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3M™ Scotch-Weld™ Acrylic Adhesive DP820

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    • Creates strong bond with minimal or no surface prep required
    • Resists many chemicals, water, humidity, and corrosion
    • Formulated to bond multi-material assemblies such as plastics, thermoplastics, composites, and metals, including oily metals
    • Medium viscosity allows controlled dispensing
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    Specifications
    Adhesion Strength
    320 oz/in
    Adhesive Type
    Acrylic
    Applications
    Impact resistant, Mounting and Trim Attachment, Panel to Frame/Stiffner to Panel Assembly, Small Joint Assembly, Structural Bonding, Vibration resistant
    Brand
    Scotch-Weld™
    Colour
    Yellow
    Design Challenges
    Impact & Shock Absorption, Noise Vibration & Harshness Control NVH
    Full Cure
    24-48 Hours @ 72 F (22 C)
    Hardness
    75 Shore D, 79 Shore D
    Indoor/Outdoor
    Both
    Industries
    Construction, Consumer Goods, Electronics, General Industrial, Metalworking, Signage, Specialty Vehicle, Transportation, Woodworking
    Maximum Operating Temperature (Celsius)
    93 Degree Celsius
    Maximum Operating Temperature (Fahrenheit)
    175 Degree Fahrenheit
    Mix Ratio Volume Base:Accelerator
    1 : 1
    Open Time
    15 minutes @ 72 F (22 C)
    Physical Form
    Flowable Liquid
    Position
    Best
    Product Form
    Cartridge
    Product Type
    Acrylic Adhesive
    Set Time
    10 to 30 Minute
    Shear Strength at 72 Degrees F (22 Degrees C)
    3200 Pound-Force Per Square Inch
    Shelf Life in Months (from date of manufacture)
    6
    Specific Gravity
    1.00
    Storage Temperature
    72 Degree Fahrenheit, <80 Degree Fahrenheit
    Substrate
    Glass, Glass & Ceramics, HSE Plastics and Glass, Metal, Oily, Paint, Paints (Powder Coat, Painted Metal, Composite Panel), Plastics (ABS, PVC, Acrylic), Plastics (High Performance Nylon), Plastics: HSE, MSE (ABS, Acrylic, Polycaronate, Nylon), Smooth, Wood, Wood & Hardboard
    Substrate 1
    Glass, Glass & Ceramics, Metal, Oily, Paint, Paints (Powder Coat, Painted Metal, Composite Panel), Plastic, Easy-to-Bond (HSE), Plastics (ABS, PVC, Acrylic), Plastics (High Performance Nylon), Plastics: HSE, MSE (ABS, Acrylic, Polycaronate, Nylon), Smooth, Wood, Wood & Hardboard
    Substrate 2
    Glass, HSE Plastics and Glass, Metal, Oily, Paint, Paints (Powder Coat, Painted Metal, Composite Panel), Plastics: HSE, MSE (ABS, Acrylic, Polycaronate, Nylon), Smooth, Wood
    Units per Case
    12, 6
    Viscosity
    Self-Leveling
    Viscosity Range (cps) at Room Temperature
    Base: 70,000, Accelerator: 45,000
    Volume
    1.6 Fluid Ounce (US), 13.52 Fluid Ounce (US)
    Volume (metric)
    400 Millilitre, 47 Millilitre
    Work Time
    20 Minutes
    Details
    • Creates strong bond with minimal or no surface prep required
    • Resists many chemicals, water, humidity, and corrosion
    • Formulated to bond multi-material assemblies such as plastics, thermoplastics, composites, and metals, including oily metals
    • Medium viscosity allows controlled dispensing
    • Strong adhesive can replace screws, rivets, and welding

    3M™ Scotch-Weld™ Acrylic Adhesive DP820 is a two-part acrylic adhesive specially formulated to bond many plastics, metals, and oily metals.

    Structural bonds can be achieved without special surface treatments such as chemical etching, plasma, flame, corona treatment or priming. Simply wipe the surfaces with isopropanol to remove mould release agents, dust dirt, etc. 3M™ Scotch-Weld™ Adhesive DP820 also bonds metals and most other plastics. The mix ratio for our 3M™ Scotch-Weld™ Acrylic Adhesive DP820 is 1:1 for quick, precise dispensing. With an applied 15-minute work life there is some opportunity for positioning and adjustments after the adhesive is applied. This adhesive reaches handling strength in approximately 40 minutes and is fully cured in 48 hours (at 72°F/22°C). Acrylic adhesives are two-part methyl methacrylate adhesives (MMA) that provide excellent bond strength and durability. Often referred to as epoxy adhesives or epoxy glue, acrylics actually belong to a separate chemical family with their own unique characteristics. Acrylic glues have several features that make them easier to use, including a faster cure speed, higher tolerance for oily or unprepared bonding surfaces and the ability to bond a wide variety of materials, including nearly all plastics. Newer acrylic adhesive formulations are room temperature stable with a long shelf life.

    Suggested Applications

    • Metalworking such as HVAC, appliance, sporting goods, and specialty vehicles
    • Sign manufacturing such as panel to frame bonding, trim attachment, letter bonding, and frame assembly
    • Bonding plastics, composites, and powder coats to metal
    • Typically used for larger parts where a longer open time is needed for assembly
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