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DSM Somos® ProtoGen™ 18120 Epoxy Resin for Stereolithography, UV & Thermal Postcure
Categories: Polymer; 3D Printing/Additive Manufacturing Polymer; Thermoset; Epoxy

Material Notes: Description: DSM’s Somos® ProtoGen 18120 is a liquid, ABS-like photopolymer that produces accurate parts ideal for general purpose applications. Somos® ProtoGen resins are the first stereolithography resins to demonstrate different material properties based on machine exposure control. Based on Somos® Oxetane™ chemistry, Somos® ProtoGen 18120 offers superior chemical resistance, a wide processing latitude and excellent tolerance to a broad range of temperature and humidity, both during and after the build.

Application: This high-temperature resistant, ABS-like photopolymer is used in solid imaging processes, such as stereolithography, to built three-dimensional parts. Somos® ProtoGen 18120 provides considerable processing latitude and is ideal for the medical, electronic, aerospace and automotive markets that demand accurate RTV patterns, durable concept models, highly accurate and humidity & temperature resistant parts.

Information Provided by DSM Desotech Inc.

Vendors:
Proto3000 provides design tools, 3D printers, additive manufacturing processes, metrology technologies, high-performance materials, and part-finishing automation. Our ISO 9001:2015 additive manufacturing production facility offers 3D printing services, rapid prototyping services, and end-part production with HP MultiJet Fusion (MJF), FDM, SLA, SLS, Polyjet, DLP, metal binder jetting, BMD, and DMLS.


Axis Proto Inc. Innovative partners in producing fast Rapid Prototyping and short run manufacturing solutions using large scale 3D printing systems including SLA printing technology. Free 3D printing quotes at www.axisproto.com

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Physical PropertiesOriginal ValueComments
Density 1.16 g/cc
@Temperature 25.0 °C
Water Absorption 0.75 %ASTM D570-98
Viscosity 300 cP
@Temperature 30.0 °C
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 87 - 88ASTM D2240
Tensile Strength, Yield 68.8 - 69.2 MPaASTM D638M
Elongation at Break 7.0 - 8.0 %ASTM D638M
Tensile Modulus 2910 - 2990 MPaASTM D638M
Flexural Strength 88.5 - 91.5 MPaASTM D790M
Flexural Modulus 2330 - 2490 MPaASTM D790M
Poissons Ratio 0.43ASTM D638M
Shear Modulus 1.02 - 1.05 GPaCalculated
Izod Impact, Notched 0.130 - 0.250 J/cmASTM D256A
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 3.2 - 3.3
@Frequency 1e+6 Hz
ASTM D150-98
 3.4 - 3.5
@Frequency 1000 Hz
ASTM D150-98
 3.5 - 3.6
@Frequency 60.0 Hz
ASTM D150-98
Dielectric Strength 15.2 - 15.7 kV/mmASTM D149-97a
 
Thermal PropertiesOriginal ValueComments
CTE, linear 63.7 - 71.8 µm/m-°C
@Temperature -40.0 - 0.000 °C
ASTM E831-00
 75.0 - 107.5 µm/m-°C
@Temperature 0.000 - 50.0 °C
ASTM E831-00
 99.4 - 111 µm/m-°C
@Temperature 50.0 - 100 °C
ASTM E831-00
 143.4 - 173.3 µm/m-°C
@Temperature 100 - 150 °C
ASTM E831-00
Deflection Temperature at 0.46 MPa (66 psi) 95.0 - 97.0 °CASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 79.0 - 82.0 °CASTM D648-98c
Glass Transition Temp, Tg 76.0 - 94.0 °CASTM E1545-00
 
Descriptive Properties
AppearanceTranslucent
Dp (mm)4.57Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2)57Exposure that gives 0.254mm thickness
Ec (mJ/cm2)6.73Critical exposure

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