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DSM Somos® ProtoGen™ 18920 Liquid Photopolymer, UV Postcure
Categories: Polymer; 3D Printing/Additive Manufacturing Polymer

Material Notes: Product Description

DSM’s Somos® ProtoGen 18920 is a liquid photopolymer that produces accurate, ABS-like 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 18920 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.

Applications

This high-temperature resistant, ABS-like photopolymer is used in solid imaging processes, such as 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 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. Leaders in producing fast Rapid Manufacturing and Prototyping solutions using the major 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 0.78 %ASTM D570-98
Viscosity 350 cP
@Temperature 30.0 °C
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85 - 86ASTM D2240
Tensile Strength, Yield 46.6 - 47.8 MPaASTM D638M
Elongation at Break 13 - 19 %ASTM D638M
Tensile Modulus 2103 - 2317 MPaASTM D638M
Flexural Strength 73.0 - 75.0 MPaASTM D790M
Flexural Modulus 2126 - 2314 MPaASTM D790M
Izod Impact, Notched 0.180 - 0.280 J/cmASTM D256A
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 3.21
@Frequency 1e+6 Hz
ASTM D150-98
 3.44
@Frequency 1000 Hz
ASTM D150-98
 3.53
@Frequency 60.0 Hz
ASTM D150-98
Dielectric Strength 15.4 - 15.9 kV/mmASTM D149-97a
 
Thermal PropertiesOriginal ValueComments
CTE, linear 69.4 µm/m-°C
@Temperature -40.0 - 0.000 °C
ASTM E831-05
 74.0 µm/m-°C
@Temperature 0.000 - 50.0 °C
ASTM E831-05
 106 µm/m-°C
@Temperature 50.0 - 100 °C
ASTM E831-05
 130.3 µm/m-°C
@Temperature 100 - 150 °C
ASTM E831-05
Deflection Temperature at 0.46 MPa (66 psi) 58.7 °CASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 51.0 °CASTM D648-98c
Glass Transition Temp, Tg 69.0 °CASTM E1545-00
 
Descriptive Properties
AppearanceGray
Dp (mm)4.2Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2)76Exposure that gives 0.254mm thickness
Ec (mJ/cm2)7Critical exposure

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PDSMT009 / 93529

Specialty Compounds RTP Company

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