1 week | High 2.0 |
Low | Low 0.4 |
Mid | Low | Low 0.4 |
Low 1 |
Low 1 |
|
| Manufacture | Process- ability | Excellent | Good | Poor | Excellent | Good | TBD | TBD | TBD |
| Birefringence | Very Good | Fair | Poor | Good | Good | Good | 20% better than PMMA | Excellent | |
| Chemical Properties | Resistance to Methanol | limited | ? | limited | ? | ? | Good | ? | ? |