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Description for 3M 3797
High ball and ring • Low viscosity • Good for electrical pottingApplication Type Bond, Pot, Fixture 1 Part or 2 Part 1-Part Material Form Sticks Substrate Aluminum, Ceramic, Glass, Polypropylene, Douglas fir, Phenolics, Epoxy Board Industry Electrical, Printed circuit Boards, Cable strain relief, Electronics, Instruments, Easily secure Wires, Bundle Wires Manufacturer 3M Chemistry Hot melt Cure Method Hot melt Application Temperature (°F) 351 to 385 Viscosity (cPs) Low, 2,650 Color Off White High Temperature Resistance (°C) 77 Key Specifications FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): Applicable 21 CFR 175.105 , UL 94 - V2 -
Technical Data for 3M 3797
Overview
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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
- Stick - Sticks
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Substrate
- Ceramic
- Glass
- Aluminum
- Polypropylene
- Phenolic - Phenolics
- Epoxy - Epoxy Board
- Wood - Douglas fir
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Industry
- Electronics - Electrical, Instruments, Bundle Wires, Easily secure Wires
- Printed Circuit Board (PCB) - Printed circuit Boards
- Cable - Cable strain relief
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Chemistry
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Application Method
- Dispenser - Application equipment
- Flow - Flow equipment
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Cure Method
- Hotmelt - Hot melt
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Color
- Off-White - Off White
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Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - UL 94 - V2
- 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) Low, 2,650 Test Method Softening Point (°C) 151 Test Method Work / Pot Time (min) 0.50 Test Method Bond Strength
Peel Strength (piw) 10 Test Method Shear Strength (psi) 350 Test Method Tensile Strength (psi) 283 Test Method Material Resistance
High Temperature Resistance (°C) 77 Test Method Hardness
Elongation (%) 98 Other Properties
Flash Point (°F) 570.2 % Solids (%) 100 -
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Best Practices for 3M 3797
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Comparable Materials for 3M 3797
Spec Engine® Results
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3748 VO(3M)A tough, flexible, thermoplastic hot melt, 100% solids adhesive which exhibits good peel adhesion and thermal shock properties along with higher heat resistance.
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Technomelt PA 7901(Henkel)A low viscosity, high melting adhesive used extensively for potting and encapsulating in the electronics industry.
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Softening Point Test Methods
| Softening Point | Unit Test Method |
|---|---|
| 151°C | ASTM E-28-99 |
Viscosity Test Methods
| Viscosity | Test Method | Temperature |
|---|---|---|
| Low | ||
| 2,650 cPs | Brookfield Thermosel Viscometer in Centipoise. | 191°C |
Work / Pot Time Test Methods
| Work / Pot Time | Test Method |
|---|---|
| 0.50 min | 1/8" semicircular bead, Douglas Fir to Douglas Fir. |
Peel Strength Test Methods
| Peel Strength | Substrate | Test Temperature |
|---|---|---|
| 10 piw | Canvas | 22°C |
Tensile Strength Test Methods
| Tensile Strength | Test Temperature |
|---|---|
| 283 psi | 22°C |
Shear Strength Test Methods
| Shear Strength | Substrate | Test Temperature |
|---|---|---|
| 350 psi | Douglas Fir | 22°C |
High Temperature Resistance Test Methods
| High Temperature Resistance | Test Method |
|---|---|
| 77°C | Temperature at which adhesive fails |
