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Master Bond adhesives

Gougeon Brothers West System® 105 Epoxy Resin® / 206 Slow Hardener®
Categories: Polymer; Thermoset; Epoxy

Material Notes: 105/206 Epoxy is used for general coating and bonding applications when extended working and cure time are needed or to provide adequate working time at higher temperatures. 105/206 forms a high-strength, moisture-resistant solid with excellent bonding and barrier coating properties. It will wet out and bond to wood fiber, fiberglass, reinforcing fabrics, foam and other composite materials, and a variety of metals. 105/206 Epoxy can be thickened with WEST SYSTEM fillers to bridge gaps and fill voids and can be sanded and shaped when cured. With roller applications, it has excellent thin-film characteristics, allowing it to flow out and self-level without “fish-eyeing.” Multiple coats of 105/206 Epoxy create a superior moisture barrier and a tough, stable base for paints and varnishes. It is formulated without volatile solvents resulting in a very low VOC content. It has a relatively high flash point, no strong solvent odor and does not shrink after curing. It is not intended for clear coating natural finished wood.

Information provided by Gougeon Brothers, Inc.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.18 g/cc1.18 g/cc
Viscosity 725 cP725 cPMixed; ASTM D-2393
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8383ASTM D-2240
Tensile Strength 50.3 MPa7300 psiASTM D638
Elongation at Break 4.5 %4.5 %ASTM D638
Tensile Modulus 3.17 GPa460 ksiASTM D638
Flexural Strength 81.4 MPa11800 psiASTM D-790
Flexural Modulus 3.10 GPa450 ksiASTM D-790
Compressive Yield Strength 79.3 MPa11500 psiASTM D-695
 
Thermal PropertiesMetricEnglishComments
Deflection Temperature at 0.46 MPa (66 psi) 50.6 °C123 °FASTM D-648
Glass Transition Temp, Tg 52.2 °C126 °FOnset
 59.4 °C139 °FUltimate
 
Processing PropertiesMetricEnglishComments
Cure Time 600 - 900 min10.0 - 15.0 hoursolid, thin film
 1440 - 5760 min24.0 - 96.0 hourworking strength
Pot Life 20.0 - 25.0 min20.0 - 25.0 min100 g
Working Life 90.0 - 110 min90.0 - 110 minThin film
 
Descriptive Properties
Mix ratio5 parts resin: 1 part hardenervolume, 300 Mini Pump ratio
 5.19 : 1weight

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PGOUGW903 / 290747

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