Description
DSM Somos® 8110 is a high-speed liquid photopolymer that produces flexible, high-impact-strength, accurate parts using stereolithography machines. It has a wide processing latitude and excellent tolerance to a wide temperature and humidity range during and after build. This material is especially useful in functional applications where flexibility and impact-strength are critical requirements (e.g., plastic bottles, packaging, automobile panels, electronic enclosures, medical products, and snap-fit parts).
Application
Somos® 8110 Photopolymer is used in the solid imaging process to build three-dimensional parts. It is for use with a layer thickness of approximately 0.10 mm to 0.25 mm (0.004 inch to 0.010 inch). After part formation via UV laser exposure, rinsing with a solvent such as tripropylene glycol monomethylether (TPM) or 2-propanol (isopropyl alcohol, IPA) removes the excess resin. Then the part is post-cured by UV fluorescent light.
Physical Properties - Liquid
| Appearance |
Transparent amber |
| Viscosity |
~600 cps at 30°C |
| Density |
~1.11 g/cm3 at 25°C |
Optical Properties at 325 nm
Initial values for determining working curve for a He-Cd laser operating at 325 nm.
| EC |
6.0 mJ/cm2
[critical exposure] |
| DP |
0.135 mm (.0053 inch)
[slope of cure-depth vs. In(E) curve] |
| E5 |
15 mJ/cm2
[exposure that gives a 0.127 mm (.005 inch) thickness] |
| E10 |
40 mJ/cm2
[exposure that gives a 0.254 mm (.010 inch) thickness] |
Physical Properties
The numbers reported below are only approximate values. The actual values may vary with build conditions.
| ASTM Test |
Description |
Somos® 8110 UV |
| D638M |
Tensile Strength |
2,600 psi |
18 MPa |
|
Elongation at Break |
27 % |
27 % |
|
Young's Modules |
46,000 psi |
317 MPa |
| D790M |
Flexural Strength |
1,600 psi |
11 MPa |
|
Flexural Modules |
45,000 psi |
310 MPa |
| D2240 |
Hardness (Shore D) |
77 |
77 |
| D256A |
Izod Impact - Notched |
1.6 ft-lb/in |
87 J/m |
| D648 |
Deflection Temperature |
129 °F |
129 °C |
| D1004 |
Graves Tear |
44 lbf |
196 Newton |
| ASTM Test |
Description |
Polyethylene* |
| D638M |
Tensile Strength |
13-28 MPa |
|
Elongation at Break |
100-965 % |
|
Young's Modules |
262-517 MPa |
| D790M |
Flexural Strength |
Not Available |
|
Flexural Modules |
310 MPa |
| D2240 |
Hardness (Shore D) |
44-50 |
| D256A |
Izod Impact - Notched |
53 J/m - No break |
| D648 |
Deflection Temperature |
55-56 °C |
| D1004 |
Graves Tear |
Not Available |
Low and medium density polyethylene linear copolymer (Reference: Modern Plastics Encyclopedia, 1998). |
