Description

DSM Somos® 10120 is a high-speed liquid Photopolymer that produces strong, rigid, and durable parts with optical clarity using stereolithography machines. It has a wide processing latitude and excellent tolerance to a broad temperature and humidity range, during and after build. This material is especially useful in applications requiring optical clarity such as fluid flow analysis, stress analysis and light pipes. Other applications include those that require a strong durable product without the brittleness normally associated with a rigid stereolithography resin.

Application

Somos® 10120 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 monomethyl ether (TPM) or propylene carbonate followed by a rinse in 2 - propanol  (isopropyl alcohol, IPA) removes the excess resin.  Somos®10120 requires a minimal post-cure by UV  fluorescent light. Too long of an exposure in UV light will create a yellow tinge to the parts.

 

Physical Properties – Liquid  

Appearance    Optically clear  
Viscosity   ~130 cps at 30° C  
Density   ~1.2 g/cm3 at 25° C    

Optical Properties at 355 nm  

Initial values for determining working curve for a Solid State laser operating at 355nm

Ec   7.7 mJ/cm2  

 [critical exposure]  

Dp   0.143 mm  (0.0056 inch)  

 [slope of cure-depth vs. ln (E) curve]  

E5   18.8 mJ/cm2  

[exposure that gives  0.127 mm (0.005 inch) thickness]  

E10   45.9 mJ/cm2  

  [exposure that gives 0.254 mm (0.010 inch) thickness]  

 

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Last modified: December 17, 2001