Hysol ®
You may print this page for your file
Epoxy Adhesive
Description
9739 is a two part epoxy adhesive which provides excellent temperature resistance and good adhesion to a variety of substrates. It is readily mixed and dispensed in assembly operations.
Features
High Temperature Resistance Black Color Thixotropic Paste
Good Chemical Resistance Heat or RT Cure
Typical Properties
Part A Part B Mixed
Color Black White Black
Viscosity @ 77°F, poise 8,000-20,000 15,000-30,000
Specific Gravity @ 77°F 1.47 1.201.41
Density, Lbs/Gal 12.2 10.0 11.7
Shelf Life @ 77°F 24 months 24 months
Handling
Mixing : This product requires mixing two components together just prior to application to the parts to be bonded. Complete mixing is necessary.
Mix Ratio Part A Part B
By Weight 100 25
By Volume 3.3 1
Pot Life, 50 grams 90 minutes
Application
Mixing: Combine Part A and Part B in the correct ratio and mix thoroughly. THIS IS IMPORTANT! Heat buildup during or after mixing is normal. Do not mix quantities greater than one pound (1 lb.), as excessive heat buildup can occur. Mixing smaller quantities will minimize the heat buildup.
Applying: Bonding surfaces should be clean and dry. For optimum surface preparation, consult Dexter's Bulletin " Preparing the Surface for Adhesive Bonding". Hysol 9739 can be applied with a spatula, brush or dispensing machine. Once the adhesive is dispensed, the bonded parts should be held in contact until the part has developed handling strength. Fixturing can be removed at this point. Since full bond strength has not yet been attained, load application should be small at this time.
Curing: Hysol 9739 will cure to ultimate properties in 3 days at room temperature. Oven temperatures up to 300°F can be used. At 300°F complete cure will take place in 15-20 minutes. Lower temperatures can also be used.
Cleanup: It is important to remove excess adhesive from the work area and application equipment before it hardens. Denatured alcohol and many common solvents are suitable for removing uncured adhesive. Consult with your supplier's information pertaining to the safe and proper use of solvents.
Bond Strength Performance
Tensile Lap Shear Strength
Tensile lap shear strength was tested on etched aluminum per ASTM D1002 after curing for 20 minutes at 300°F.
Substrate Test Temp. °F Typical Results, psi
Etched Aluminum 77 2500
300 1000
-20 2500
Vinyl Ester BMC 77 850
300450
Environmental Exposure
Tensile lap shear strength bonds on etched aluminum were exposed to various conditions then allowed to recover for 24 hours and tested at 75°F per ASTM D1002.
Exposure Typical Results, psi
14 days @ 190°F 2500
14 days @ 100°F and 100% Relative Humidity 2500
14 days Immersion in 300°F Motor Oil 2500
10 Thermal Cycles: 2300
16 hours @ 100°F/100% RH
4 hours @ -40°F
4 hours @ 190°F