3M 3748 VO

3M 3748 VO Datasheet
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  • Description for 3M 3748 VO

    A tough, flexible, thermoplastic hot melt. Self-extinguishing, meets UL 1410 requirements.

    *See Terms of Use Below

    Application Type Bond, Pottant / Encapsulant, Sealing, Fixture
    1 Part or 2 Part 1 Part
    Material Form Sticks
    Substrate Aluminum, Ceramic, Glass, Metal, ABS, Polycarbonate, Polypropylene, Douglas Fir , FRP, Polyethylene, Polyolefin, ThermoPlastic
    Manufacturer 3M
    Chemistry Hot melt, Polyolefin
    Cure Method Hot melt
    Viscosity (cPs) 8,500, 5,000, 3,300, 5,500
    Color Light Yellow
    Chemical Resistance 1, 1, 1 - trichloroethylene, Acetone, Freon® TF, Freon® TMC, Isopropyl Alcohol, RMA Flux
    High Temperature Resistance (°C) 52, 25, High, 79
    Low Temperature Resistance (°C) -40, -100, -20
    Other Resistance Good thermal shock resistance
    Key Specifications UL94 - VO; UL 1410, Mil-Spec (United States Military Standard): Mil S-46163
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  • Technical Data

    Overview
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    Specifications
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Work / Pot Time Test Method
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Shear Strength Type Cure Time Cure Temperature Cure Humidity Substrate Test Temperature Test Method
275 psi 22°C On Douglas Fir 22°C
215 psi Overlap shear strength 1,440 min 22°C 50 % FR-4 to FR-4 21°C 3M TM C 3096, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap and 13 mil wire spacer to set bond line thickness. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are pulled in shear at a separation bond speed of 2 inch a minute recording strength at failure.
275 psi Overlap shear strength 1,440 min 22°C 50 % Fir to Fir 21°C 3M TM C 3096, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap and 13 mil wire spacer to set bond line thickness. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are pulled in shear at a separation bond speed of 2 inch a minute recording strength at failure.
250 psi Overlap shear strength 1,440 min 22°C 50 % Polypropylene to Polypropylene 21°C 3M TM C 3096, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap and 13 mil wire spacer to set bond line thickness. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are pulled in shear at a separation bond speed of 2 inch a minute recording strength at failure.
220 psi Overlap shear strength 1,440 min 22°C 50 % Polyethylene to Polyethylene 21°C 3M TM C 3096, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap and 13 mil wire spacer to set bond line thickness. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are pulled in shear at a separation bond speed of 2 inch a minute recording strength at failure.
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200 psi 22°C
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Peel Strength Type Substrate Test Temperature Test Method
15 piw On canvas 22°C
Good
38 piw 180° Peel strength Wire Mesh to FR-4 C 3168, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap shear configuration. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are subjected to 2 lbs. per square inch load at 100°F (49°C) for 30 minutes. Temperature of the bond line is raised every 30 minutes until failure. Heat resistance recorded is the last temperature prior to bond failure.
35 piw 180° Peel strength Wire Mesh to PP C 3168, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap shear configuration. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are subjected to 2 lbs. per square inch load at 100°F (49°C) for 30 minutes. Temperature of the bond line is raised every 30 minutes until failure. Heat resistance recorded is the last temperature prior to bond failure.
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26 piw 180° Peel strength Wire Mesh to Fir C 3168, 1" x 4" Douglas Fir specimens are bonded with hot melt adhesive using a 1" overlap shear configuration. Bonds are then conditioned for 24 hours at 70°F (22°C), 50% relative humidity before testing. Bonds are subjected to 2 lbs. per square inch load at 100°F (49°C) for 30 minutes. Temperature of the bond line is raised every 30 minutes until failure. Heat resistance recorded is the last temperature prior to bond failure.
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52°C
25°C
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79°C Temperature at which adhesive fails
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4.5e17 (ohms/sq.) ASTM D 257
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6.0e17 (ohms/cm) ASTM D 257
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Shore D Hardness Shore Hardness Test Method Hardness Temperature
26 ASTM D 2240 25°C Room Temperature
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Coefficient of Thermal Expansion (CTE) CTE Temperature (°C) CTE Test Method
-34.0e-6 (unit/unit /°C) -100 to -40°C by TMA
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