DSM Somos® ProtoGen™ O-XT 18120 Epoxy Resin for Stereolithography, UV Postcure at HOC -2

Category	Polymer , Rapid Prototyping Polymer , Thermoset , Epoxy
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™ O-XT 18120 Epoxy Resin for Stereolithography, UV Postcure at HOC -2.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

DescriptionDSM Somos® ProtoGen O-XT 18120 is a liquid 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 18120 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 18120 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	0.77 %	0.77 %	ASTM D570-98
Viscosity	300 cP @Temperature 30.0 °C	300 cP @Temperature 86.0 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	84 - 85	84 - 85	ASTM D2240
Tensile Strength, Yield	51.7 - 54.9 MPa	7500 - 7960 psi	ASTM D638M
Elongation at Break	6.0 - 12 %	6.0 - 12 %	ASTM D638M
Tensile Modulus	2.62 - 2.74 GPa	380 - 397 ksi	ASTM D638M
Flexural Strength	81.8 - 83.8 MPa	11900 - 12200 psi	ASTM D790M
Flexural Modulus	2.36 - 2.48 GPa	342 - 360 ksi	ASTM D790M
Poissons Ratio	0.43 - 0.45	0.43 - 0.45	ASTM D638M
Izod Impact, Notched	0.140 - 0.260 J/cm	0.262 - 0.487 ft-lb/in	ASTM D256A

Thermal Properties	Metric	English	Comments
CTE, linear	65.1 - 68.1 µm/m-°C @Temperature -40.0 - 0.000 °C	36.2 - 37.8 µin/in-°F @Temperature -40.0 - 32.0 °F	ASTM E831-00
	84.7 - 95.3 µm/m-°C @Temperature 0.000 - 50.0 °C	47.1 - 52.9 µin/in-°F @Temperature 32.0 - 122 °F	ASTM E831-00
	93.8 - 116.9 µm/m-°C @Temperature 50.0 - 100 °C	52.1 - 64.94 µin/in-°F @Temperature 122 - 212 °F	ASTM E831-00
	147 - 155.4 µm/m-°C @Temperature 100 - 150 °C	81.7 - 86.33 µin/in-°F @Temperature 212 - 302 °F	ASTM E831-00
Deflection Temperature at 0.46 MPa (66 psi)	55.0 - 58.0 °C	131 - 136 °F	ASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi)	48.0 - 50.0 °C	118 - 122 °F	ASTM D648-98c
Glass Transition Temp, Tg	71.0 - 86.0 °C	160 - 187 °F	ASTM E1545-00

Electrical Properties	Metric	English	Comments
Dielectric Constant	3.1 - 3.2 @Frequency 1.00e+6 Hz	3.1 - 3.2 @Frequency 1.00e+6 Hz	ASTM D150-98
	3.3 - 3.4 @Frequency 1000 Hz	3.3 - 3.4 @Frequency 1000 Hz	ASTM D150-98
	3.4 - 3.5 @Frequency 60.0 Hz	3.4 - 3.5 @Frequency 60.0 Hz	ASTM D150-98
Dielectric Strength	14.4 - 15.3 kV/mm	366 - 389 kV/in	ASTM D149-97a

Descriptive Properties	Value	Comments
Appearance	Translucent
Dp (mm)	0.12	Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2)	57	Exposure that gives 0.254mm thickness
Ec (mJ/cm2)	6.38	Critical exposure

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