Bostik 940A Fast Set Adhesive/Sealant Datasheet Bostik 940A Fast Set Adhesive/Sealant

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  • Description for Bostik 940A Fast Set Adhesive/Sealant

    One component; fast setting hybrid polymer; UV resistant; superior adhesion to porous and non-porous surfaces; long open time.

    *See Terms of Use Below

    Application Type Bond, Seal
    1 Part or 2 Part 1-Part
    Material Form Paste
    Substrate Aluminum, FRP, Copper, Glass, Polyester, PVC, painted or lacquered wood., Stainless Steel, Porous, Nonporous Substrates, Fiberglass, Brass, Zinc, Galvanized steel, EPDM rubber, Galvanized steel
    Industry Marine
    Manufacturer Bostik
    Chemistry SMP (Silyl Modified Polymer)
    Cure Method Room Temperature Cure
    Application Temperature (°F) 40 to 95
    Cure Temperature (°C) 25, 25
    Cure Time (min) 1,440 to 2,880, 20,160
    High Temperature Resistance (°C) 100, Outstanding
    Low Temperature Resistance (°C) Outstanding, -40

  • Technical Data for Bostik 940A Fast Set Adhesive/Sealant

    *See Terms of Use Below

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Paste
    • Substrate
    • Industry
    • Chemistry
      • Silyl Modified Polymer (SMP) / MS Polymer - SMP (Silyl Modified Polymer)
    • Application Method
      • Dispenser - Gun
    • Cure Method
      • Room Temperature / Air Dry - Room Temperature Cure
    Specifications
    Cure Specs
    Application Temperature (°F) 40 to 95
    Cure Temperature (°C) 25, 25 Test Method
    Cure Time (min) 1,440 to 2,880, 20,160 Test Method
    Set Time (min) Fast
    Tack Free Time (min) 35 Test Method
    Work / Pot Time (min) Longer, 45 Test Method
    Bond Strength
    General Bond Strength (psi) Superior
    Green Strength (psi) Excellent, 2.3 (lbs. - force/ft2) Test Method
    Tensile Strength (psi) 400, 450, 375 Test Method
    Material Resistance
    UV Resistance Excellent
    Environmental Resistance Excellent
    High Temperature Resistance (°C) 100, Outstanding
    Low Temperature Resistance (°C) Outstanding, -40
    Hardness
    Shore A Hardness 55 Test Method
    Elongation (%) 225 Test Method
    Flexibility Flexible, Permanent elastic
    Other Properties
    Specific Gravity 1.4 (g/ml) Test Method
    Business Information
    Shelf Life Details When stored between 40°F to 80°F (5°C to 27°C), Bostik® Marine 940A has a shelf life 12 months (sausages). Expiration date determined from the lot number printed on each sausage.
    Shelf Life Temperature (°F) 41 to 81
    Shelf Life (mon) 12

  • Best Practices for Bostik 940A Fast Set Adhesive/Sealant

    *See Terms of Use Below

    1. Clean-Up

      Use Bostik® Hand & Tool Towels to clean excess sealant from all surfaces and tools while still uncured. Remove cured sealant carefully from surfaces using appropriate mechanical methods.

  • Comparable Materials for Bostik 940A Fast Set Adhesive/Sealant

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    Spec Engine® Results

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      MS359A Grey(PermaBond)

      A single-part, room temperature curing MS polymer adhesive. It is ideal for use on a wide variety of substrate materials and is ideal for potting and sealing electronic components.

    • WEICON
      Flex 310 M Classic MS-Polymer(WEICON)

      Adhesive and sealant is strong, sandable, has outstanding aging stability and good resistance to UV rays. It is resistant to freshwater and salt water and is free of silicone, isocyanate, halogens or solvents.

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
25°C Uncured, @77°F/50%RH/0.125"
25°C AFTER 14 DAYS CURE AT 77°F AND 50% RH
Cure Time Test Methods
Cure Time Test Method
1,440 to 2,880 min Uncured, @77°F/50%RH/0.125"
20,160 min AFTER 14 DAYS CURE AT 77°F AND 50% RH
Tack Free Time Test Methods
Tack Free Time Test Method
35 min Uncured
Work / Pot Time Test Methods
Work / Pot Time Test Method
Longer
45 min Uncured
Green Strength Test Methods
Green Strength Test Method
Excellent
2.3 (lbs. - force/ft2) Uncured, @ 0.125-in. thick, without sag
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Substrate Test Method
400 psi 20,160 min 25°C 50 % Aluminum-to-Aluminum @ 100%., after 14 days cure at 77°F and 50% RH, 0.08", speed—2-in./min.
450 psi 20,160 min 25°C 50 % Aluminum-to-Aluminum @ Break, after 14 days cure at 77°F and 50% RH, 0.08", speed—2-in./min.
375 psi 20,160 min 25°C 50 % Aluminum-to-Aluminum 0.08", speed—2-in./min, AB481after 14 days cure at 77°F and 50% RH
Elongation Test Methods
Elongation Test Method
225 % after 14 days cure at 77°F and 50% RH
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
55 after 14 days cure at 77°F and 50% RH 25°C
Specific Gravity Test Methods
Specific Gravity Temperature Test Method
1.4 (g/ml) 25°C after 14 days cure at 77°F and 50% RH