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DSM Somos® ProtoGen™ O-XT 18420 Epoxy Resin for Stereolithography, UV Postcure at HOC -2

Category Polymer , Rapid Prototyping Polymer , Thermoset , Epoxy
Manufacturer DSM Somos
Trade Name ProtoGen™
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DSM Somos® ProtoGen™ O-XT 18420 Epoxy Resin for Stereolithography, UV Postcure at HOC -2.pdf
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Material Notes:
DescriptionDSM Somos® ProtoGen O-XT 18420 is a liquid, ABS-like, photopolymer that produces accurate parts ideal for general purpose applications. ProtoGen resins are the first SL resins to demonstrate different material properties based on machine exposure control. Based on Somos oxetane chemistry, ProtoGen O-XT 18420 offers superior chemical resistance, a wide processing latitude and excellent tolerance to a broad range of temperatures and humidities, both during and after build.ApplicationThis high-temperature, ABS-like photopolymer is used in the solid imaging process to build three-dimensional parts. Somos® ProtoGen O-XT 18420 provides considerable processing latitude and is ideal for the medical, electronic, aerospace and automotive markets that demand:Accurate RTV patternsDurable concept modelsHighly accurate partsHumidity and temperature tolerant partsInformation Provided by DSM Desotech Inc.
Physical Properties Metric English Comments
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 Properties Metric English Comments
Hardness, Shore D 86 - 88
86 - 88
ASTM D2240
Tensile Strength, Yield 42.2 - 43.8 MPa
6120 - 6350 psi
ASTM D638M
Elongation at Break 8.0 - 16 %
8.0 - 16 %
ASTM D638M
Tensile Modulus 2.18 - 2.31 GPa
316 - 335 ksi
ASTM D638M
Flexural Strength 66.7 - 70.5 MPa
9670 - 10200 psi
ASTM D790M
Flexural Modulus 1.19 - 2.13 GPa
173 - 309 ksi
ASTM D790M
Poissons Ratio 0.43 - 0.45
0.43 - 0.45
ASTM D638M
Izod Impact, Notched 0.200 - 0.220 J/cm
0.375 - 0.412 ft-lb/in
ASTM D256A
Thermal Properties Metric English Comments
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 °C
127 - 133 °F
ASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 46.0 - 47.0 °C
115 - 117 °F
ASTM D648-98c
Glass Transition Temp, Tg 57.0 - 59.0 °C
135 - 138 °F
ASTM E1545-00
Electrical Properties Metric English Comments
Dielectric Constant 3.1 - 3.3

@Frequency 1.00e+6 Hz
3.1 - 3.3

@Frequency 1.00e+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/mm
335 - 361 kV/in
ASTM D149-97a
Descriptive Properties Value Comments
Appearance White
Dp (mm) 0.11
Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2) 67.6
Exposure that gives 0.254mm thickness
Ec (mJ/cm2) 6.73
Critical exposure
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