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DSM Somos® ProtoGen™ 18420 Epoxy Resin for Stereolithography, UV Postcure at HOC -2
Categories: Polymer; 3D Printing/Additive Manufacturing Polymer; Thermoset; Epoxy

Material Notes: Description: DSM’s Somos® ProtoGen 18420 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 18420 offers superior chemical resistance, a wide processing latitude and excellent tolerance to a broad range of temperatures and humidity, both during and after the build.

Application: This high-temperature resistant, ABS-like photopolymer is used in solid imaging processes, like stereolithography, to build three-dimensional parts. Somos® ProtoGen 18420 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. North American leaders in providing high quality Rapid Prototyping and Additive Manufacturing solutions using all major 3D printing systems including SLA technology. Free 3D printing quotes at www.axisproto.com

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Physical PropertiesMetricEnglishComments
Density 1.16 g/cc
@Temperature 25.0 °C
0.0419 lb/in³
@Temperature 77.0 °F
Water Absorption 0.68 %0.68 %ASTM D570-98
Viscosity 350 cP
@Temperature 30.0 °C
350 cP
@Temperature 86.0 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 86 - 8886 - 88ASTM D2240
Tensile Strength, Yield 42.2 - 43.8 MPa6120 - 6350 psiASTM D638M
Elongation at Break 8.0 - 16 %8.0 - 16 %ASTM D638M
Tensile Modulus 2.18 - 2.31 GPa316 - 335 ksiASTM D638M
Flexural Strength 66.7 - 70.5 MPa9670 - 10200 psiASTM D790M
Flexural Modulus 1.19 - 2.13 GPa173 - 309 ksiASTM D790M
Poissons Ratio 0.43 - 0.450.43 - 0.45ASTM D638M
Izod Impact, Notched 0.200 - 0.220 J/cm0.375 - 0.412 ft-lb/inASTM D256A
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant  3.1 - 3.3
@Frequency 1e+6 Hz
3.1 - 3.3
@Frequency 1e+6 Hz
ASTM D150-98
 3.4 - 3.5
@Frequency 1000 Hz
3.4 - 3.5
@Frequency 1000 Hz
ASTM D150-98
 3.5 - 3.6
@Frequency 60.0 Hz
3.5 - 3.6
@Frequency 60.0 Hz
ASTM D150-98
Dielectric Strength 13.2 - 14.2 kV/mm335 - 361 kV/inASTM D149-97a
 
Thermal PropertiesMetricEnglishComments
CTE, linear  74.6 - 75.5 µm/m-°C
@Temperature -40.0 - 0.000 °C
41.4 - 41.9 µin/in-°F
@Temperature -40.0 - 32.0 °F
ASTM E831-00
 101.2 - 110.3 µm/m-°C
@Temperature 0.000 - 50.0 °C
56.22 - 61.28 µin/in-°F
@Temperature 32.0 - 122 °F
ASTM E831-00
 114.4 - 135.8 µm/m-°C
@Temperature 50.0 - 100 °C
63.56 - 75.44 µin/in-°F
@Temperature 122 - 212 °F
ASTM E831-00
 129.5 - 138.1 µm/m-°C
@Temperature 100 - 150 °C
71.94 - 76.72 µin/in-°F
@Temperature 212 - 302 °F
ASTM E831-00
Deflection Temperature at 0.46 MPa (66 psi) 53.0 - 56.0 °C127 - 133 °FASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 46.0 - 47.0 °C115 - 117 °FASTM D648-98c
Glass Transition Temp, Tg 57.0 - 59.0 °C135 - 138 °FASTM E1545-00
 
Descriptive Properties
AppearanceWhite
Dp (mm)4.34Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2)67.6Exposure that gives 0.254mm thickness
Ec (mJ/cm2)6.73Critical exposure

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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