SL 7811 stereolithography material is a white, low viscosity stable liquid that produces strong white models and prototypes with good surface finish and detail, an ABS-like appearance.
PROPERTIES
| MEASUREMENT | CONDITION | VALUE |
| Appearance | White liquid | |
| Density | @ 25°C (77°F) | 1.11 g/cm3 |
| Viscosity | @ 28°C (82°F) | 240 cps |
| Viscosity | @ 30°C (86°F) | 210 cps |
| Penetration depth (Dp) | 5.25 mils | |
| Critical exposure (Ec) | 10.97 mJ/cm2 | |
| Part building layer thickness* | 0.10mm (0.004 in.) |
Post-Cured Material
| MEASUREMENT | TEST METHOD | VALUE 90-minute UV post-cure |
VALUE 90-minute UV + 2 hours @ 80°C(176°F) thermal postcure |
| Hardness, Shore D | ASTM D-2240 | 86 | 86 |
| Flexural modulus | ASTM D-790 | 1,500-2,200 MPa (220-320 ksi) |
1,500-2,000 MPa (220-2900 ksi) |
| Flexural strength | ASTM D-790 | 35-54 MPa
(5,000-7,800 psi) |
33-52 MPa
(4,800-7,500 psi) |
| Tensile modulus | ASTM D-638 | 1,500-2,000 MPa (220-290 ksi) |
1,500-2,000 MPa (220-290 ksi) |
| Tensile strength | ASTM D-638 | 34-42 MPa (4,900-6,000 psi) |
34-40 MPa (4,900-5,800 psi) |
| Elongation at break | ASTM D-638 | 15-30% | 15-30% |
| Impact strength, notched Izod | ASTM D-256 | J/m (0.78-1.10 ft.-lb./in.) |
J/m (0.80-1.21 ft.-lb./in.) |
| Heat deflection temperature | ASTM D-648 @ 66 psi @ 264 psi |
47°C (117°F) –°C (–°F) |
46°C (115°F) –°C (—°F) |
| Glass transition, Tg | DMA, E” peak | 63°C (145°F) | n/a |
| Coefficient of thermal
expansion |
TMA (T<Tg) TMA (T>Tg) | 92 x 10-6/°C 207 x 10-6/°C |
n/a |
| Cured Density | 1.15g/cm3 | n/a |