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 Manitowoc
Prototypes, Inc.
5101 Homestead Rd.
Manitowoc, WI
54220

Phone: (920)
682-1388

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WaterClear 10120 Epoxy Photopolymer

Description

DSM Somos® 10120 is a high-speed liquid photo-polymer that produces strong, rigid and durable parts with optical clarity using stereolithography machines. 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 provide strong and 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 0.064 mm to 0.15 mm (0.0025 inch to 0.006 inch). After part formation via UV laser exposure, rinsing with a solvent such as tripropylene glycol monomethylether (TPM) or propylene carbonate, or 2-propanol (isopropyl alcohol, IPA) removes the excess resin. Somos® 10120 requires a minimal post-cure by UV fluorescent light. Prolonged exposure to UV light will create a yellow tinge to the parts.

Physical Properties - Liquid

Appearance Optically clear
Viscosity ~130 cps at 30°C
Density ~1.12 g/cm3 at 25°C

Optical Properties at 55 nm

EC 9.7 mJ/cm2
[critical exposure]
DP 0.16 mm (.0063 inch)
[slope of cure-depth vs. In(E) curve]
E10 48 mJ/cm2
[exposure that gives a 0.254 mm (.010 inch) thickness]

Mechanical Properties (Imperial)

ASTM Test Description WaterClear
10120
ABS*
(transparent)
Polycarbonate*
(optical grade)
Nylon 66°
D638M Tensile Strength 3,736 psi 6,628 psi 9,065 psi 9,224 psi
  Elongation at Break 32% 41.6% 110% 82.8%
  Elongation at Yield 4.2% N/A 6% 10.7%
  Modulus of Elasticity 248,000 psi 290,000 psi 334,000 psi 305,000 psi
D790M Flexural Strength 5,726 psi 10,660 psi 13,663 psi 12,821 psi
  Flexural Modulus 190,580 psi 334,000 psi 334,000 psi 305,000 psi
D256A Izod Impact-Notched 0.914 ft-lb/in 1.5 - 2.0 ft-lb/in 13 ft-lb/in 2.8 ft-lb/in
D542 Index of Refraction 1.51 1.52 1.59 N/A
D2240 Hardness (Shore D) 81 N/A N/A N/A
D1004 Graves Tear 821 lb N/A N/A N/A
D570-98 Water Absorption 1.21% 0.20 - 0.45% 0.17% 2.3%
* http://www.matweb.com/

Thermal & Electrical Properties (Imperial)

ASTM Test Description WaterClear
10120
ABS*
(transparent)
Polycarbonate*
(optical grade)
Nylon 66°
E831-00 C.T.E. -40°C - 0°C 76x10-6 °C-1 60 - 130x10-6 °C-1
(no temp range given)
66x10-6 °C-1
(no temp range given)
80x10-6 °C-1
(no temp range given)
  C.T.E. 0°C - 50°C 119x10-6 °C-1
  C.T.E. 50°C - 100°C 164x10-6 °C-1
  C.T.E. 100°C - 150°C 159x10-6 °C-1
D150-98 Dielectric Constant 60 Hz 4.2 3.7 3.1  
  Dielectric Constant 1 KHz 4.0      
  Dielectric Constant 1 MHz 3.5 3.7 3 3.5 - 3.8
D149-97a Dielectric Strength 390 V/mil 350 - 500 V/mil 671 V/mil 1161 V/mil
E1545-00 Tg 82.4°F (28°C)   302°F (150°C)  
D648-98c HDT @ 66 psi 112°F (44.9°C) 201 - 405°F (94-207°C) 266°F (130°C) 410°F (210°C)
  HDT @ 264 psi 116°F (46.8°C) 187 - 381°F (86-194°C) 266°F (130°C) 177°F (80.5°C)
* http://www.matweb.com/
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