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Description for 3M 1386
A one-part, 100% solids, thermosetting liquid adhesive. Higher impact, peel and bond strength properties. Application by knife coating, trowel, roller coating and high pressure injection methods.Chemical Resistance Salt Spray, Chemical Resistance: Fluid Resistance: .8% (Rust Inhibitor) 99.2% Tap Water, Type III Hydrocarbon Fluid, Chemical Resistance: Fluid Resistance: 1.2% (Radiator Conditioner) 98.9% Tap Water, Chemical Resistance, Chemical Resistance: Fluid Resistance: 26% Methyl Alcohol 74% Tap Water, Chemical Resistance: Fluid Resistance: 28.6%Ethylene Glycol 71.4% Tap Water Blend, Chemical Resistance: Fluid Resistance: Tap Water Application Type Bond 1 Part or 2 Part 1-Part Material Form Liquid Substrate Etched Aluminum, Metal, Epoxy, Aluminum Manufacturer 3M Chemistry Epoxy, Epoxy: Modified Epoxy Resin Application Method Trowel Cure Method Heat Cure Temperature (°C) 176 to 178 Cure Time (min) 59 to 61 Viscosity (cPs) 75,000 to 175,000 Color Light Cream Creep Resistance Creep resistance High Temperature Resistance (°C) 121, 82 Low Temperature Resistance (°C) -57, -55 Density (g/cm³) 9.4 to 9.8 (weight (lbs/gal)) Key Specifications Mil-Spec (United States Military Standard): A-8623A: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III, Mil-Spec (United States Military Standard): MMM-A-134: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III, Mil-Spec (United States Military Standard): MMM-A-132: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III -
Technical Data for 3M 1386
Overview
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Chemical Resistance
- Chemical Resistance : Fluid Resistance : Water Resistance - .8% (Rust Inhibitor) 99.2% Tap Water, 1.2% (Radiator Conditioner) 98.9% Tap Water, 26% Methyl Alcohol 74% Tap Water, 28.6%Ethylene Glycol 71.4% Tap Water Blend, Tap Water
- Chemical Resistance - Salt Spray, Type III Hydrocarbon Fluid
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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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Application Method
- Roll - Roller Coating
- Spatula/Trowel - Trowel
- Other - Knife coating, Pump , High Pressure Injection Methods
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Cure Method
- Heat
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Color
- Off-White - Light Cream
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Key Specifications
- Mil-Spec (United States Military Standard) : A-8623A : Type III - MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III
- Mil-Spec (United States Military Standard) : MMM-A-134 : Type III - MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III
- Mil-Spec (United States Military Standard) : MMM-A-132 : Type III - MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III
Specifications
Cure Specs
Cure Temperature (°C) 176 to 178 Cure Time (min) 59 to 61 Viscosity (cPs) 75,000 to 175,000 Test Method Work / Pot Time (min) 525,600 Bond Strength
Structural/Load-Bearing Structural General Bond Strength (psi) High Peel Strength (piw) 10 Test Method Shear Strength (psi) 5,500, 5,500, 5,300, 4,300, 3,500, 2,500, 2,500, 1,250, None, 2,500, 2,500, 1,500, None Test Method Cleavage Strength (psi) 1500 (lbs) Test Method Impact Strength (psi) Higher, 5 (ft./lbs.), 45 (ft./lbs) Test Method Tensile Strength (psi) 8,293, 10,189, 3,178 Test Method Material Resistance
Creep Resistance Creep resistance Environmental Resistance Accelerated Weathering, Environmental resistance High Temperature Resistance (°C) 121, 82 Impact Resistance Impact resistance Low Temperature Resistance (°C) -57, -55 Conductivity
Dissipation Factor 0.05700, 0.05900, 0.10100, 0.12900, 0.13800, 183.00000 Test Method Dielectric Strength (V/mil) 400 Dielectric Constant 5.11, 5.28, 5.55, 6.07, 7.35, 8.37 Test Method Other Properties
Coefficient of Thermal Expansion (CTE) 4.65e-5, 4.96e-5 Test Method % Solids (%) 100 Density (g/cm³) 9.4 to 9.8 (weight (lbs/gal)) Business Information
Shelf Life Details Store 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 at 40°F (4°C) or lower for optimum storage life. 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 should be permitted to thoroughly warm to room temperature before opening in order to prevent moisture condensation of the adhesive surface. Rotate stock on a “first in-first out” basis. 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 has a shelf life of 15 months from date of shipment when stored at 40°F (4°C) and 24 months from date of shipment when stored at 0°F (-17°C) or below in original, unopened container., Store 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 at 40°F (4°C) or lower for optimum storage life. 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 should be permitted to thoroughly warm to room temperature before opening in order to prevent moisture condensation of the adhesive surface. Rotate stock on a “first in-first out” basis. 3M™ Scotch-Weld™ Epoxy Adhesive EC-1386 has a shelf life of 15 months from date of shipment when stored at 40°F (4°C) and 24 months from date of shipment when stored at 0°F (-17°C) or below in original, unopened container. Shelf Life Temperature (°F) 39, <1 Shelf Life Type From Date of Shipment , From Date of Shipment Shelf Life (mon) 15, 24 -
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Best Practices for 3M 1386
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Surface Preparation
A thoroughly cleaned, dry, grease free surface is essential for maximum performance. Cleaning methods which will produce a break-free water film on metal surfaces are generally satisfactory. Surface preparations should be fully evaluated with the adhesive, especially if resistance to specific environments are anticipated.
