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Description for 3M 847H
Is a high viscosity grade adhesive for many brush or flow applications, quick drying, strong flexible bonds, Excellent resistance to many fuels and oils, May be heat cured to obtain improved physical properties.Chemical Resistance Excellent resistance to many oils, Chemical Resistance: Aromatic solvents, Excellent resistance to many fuels, Chemical Resistance: Ketone Application Type Bond 1 Part or 2 Part 1-Part Material Form Liquid Substrate Nylon, Most Plastics, Rubber, Canvas/Steel, Porous Surface, Nitrile Rubber Manufacturer 3M Chemistry Acetone Cure Method Solvent, Heat cure, Room temperature aged for 3 week Application Temperature (°F) 65 Cure Temperature (°C) 93, 116, 138, 160, 182, 204 Cure Time (min) >120, >40, >12, >8, >5.00, >2.00 Viscosity (cPs) High, 35,000 to 90,000 Color Dark Brown High Temperature Resistance (°C) >82 Low Temperature Resistance (°C) -1, 24 -
Technical Data for 3M 847H
Overview
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Chemical Resistance
- Chemical Resistance - Excellent resistance to many fuels, Excellent resistance to many oils
- Chemical Resistance : Relative Solvent Resistance - Aromatic solvents, Ketone
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
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Industry
- Other - Requiring reduced soak-in, Many brush applications , Many flow applications , Requiring gap filling
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Chemistry
- Solvent-Based - Acetone
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Application Method
- Dispenser - Application equipment
- Brush
- Spray
- Other - Pumping
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Cure Method
- Room Temperature / Air Dry - Room temperature aged for 3 week
- Solvent
- Heat - Heat cure
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Color
- Brown - Dark Brown
Specifications
Cure Specs
Application Temperature (°F) 65 Cure Temperature (°C) 93, 116, 138, 160, 182, 204 Test Method Cure Time (min) >120, >40, >12, >8, >5.00, >2.00 Test Method Viscosity (cPs) High, 35,000 to 90,000 Test Method Fixture or Handling Strength Time (min) <10 Test Method Dry Time (min) Quick Bond Strength
General Bond Strength (psi) Strong, Greater Peel Strength (piw) 13, 24, 28, 31, 35, 40, 20, 16, 9 Test Method Shear Strength (psi) 152, 200, 20, 9 Test Method Material Resistance
High Temperature Resistance (°C) >82 Low Temperature Resistance (°C) -1, 24 Hardness
Flexibility Flexible Other Properties
Flash Point (°F) -0.4 Test Method % Solids (%) 46 to 55 Test Method Business Information
Shelf Life Details Storage: Store product at 60-80°F (15-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis.;Shelf Life: When stored in the original unopened container, under the conditions recommended, these products have a shelf life from date of shipment as follows:3M™ Scotch-Grip™ Rubber & Gasket Adhesive 847-H 7 months, Store product at 60-80°F (15-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis.; When stored in the original unopened container, under the conditions recommended, these products have a shelf life from date of manufacture. Shelf Life Temperature (°F) 59 to 81, 60 to 80 Shelf Life Type From date of shipment, From date of manufacture Shelf Life (mon) 7, 24 -
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Best Practices for 3M 847H
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Surface Preparation
Remove all dust, dirt, oil, grease, wax, loose paint, etc. Wiping with a solvent such as methyl ethyl ketone (MEK) or 3M™ Citrus Base Cleaner will aid in preparing the surface for bonding.
When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
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Application
For best results the temperature of the adhesive and surfaces to be bonded should be at least 65°F (18°C).
Stir well before using.
Porous Surface(s): Brush, flow or spray a thin, even coat of adhesive to one or both surfaces. Coating both surfaces is preferred since it gives greater strength and permits longer open time before bonding. Very absorbent materials may require more than one coat. Bond while adhesive is still wet or aggressively tacky. Join surfaces with firm pressure.
Non-Porous Surfaces: Brush, flow or spray a thin, even coat of adhesive to both surfaces. Allow adhesive to dry until tacky. Join surfaces with firm pressure.
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Curing
Drying time depends on temperature, humidity, air movement, and porosity of the materials bonded. Greater immediate strength may be obtained by heat or solvent reactivation.
Reactivation: To solvent reactivate, coat both surfaces with adhesive. Allow to dry tack-free. Lightly wipe one surface with a solvent such as Methyl Ethyl Ketone (MEK).* Complete bond within 30 seconds.
To heat activate, coat both surfaces with adhesive. Allow adhesive to dry completely. Reactivate by heating one or both surfaces to a minimum of 180°F (82°C). Assemble immediately (while hot), using firm pressure to ensure contact.
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Clean-Up
Excess adhesive may be removed with a solvent such as methyl ethyl ketone (MEK) or acetone, preferably while adhesive is still wet.
When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
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93°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
116°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
138°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
160°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
182°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
204°C | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
Cure Time Test Methods
Cure Time | Test Method |
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>120 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
>40 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
>12 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
>8 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
>5.00 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
>2.00 min | Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line. |
Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time | Fixture-Handling Strength Test Method |
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<10 min | 10 mil wet film 2 surfaces |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
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High | ||
35,000 to 90,000 cPs | Brookfield RVF, (#6 sp @ 4 rpm) | 27°C |
Peel Strength Test Methods
Peel Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
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13 piw | 180° Peel strength | 1,440 min | 24°C | Canvas/Steel | 24°C |
24 piw | 180° Peel strength | 4,320 min | 24°C | Canvas/Steel | 24°C |
28 piw | 180° Peel strength | 7,200 min | 24°C | Canvas/Steel | 24°C |
31 piw | 180° Peel strength | 10,080 min | 24°C | Canvas/Steel | 24°C |
35 piw | 180° Peel strength | 20,160 min | 24°C | Canvas/Steel | 24°C |
40 piw | 180° Peel strength | 30,240 min | 24°C | Canvas/Steel | 24°C |
20 piw | 180° Peel strength | 30,240 min | 24°C | Canvas/Steel | -1°C |
16 piw | 180° Peel strength | 30,240 min | 24°C | Canvas/Steel | 66°C |
9 piw | 180° Peel strength | 30,240 min | 24°C | Canvas/Steel | 82°C |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
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152 psi | Overlap shear strength | 30,240 min | 20 to 25°C Room Temperature | 1/8 in. - 1/8 in. Birch | -1°C |
200 psi | Overlap shear strength | 30,240 min | 20 to 25°C Room Temperature | 1/8 in. - 1/8 in. Birch | 24°C |
20 psi | Overlap shear strength | 30,240 min | 20 to 25°C Room Temperature | 1/8 in. - 1/8 in. Birch | 66°C |
9 psi | Overlap shear strength | 30,240 min | 20 to 25°C Room Temperature | 1/8 in. - 1/8 in. Birch | 82°C |
Flash Point Test Methods
Flash Point | Test Method |
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-18.0°C | Closed up |
% Solids Test Methods
% Solids | Test Method |
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46 to 55 % | By weight |