• Description for 3M 3524

    A two-part flame retardant epoxy. It can be used for void filling, edge sealing, and as an abradable compound in aircraft engines.

    *See Terms of Use Below

    Application Type Bond, Seal
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Industry Aerodynamic flushness, Aircraft engines, Aircraft engines
    Manufacturer 3M
    Chemistry Epoxy
    Application Method Spatula, Trowel
    Cure Method Base/Accelerator
    Cure Temperature (°C) 24
    Cure Time (min) 2,880
    Color Blue, Off-white
    Density (g/cm³) 29.3 - 31.2 (lbs./ft.3)
    Key Specifications Meets the flammability requirements of F.A.R. 25.853 (a) and (b).
  • Technical Data for 3M 3524

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Liquid
    • Industry
      • Aerospace - Aerodynamic flushness
      • Aircraft - Aircraft engines
      • Engine - Aircraft engines
      • Other - Void filling, Edge sealing, Reinforces honeycomb, Inserts
    • Chemistry
    • Application Method
      • Spatula/Trowel - Spatula, Trowel
    • Cure Method
      • 2-Part Cure - Base/Accelerator
    • Color
      • Blue
      • Off-White
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - Meets the flammability requirements of F.A.R. 25.853 (a) and (b).
    Specifications
    Cure Specs
    Cure Temperature (°C) 24
    Cure Time (min) 2,880
    Work / Pot Time (min) 90 Test Method
    Mix Ratio 1:1 (by volume), 100:94 (by weight)
    Bond Strength
    Compressive Strength (psi) 2,200, 290, 200, 190 Test Method
    Material Resistance
    Impact Resistance Impact resistance
    Hardness
    Shore D Hardness 55 (psi) Test Method
    Modulus (psi) 62,000 Test Method
    Other Properties
    Glass Transition Temp (Tg) (°C) 54 Test Method
    % Solids (%) 100
    Density (g/cm³) 29.3 - 31.2 (lbs./ft.3) Test Method
    Business Information
    Shelf Life Details Storage Stability – Store product at 80°F (27°C) or below. Rotate stock on first in - first out basis.;Standard shelf life for 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 B/A and Off-White B/A is 6 months from date of shipment when stored @ 80°F (27°C) or below.
    Shelf Life Temperature (°F) <80
    Shelf Life Type From date of shipment
    Shelf Life (mon) 6
  • Best Practices for 3M 3524

    *See Terms of Use Below

    1. Surface Preparation

      A clean dry grease free surface is essential for maximum performance.

      When using solvents for cleanup, follow the manufacturer’s precautions and directions for use for handling such materials.

    2. Application

      Scotch-Weld EC-3524 B/A compound may be applied by spatula or trowel. Apply by working the material in place to reduce internal voids, and allow to set for two hours before finishing the surface. Large masses of material should be avoided until user performs suitable tests to determine the possibility of an exothermic reaction.

      Scotch-Weld EC-3524 B/A compound will stick to rubber gloves. Cover rubber gloves with lint free cotton gloves for best handling.

    3. Mixing

      3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 B/A or Off-White B/A may be mixed by hand or machine until a uniform color is obtained. Do not mix any more than can be used within the work life of the material. Work life of 200g of Scotch-Weld EC-3524 B/A is approximately 1.5 hours. Work life of larger quantities will be shorter. For industrial mixing applications, use a mixer that will not crush the glass microspheres contained in the compound.

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    *See Terms of Use Below

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Work / Pot Time Test Methods
Work / Pot Time Test Method
90 min approximately 200g
Compressive Strength Test Methods
Compressive Strength Cure Time Cure Temperature Test Temperature Test Method
2,200 psi 2,880 min 24°C 24°C 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block
290 psi 2,880 min 24°C 121°C 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block
200 psi 2,880 min 24°C 149°C 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block
190 psi 2,880 min 24°C 177°C 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block
Modulus Test Methods
Modulus Test Method
62,000 psi at 75°F (24°C)
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
55 (psi) at 75°F (24°C)
Density Test Methods
Density Test Method
29.3 - 31.2 (lbs./ft.3) 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the_x00D_ cured block.
Glass Transition Temp (Tg) Test Methods
Glass Transition Temp (Tg) Glass Transition Temperature (Tg) Test Method
54°C 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the_x00D_ cured block.