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Hysol ® 9412Black
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Epoxy Adhesive 

Description
Hysol 9412 Black is a  low viscosity, two-part black epoxy adhesive which provides flexible bonds. The low viscosity of the mixed adhesive allows it to be injected into preassembled parts. The flexibility of the cured adhesive makes it useful for bonding dissimilar substrates. Hysol 9412 Black can also be used as a laminating resin and for potting small pots.

Features
High peel strength                                                                          Excellent low temperature properties
Room temperature cure                                                                  Pourable –low viscosity

Typical Properties
                                                                              Part A                      Part B                           Mixed
Color                                                                     Black                         Red                               Black
Viscosity, Poise                                                     23,000                      40                                   1200
Brookfield HBT                                                   Spdl 3 @ 20 rpm     Spdl 1 @ 100 rpm       Spdl 1 @ 20 rpm
Specific Gravity @ 77oF                                       1.13                           1.01                               1.10
Pounds per gallon                                                9.4                             8.4                                 9.2

Handling
Mixing: This product requires mixing two components together just prior to the application. Complete mixing is necessary. The temperature of the separate components prior to mixing is not critical, but they should be at room temperature.
                                                                              Part A                       Part B
By weight                                                              100                             25
By volume                                                             3.5                              1

Pot life (250-gram mass)
As determined by a Gardener Gel Timer           60 minutes
Peak Exotherm                                    370°F @ 70 minutes

Application
Mixing – Bulk: Combine Part A (resin) and Part B (hardener) in the correct ratio and mix thoroughly until the color and consistency are uniform. Ratios given above can be used for measuring larger amounts. Mixing the adhesive just prior to use is recommended.  Heat build-up during or after mixing is normal. Do not mix quantities greater than ten pounds as dangerous heat build-up can occur causing uncontrolled decomposition of the mixed adhesive. Mixing smaller quantities will minimize the heat build-up.

Application: Bonding surfaces should be clean and dry. For optimum surface preparation, consult Dexter's bulletin "Preparing the Surface for Adhesive Bonding". Once the adhesive is applied, the bonded parts should be held in contact until the part has developed handling strength.
Cure: Hysol 9412 may be cured for 5 days at 77oF to achieve normal performance. Accelerated cures up to 180°F may be used as an alternative. For example 1 hour at 180oF will give complete cure.

Clean up: It is important to remove excess adhesive from the work area and application equipment before it hardens. Many common solvents and citrus cleaners are suitable for removing uncured adhesive. Consult with your supplier's information pertaining to the safe and proper use of solvents.

Performance
Tensile Lap Shear Strength
Tensile lap shear strength was tested on etched aluminum per ASTM D1002 after curing for 5 days at 77°F on 1"x 0.5" overlap specimen.

Substrate                                                           Test Temp. °F                                       Typical Results, psi
Etched Aluminum                                           77                                                           4000
                                                                          -67                                                          4200
                                                                          140                                                          900
                                                                          160                                                          600
Degreased Aluminum                                      77                                                           4050
FRP                                                                    77                                                            1400
                                                                                                                                          (Substrate failure)
Etched aluminum after environmental exposures:
30 day salt spray                                                77                                                            3950
30 day @ 120°F, @                                          77                                                            3600
100% relative humidity

Peel Strength
Floating roller peel tested per ASTM D 3167 at a crosshead speed of six inches per minute
Substrate                                                         Test Temperature, °F                            Peel Strength, pli
Etched Aluminum                                           77                                                             59

Bulk Properties
Tensile properties tested at room temperature on 0.125 inch castings per ASTM D 638
Tensile strength, psi                                                        6300
Tensile modulus, psi                                                      330,000
Elongation @ break, %                                                  8.0
Shore D hardness                                                            76

Packaging
Quart, one and five gallon systems
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DISCLAIMER: The information supplied in this document is for guidance only and should not be construed as a warranty.  All implied warranties are expressly disclaimed.  Including without limitation any warranty of merchantability and fitness for use: All users of the materials are responsible for assuring that it is suitable for their needs, environment and use.  All data is subject to change as Dexter deems appropriate. Users should review the Material Safety Data Sheet (MSDS) and product label for the material to determine possible health hazards, appropriate engineering controls and precautions to be observed in using the material.  Copies of the MSDS and label are available upon request.

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