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Description for 3M 3779
High heat resistance • High strength • Good fuel and oil resistanceChemical Resistance Good Fuel Resistance , Good Oil Resistance Application Type Bond, Pot, Fixture 1 Part or 2 Part 1-Part Material Form Bulk Substrate Acrylic, Ceramic, Fabric, Glass, Paper, Plastic, Polyester, Polypropylene, PVC, Rubber, Wood, Polyamide, Phenolic, Flexible Vinyl, Epoxy, Rigid foam, ABS, Leather, Cardboard, Uncoated Chipboard, Vinyl, Epoxy Board, Flexible foam, Uncoated Cardboard, Coated Chipboard, Coated Cardboard Industry Electrical, Printed circuit Boards, Electronics, Instruments, Wires, Printed Wiring Board, Bundle Wires Manufacturer 3M Chemistry Hot melt Cure Method Hot melt Application Temperature (°F) 351 to 385 Viscosity (cPs) 7,000 Color Amber High Temperature Resistance (°C) 149, High heat resistance Density (g/cm³) 0.990 Key Specifications FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): Applicable 21 CFR 175.105, UL 94 - VO -
Technical Data for 3M 3779
Overview
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Chemical Resistance
- Chemical Resistance - Good Fuel Resistance , Good Oil Resistance
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Application Type
- Adhesive - Bond, Fixture
- Pottant / Encapsulant - Pot
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1 Part or 2 Part
- 1-Part
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Material Form
- Bulk
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Substrate
- Ceramic
- Foam - Flexible foam, Rigid foam
- Leather
- Glass
- Plastic
- Acrylic (PMMA) - Acrylic
- Polypropylene
- Polyvinyl chloride (PVC) - PVC
- Polyamide
- Phenolic
- Vinyl - Flexible Vinyl
- Epoxy - Epoxy Board
- ABS
- Rubber
- Wood - Uncoated Chipboard, Coated Chipboard
- Fabric
- Paper - Cardboard, Uncoated Cardboard, Coated Cardboard
- Polyester
- Other - Beadboard, Styrene, Canvas
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Industry
- Electronics - Electrical, Instruments, Printed Wiring Board, Bundle Wires, Wires
- Printed Circuit Board (PCB) - Printed circuit Boards
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Chemistry
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Cure Method
- Hotmelt - Hot melt
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Color
- Red - Amber
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Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - UL 94 - VO
- FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency) : 175.105 - Applicable 21 CFR 175.105
Specifications
Cure Specs
Application Temperature (°F) 351 to 385 Viscosity (cPs) 7,000 Test Method Set Time (min) Quick setting for potting even at great depth Softening Point (°C) 163 Test Method Work / Pot Time (min) 0.42 Test Method Bond Strength
General Bond Strength (psi) High Peel Strength (piw) 18 Test Method Shear Strength (psi) 700 Test Method Tensile Strength (psi) 2,100 Test Method Material Resistance
High Temperature Resistance (°C) 149, High heat resistance Test Method Impact Resistance 22 (IN.-LBS) Test Method Hardness
Elongation (%) 300 Test Method Other Properties
Flash Point (°F) 550.4, 550.0 Test Method % Solids (%) 100 Density (g/cm³) 0.990 Business Information
Shelf Life Details When stored at the recommended conditions, this product has a shelf life of 2 years after 3M ships the product to a customer or distributor. Shelf Life Temperature (°F) 120 Shelf Life (mon) 24 -
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Best Practices for 3M 3779
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Surface Preparation
Surfacesmust be clean, dry and dust free. Wipe with a solvent such as isopropyl alcohol for plastic, metal and glass substrates to remove oil and dirt.
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Application
3M™Hot Melt Adhesives are designed for application with a 3M™ Hot Melt Applicators. Read and follow the precautions and directions for use in the user’s manual before operating the applicator. 3M™ Hot Melt Adhesives are applied at 350- 385°F. Adhesives yield approximately 430 linear feet per pound of adhesive when extruded as a 1/8” diameter semi-circular bead. Extruded bead sizes can be customized using 3M™ applicator tips.
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Comparable Materials for 3M 3779
Spec Engine® Results
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Softening Point Test Methods
Softening Point | Unit Test Method |
---|---|
163°C | ASTM E28-67 |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
---|---|---|
7,000 cPs | Brookfield Thermocel Viscometer in Centipoise using a #27 Spindle @ 10 RPM | 191°C |
Work / Pot Time Test Methods
Work / Pot Time | Test Method |
---|---|
0.42 min | 1/8" semicircular bead, Douglas Fir to Douglas Fir. |
Peel Strength Test Methods
Peel Strength | Substrate | Test Temperature |
---|---|---|
18 piw | Canvas | 22°C |
Tensile Strength Test Methods
Tensile Strength | Test Temperature |
---|---|
2,100 psi | 22°C |
Shear Strength Test Methods
Shear Strength | Substrate | Test Temperature |
---|---|---|
700 psi | Douglas Fir | 22°C |
High Temperature Resistance Test Methods
High Temperature Resistance | Test Method |
---|---|
149°C | Temperature at which adhesive fails |
High heat resistance |
Impact Resistance Test Methods
Impact Resistance | Test Method |
---|---|
22 (IN.-LBS) | IMPACT RESISTANCE (IN.-LBS.) 72°F (22°C) |
Elongation Test Methods
Elongation | Test Method |
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300 % |
Flash Point Test Methods
Flash Point | Test Method |
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288.0°C | ASTM D 92-72 |
287.8°C |