Somos® WaterShed 11120

Product catalog summary

Product Overview: DSM’s Somos® WaterShed 11120 is a low viscosity liquid photopolymer designed to produce strong, tough, water-resistant, ABS-like parts. It is nearly colorless, resembling clear engineered plastic, and incorporates DSM’s Somos® Oxetane Advantage™ for enhanced water resistance and dimensional stability.

Applications: The material mimics traditional engineering plastics like ABS and PBT, making it suitable for automotive, medical, and consumer electronics applications. Common uses include lenses, packaging, water flow analysis, RTV patterns, durable concept models, wind tunnel testing, and quickcast patterns.

Technical Data - Liquid Properties:

Appearance: Optically clear, near colorless
Viscosity: ~260 cps @ 30°C
Density: ~1.12 g/cm³ @ 25°C

Technical Data - Optical Properties:

Critical Exposure (EC): ~11.5 mJ/cm²
Slope of Cure-Depth (DP): 5.5 mils
Exposure for 0.254 mm Thickness (E10): 54 mJ/cm²

Mechanical Properties:

Tensile Strength at Break: 47.1 - 53.6 MPa
Elongation at Break: 11 - 20%
Modulus of Elasticity: 2,650 - 2,880 MPa
Flexural Strength: 63.1 - 74.2 MPa
Izod Impact (Notched): 0.2 - 0.3 J/m
Hardness (Shore D): 86 - 87
Water Absorption: 0.35%

Thermal/Electrical Properties:

Coefficient of Thermal Expansion (C.T.E.): 66 - 67 µm/m°C (-40 - 0°C), 90 - 96 µm/m°C (0 - 50°C)
Dielectric Constant: 3.9 - 4.1 (60 Hz), 3.7 - 3.9 (1 KHz), 3.4 - 3.5 (1 MHz)
Dielectric Strength: 15.4 - 16.3 kV/mm
Glass Transition Temperature (Tg): 39 - 46°C
Heat Deflection Temperature (HDT) @ 0.46 MPa: 45.9 - 54.5°C

Disclaimer: DSM Desotech disclaims any implied warranties, including merchantability and fitness for a particular purpose. Purchasers are responsible for determining product suitability and obtaining necessary patent rights.

Catalog excerpts

GOING BEYOND INNOVATION Product Data Sheet Description DSM’s Somos® Watershed 11120 is a low viscosity liquid photopolymer that produces strong, tough, water-resistant, ABS-like parts. Most importantly, parts created with Somos® WaterShed 11120 are nearly colorless, and look more like true, clear engineered plastic. In addition, Somos® WaterShed has been formulated with the DSM’s Somos® Oxetane Advantage™— an advanced chemistry platform that produces parts with outstanding water resistance and high dimensional stability. Applications Somos® WaterShed 11120 offers many properties that mimic traditional engineering plastics, including ABS and PBT. This makes the material ideal for many applications in the automotive, medical and consumer electronic markets and include lenses, packaging, water flow analysis, RTV patterns, durable concept models, wind tunnel testing and quickcast patterns.

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TECHNICAL DATA

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