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DSM Somos® ProtoGen™ 18920 Liquid Photopolymer, UV Postcure at HOC +3

Category Polymer , Rapid Prototyping Polymer
Manufacturer DSM Somos
Trade Name ProtoGen™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DSM Somos® ProtoGen™ 18920 Liquid Photopolymer, UV Postcure at HOC +3.pdf
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Material Notes:
Product DescriptionDSM Somos® ProtoGen 18920 is a liquid photopolymer that produces accurate, ABS-like 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 18920 offers superior chemical resistance, a wide processing latitude and excellent tolerance to a broad range of temperatures and humidities, both during and after build.ApplicationsThis high-temperature resistant, ABS-like photopolymer is used in solid imaging processes, like stereolithography, to build three-dimensional parts. Somos ProtoGen 18920 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.Key Product BenefitsHumidity & Temperature TolerantExcellent Dimensional StabilityFast Processing SpeedsInformation 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 0.74 %
0.74 %
ASTM D570-98
Viscosity 350 cP

@Temperature 30.0 °C
350 cP

@Temperature 86.0 °F
Mechanical Properties Metric English Comments
Hardness, Shore D 86.1 - 87.1
86.1 - 87.1
ASTM D2240
Tensile Strength, Yield 56.1 - 56.9 MPa
8140 - 8250 psi
ASTM D638M
Elongation at Break 4.9 - 12.3 %
4.9 - 12.3 %
ASTM D638M
Tensile Modulus 2.577 - 2.623 GPa
373.8 - 380.4 ksi
ASTM D638M
Flexural Strength 85.0 - 87.0 MPa
12300 - 12600 psi
ASTM D790M
Flexural Modulus 2.442 - 2.518 GPa
354.2 - 365.2 ksi
ASTM D790M
Izod Impact, Notched 0.220 - 0.260 J/cm
0.412 - 0.487 ft-lb/in
ASTM D256A
Thermal Properties Metric English Comments
Deflection Temperature at 0.46 MPa (66 psi) 62.8 °C
145 °F
ASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 53.3 °C
128 °F
ASTM D648-98c
Descriptive Properties Value Comments
Appearance Gray
Dp (mm) 0.107
Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2) 75.7
Exposure that gives 0.254mm thickness
Ec (mJ/cm2) 7
Critical exposure
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