See Vendor Technical Data Sheet for more info.
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Application
Appropriate application equipment can enhance adhesive performance. The user is responsible for evaluating application equipment in light of the user’s particular purpose and method of application.
Scotch-Weld EC-1386 can be applied by a spatula, knife coat, notched trowel, or by extruding into places. Standard equipment is available which allows pumping directly from five-gallon pails. When extruded through a Pyles-Semco cartridge (3/32" orifice 70 psi line pressure), the delivery rate at 72°F (22°C) is approximately 20 grams/minute. A lower viscosity for ease of application can be obtained by warming Scotch-Weld EC-1386 to 100 - 120°F (38 - 49°C). Note: Scotch-Weld EC-1386 may start to thicken if held at 120°F (49°C) for more than 4 hours.
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Curing
The pressure needed during the cure of Scotch-Weld EC-1386 is typically that required to keep parts in alignment and to overcome distortion and thermal expansion in the adherends.
The cure temperature may be varied from 330 to 500°F (166 to 260°C) depending on the materials being bonded, equipment available and bond properties desired. Scotch-Weld EC-1386 will wet the surface to which it has been applied. Heating at temperatures above 325°F (163°C) will chemically convert the adhesive into a high strength solvent-resistant bond.
Cure time depends on the cure temperature used, methods of heat application, production limitations and bond properties required. Since no two bonding operations are exactly alike, it is suggested that a few simple experiments be conducted, varying both temperature and cure time, to determine optimum conditions for the particular application. Figure 1 is a guide from which an approximate cure cycle can be taken for various cure times or temperatures.
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Clean-Up
Excess adhesive and equipment may be cleaned up, prior to curing with Ketone type solvents.*
*Note: When using solvents extinguish all ignition source and follow manufacturer’s precautions and directions for use for handling such materials.
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Viscosity Test Methods
Viscosity | Test Method |
---|---|
75,000 to 175,000 cPs | Brookfield RVF No. 7 Spindle @ 4 rpm |
Cleavage Strength Test Methods
Cleavage Strength | Substrate | Test Temperature | Test Method |
---|---|---|---|
1500 (lbs) | Aluminum to Aluminum | 22 to 24°C | ASTM D 1062-49T, MIL-A-8623 |
Impact Strength Test Methods
Impact Strength | Substrate | Test Temperature | Test Method |
---|---|---|---|
Higher | Aluminum to Aluminum | 22 to 24°C | Cohesive failure, FED STD-MMM-A-175 |
5 (ft./lbs.) | Aluminum to Aluminum | 22 to 24°C | Cohesive failure, FED STD-MMM-A-175 |
45 (ft./lbs) | 22 to 26°C | Cohesive Failure, Impact strength was measured according to ASTM D 950-54 (Izod Impact Tester 30 lbs. wt.) methods using 1/2 in. x 1/2 in. square specimens of 2024 T3 aluminum.Scotch-Weld EC-1386 was applied in a thin coat (.003 in. x .005 in. thick) on both surfaces. |
Peel Strength Test Methods
Peel Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
---|---|---|---|---|---|
10 piw | T-peel strength | 60 min | 177°C | Etched Aluminum | 22 to 24°C |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature | Test Temperature | Test Method |
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8,293 psi | 60 min | 177°C | -40°C | Cure Cycle: 1 hour @ 350°F (177°C) |
10,189 psi | 60 min | 177°C | 24°C | Cure Cycle: 1 hour @ 350°F (177°C) |
3,178 psi | 60 min | 177°C | 82°C | Cure Cycle: 1 hour @ 350°F (177°C) |
Shear Strength Test Methods
Shear Strength | Cure Time | Cure Temperature | Substrate | Test Temperature | Test Method |
---|---|---|---|---|---|
5,500 psi | 40 to 60 min | 24°C | 177°C | ||
5,500 psi | 20 to 30 min | 24°C | 191°C | ||
5,300 psi | 15 to 20 min | 24°C | 204°C | ||
4,300 psi | 10 to 15 min | 24°C | 218°C | ||
3,500 psi | 5.00 to 7 min | 24°C | 232°C | ||
2,500 psi | Aluminum to Aluminum | -54 to -56°C | Cohesive failure | ||
2,500 psi | Aluminum to Aluminum | 22 to 24°C | Cohesive failure | ||
1,250 psi | Aluminum to Aluminum | 81 to 83°C | Cohesive failure | ||
None | Aluminum to Aluminum | 120 to 122°C | Cohesive failure | ||
2,500 psi | Aluminum to Aluminum | -54 to -56°C | Cohesive failure | ||
2,500 psi | Aluminum to Aluminum | 22 to 24°C | Cohesive failure | ||
1,500 psi | Aluminum to Aluminum | 81 to 83°C | Cohesive failure | ||
None | Aluminum to Aluminum | 120 to 122°C | Cohesive failure |
Dielectric Constant Test Methods
Dielectric Constant | Temperature |
---|---|
5.11 | 23°C |
5.28 | 60°C |
5.55 | 90°C |
6.07 | 105°C |
7.35 | 120°C |
8.37 | 135°C |
Dissipation Factor Test Methods
Dissipation Factor | Temperature |
---|---|
0.05700 | 23°C |
0.05900 | 60°C |
0.10100 | 90°C |
0.12900 | 105°C |
0.13800 | 120°C |
183.00000 | 135°C |
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) | CTE Temperature (°C) |
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4.65e-5 | -40 to 44°C |
4.96e-5 | 44 to 116°C |