Henkel Hysol EA9309.3NA Epoxy Paste Adhesive

This toughened two-part paste adhesive bonds metal skins and honeycomb core to yield tough, permanently flexible joints resistant to humidity, water and most common fluids. Contains 5 mil/0.13 mm glass beads for bondline thickness control. Its outstanding feature is high shear and peel strength to aluminum.

Handling

Mixing: This product requires mixing two components together just prior to application to the parts to be bonded. Complete mixing is necessary. The temperature of the separate components prior to mixing is not critical, but should be close to room temperature (77°F/25°C).

Mix Ratio By Weight

Part A: 100
Part B: 22

Note: Volume measurement is not recommended for structural applications unless special precautions are taken to assure proper ratios.

Pot Life (450 gm mass): 35 minutes
Method: ASTM D2471 in water bath

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 450 grams as dangerous heat buildup can occur causing uncontrolled decomposition of the mixed adhesive. TOXIC FUMES CAN OCCUR, RESULTING IN PERSONAL INJURY. Mixing smaller quantities will minimize the heat buildup.

Applying: Bonding surfaces should be clean, dry and properly prepared. For optimum surface preparation consult the Hysol Surface Preparation Guide. The bonded parts should be held in contact until the adhesive is set. Handling strength for this adhesive will occur in 12 hours @ 77°F/25°C, after which the support tooling or pressure used during cure may be removed. Since full bond strength has not yet been attained, load application should be small at this time.

Curing: This adhesive may be cured for 3 to 5 days @ 77°F/25°C or 1 hour @ 180°F/82°C to achieve normal performance.

Cleanup: It is important to remove excess adhesive from the work area and application equipment before it hardens. Denatured alcohol and many common industrial solvents are suitable for removing uncured adhesive. Consult your supplier's information pertaining to the safe and proper use of solvents.

Uncured Adhesive Properties Part A Part B Color Pink Blue Viscosity @ 77°F 3,000 Poise 0.2 Poise Brookfield, HBT Spdl 7 @ 20 rpm Spdl 1 @ 60 rpm (LVF) Density 1.15 1.0 Viscosity @ 25°C 300 Pa·S 0.02 Pa·S Brookfield, HBT Spdl 7 @ 2.1 rad/s Spdl 1 @ 6.3 rad/s Warranty Life @ 77°F 1 year 1 year

Bond Strength Performance

Tensile Lap Shear Strength
Tensile lap shear strength tested per ASTM D1002 after curing for 5 days @ 77°F/25°C. Adherends are 2024-T3 alclad aluminum treated with phosphoric acid anodizing per ASTM D3933.

Test Typical Results Tensile Lap Shear Strength -67/-55 (°F/°C) 77/25 (°F/°C) 180/82 (°F/°C) 4,000/27.6 (psi/MPa) 4,200/28.9 (psi/MPa) 1,000/6.9 (psi/MPa) Tensile Lap Shear Strength Control, 77°F/25°C 77°F Water - 30 days 120°F/49°C - 98% RH - 30 days Hydraulic Oil - 7 days JP-4 Fuel - 7 days Salt Spray - 105°F/41°C - 30 days Anti-icing Fluid - 7 days Hydrocarbon III - 7 days Skydrol 500 - 7 days Creep Deflection at 77°F after 192 hrs @ 1600 psi load (11.0 Mpa) 4,800/33.1 (psi/MPa) 4,700/32.4 (psi/MPa) 5,100/35.2 (psi/MPa) 4,600/31.7 (psi/MPa) 4,700/32.3 (psi/MPa) 5,000/32.4 (psi/MPa) 4,500/31.3 (psi/MPa) 4,300/29.6 (psi/MPa) 4,600/31.7 (psi/MPa) 0.00056 in/0.0142 mm

Peel Strength
T-Peel strength tested per ASTM D1876 after curing for 3 to5 days @ 77°F/25°C. Adherends are 2024-T3 alclad aluminum treated with phosphoric acid anodizing per ASTM D3933.

Test Temperature: 77°F/25°C
Typical Results: 35 Lb/in, 156 N/25mm

Service Temperature
Service temperature is defined as that temperature at which this adhesive still retains 1000 psi/6.9 MPa using test method ASTM D1002 and is approximately 180°F/82°C.

Dexter QC Acceptance Testing
This data sheet provides users with typical properties obtained from this adhesive. These values are not meant to be used to develop aerospace QC acceptance testing. Users interested in establishing values and tests for routine QC acceptance should request the Dexter Aerospace Specification (DAS) which provides detail test methods and values used to certify this adhesive.

Bulk Resin Properties

Tensile Properties
Tested using 0.125 inch/3.18 mm castings per ASTM D638.

Bulk Resin Properties Typical Results Tensile Properties Tensile Strength @ 77°F/25°C Tensile Modulus @ 77°F/25°C Elongation at Break, % @ 77°F/25°C Shore D Hardness @ 77°F/25°C Shear Modulus Poisson’s Ratio 4,500 psi/31.0 MPa 324 ksi/2,232 MPa 10% 80 124 ksi/854 MPa 0.42 Glass Transition Temperature (Cure 7 days @ 77°F) Tg dry (77°F/25°C) (Tan delta by DMTA) Tg wet (Tan delta by DMTA) 138.2°F/59°C 127.4°F/53°C Compressive Properties (0.5 inch/12.7 mm castings, ASTM D695) Compressive Strength @ 77°F/25°C Compressive Modulus @ 77°F/25°C 7,500 psi/51.7 MPa 245 ksi/1,688 MPa Electrical Properties (ASTM D149, D150) Dielectric Constant Dissipation Factor Volume Resistivity (ohm-cm) Surface Resistivity (ohm) Thermal Conductivity (cal/sec-cm-°C) 4.33 (0.1 KHz)/4.29 (1.0 KHz)/4.17 (10.0 KHz) .018 (0.1 KHz)/.014 (1.0 KHz)/.028 (10.0 KHz) 1.36 x 10^14 (0.1 KHz) 4.94 x 10^14 (0.1 KHz) 4.50 x 10-4 (0.1 KHz)