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Armstrong C-7/W Epoxy Adhesive, 2:3 Mix Ratio

Category Polymer , Adhesive , Thermoset , Epoxy , Epoxy Adhesive, Flexible
Manufacturer Armstrong Epoxy Adhesives; Resin Technology Group
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Armstrong C-7/W Epoxy Adhesive, 2:3 Mix Ratio.pdf
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Material Notes:
A clear, unfilled, medium viscosity adhesive recommended for use with any Armstrong Activator. Physical property data included covers C-7 used with Activators W and H-20. All other Activators may also be used to achieve specific characteristics in the completed bond- see appropriate Data Sheet for details. C-7 with Activator W offers maximum versatility in that differing degrees of flexibility can be achieved by varying the mixing ratios within the recommended limits. C-7 with Activator W meets the requirements of Navy Specs. XWS15351 and WS 09125C. C-7, when used with Activator H-20, offers a tough yet rigid bond.Information provided by Ellsworth Adhesives.
Physical Properties Metric English Comments
Viscosity 25000 cP
25000 cP
Mixed
Mechanical Properties Metric English Comments
Hardness, Shore D 68
68
Tensile Strength, Ultimate 26.5 MPa
3850 psi
after optimum cure
Elongation at Break 21.7 %
21.7 %
Adhesive Bond Strength 34.5 MPa
5000 psi
Steel-Steel; after optimum cure
1.72 MPa

@Temperature 82.2 °C
250 psi

@Temperature 180 °F
Aluminum-Aluminum tensile shear
21.0 MPa

@Temperature 25.0 °C
3050 psi

@Temperature 77.0 °F
Aluminum-Aluminum tensile shear
23.8 MPa

@Temperature -54.4 °C
3450 psi

@Temperature -66.0 °F
Aluminum-Aluminum tensile shear
Thermal Properties Metric English Comments
CTE, linear 13.0 µm/m-°C

@Temperature 20.0 °C
7.22 µin/in-°F

@Temperature 68.0 °F
Glass Transition Temp, Tg 42.0 °C
108 °F
Processing Properties Metric English Comments
Processing Temperature 22.2 °C
72.0 °F
93.3 °C
200 °F
Optimum cure is 15 min. @ 200°F
149 °C
300 °F
Fast cure is 5 min. @ 300°F
Pot Life <= 90.0 min

@Temperature 25.0 °C
<= 90.0 min

@Temperature 77.0 °F
100 g
Descriptive Properties Value Comments
Color Amber
Mix Ratio 2/3
By Weight
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