3M DP270

3M DP270 Datasheet
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  • Description for 3M DP270

    Long worklife potting compound • 8-12 hrs. handling strength • Rigid epoxy • Many electronic applications

    *See Terms of Use Below

    Application Type Bond, Potting, Seal, Encapsulate
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Aluminum, Copper, Glass, Plastic, Rubber, Steel, Etched Aluminum
    Industry Coil, Electrical, Sensors, Transformer, Many electronic components, Glass diodes, Relay
    Manufacturer 3M
    Application Method Trowel, Spatula
    Cure Method 2-Part Cure
    Cure Temperature (°C) 23, 50, 80, 100
    Cure Time (min) 2,880, 240, 60, 30
    Viscosity (cPs) Low, 12,000
    Color Black, Clear
    Chemical Resistance 1, 1, 1-Trichlorethane, Acetone, Freon TF, Freon TMC, Isopropyl Alcohol, RMA Flux
    Relative Solvent Resistance Chemical Resistance: Solvent
    High Temperature Resistance (°C) 82, Good thermal shock resistance
    Low Temperature Resistance (°C) -55
    Light Refractive Index (RI) 1.6560
    Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): Meets UL 94 HB (File No. E61941), Mil-Spec (United States Military Standard): Mil S-46163

  • Technical Data for 3M DP270

    *See Terms of Use Below

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
      • Electronics - Electrical, Many electronic components, Glass diodes, Relay
      • Coils - Coil
      • Sensors
      • Transformers - Transformer
      • Industrial - Choke
    • Application Method
      • Dispenser - Flow equipment
      • Spatula/Trowel - Spatula, Trowel
    • Cure Method
      • 2-Part Cure
    • Color
      • Black
      • Clear / Transparent - Clear
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94 HB - Meets UL 94 HB (File No. E61941)
      • Mil-Spec (United States Military Standard): S-46163 - Mil S-46163
    Specifications
    Cure Specs
    Cure Temperature (°C) 23, 50, 80, 100 Test Method
    Cure Time (min) 2,880, 240, 60, 30 Test Method
    Viscosity (cPs) Low, 12,000 Test Method
    Fixture or Handling Strength Time (min) 480 to 720
    Tack Free Time (min) 180 Test Method
    Work / Pot Time (min) 70, Long, 60 to 70 Test Method
    Mix Ratio 1:1 (by volume), 1:0.85 (by weight)
    Bond Strength
    Structural/Load-Bearing High structural
    Peel Strength (piw) <2 Test Method
    Shear Strength (psi) 1,200 to 1,250, 2,450 to 2,500, 300 to 350, 1,750 to 1,800, 1,700 to 1,750 Test Method
    Compressive Strength (psi) 8,100 Test Method
    Material Resistance
    Non-Corrosive Noncorrosive
    Chemical Resistance 1, 1, 1-Trichlorethane, Acetone, Freon TF, Freon TMC, Isopropyl Alcohol, RMA Flux
    Relative Solvent Resistance Chemical Resistance: Solvent
    High Temperature Resistance (°C) 82, Good thermal shock resistance
    Low Temperature Resistance (°C) -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dissipation Factor 0.01800 Test Method
    Insulation Resistance (O) Insulation Resistance, 2e11 (ohms), 3e13 (ohms) Test Method
    Dielectric Strength (V/mil) 850 Test Method
    Dielectric Constant 3.50 Test Method
    Thermal Conductivity (W/m°K) 0.18, 0.426e3 (Cal./sec. - cm - °C), 0.18 Test Method
    Volume Resistivity (O) 4.1e14 (ohms/cm) Test Method
    Hardness
    Shore D Hardness Rigid, 83 Test Method
    Other Properties
    Glass Transition Temp (Tg) (°C) 43, 49 Test Method
    Light Refractive Index (RI) 1.6560 Test Method
    Coefficient of Thermal Expansion (CTE) 80e-6 (units/unit /°C), 180e-6 (units/unit /°C) Test Method
    Business Information
    Shelf Life Details Store product at 60-80°F (16-27°C) for maximum storage life.;These products when stored in original, unopened container have a shelf life of two years for bulk containers and 15 months in duo-pak containers., Store product at 60-80°F (16-27°C) for maximum storage life.;These products when stored in original, unopened container have a shelf life of two years for bulk containers and 15 months in duo-pak containers., These products when stored in original, unopened container have a shelf life of 18 months from date of manufacture.
    Shelf Life Temperature (°F) 61 to 81, 61 to 81, 61 to 81
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 24, 15, 18

  • Best Practices for 3M DP270

    *See Terms of Use Below

    1. Surface Preparation

      For high strength structural bonds, paint, oxide films, oils, dust, mold release agents and all other surface contaminants must be completely removed. However, the amount of surface preparation directly depends on the required bond strength and the environmental aging resistance desired by user.

      The cleaning methods are suggested for common surfaces: Steel: 1. Wipe free of dust with oil-free solvent such as acetone, isopropyl or alcohol solvents.

      2. Sandblast or abrade using clean fine grit abrasives.

      3. Wipe again with solvent to remove loose particles.

      4. If a primer is used, it should be applied within 4 hours after surface preparation.

      Aluminum: 1. Alkaline Degrease: Oakite 164 solution (9-11 oz./gallon water) at 190°F ± 10°F (88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold running water.

      2. Acid Etch: Place panels in the following solution for 10 minutes at 150°F ± 5°F (66°C ± 2°C).

      Sodium Dichromate: 4.1 - 4.9 oz./gallon, Sulfuric Acid, 66°Be: 38.5 - 41.5 oz./gallon, 2024-T3 aluminum (dissolved): 0.2 oz./gallon minimum, Tap water as needed to balance

      3. Rinse: Rinse panels in clear running tap water.

      4. Dry: Air dry 15 minutes

      force dry 10 minutes at 150°F ± 10°F (66°C ± 5°C).

      5. If primer is to be used, it should be applied within 4 hours after surface preparation.

      Plastics/Rubber: 1. Wipe with isopropyl alcohol.

      2. Abrade using fine grit abrasives.

      3. Wipe with isopropyl alcohol.

      Glass: 1. Solvent wipe surface using acetone or MEK.

      2. Apply a thin coating (0.0001 in. or less) of 3M™ Scotch-Weld™ Metal Primer EC3901 to the glass surfaces to be bonded and allow the primer to dry 60 minutes before bonding.

    2. Application

      For maximum bond strength apply product evenly to both surfaces to be joined.

      Application to the substrates should be made within 70 minutes. Larger quantities and/or higher temperatures will reduce this working time.

    3. Mixing

      For Duo-Pak Cartridges: If mixing of Part A and Part B is desired, attach the EPX applicator mixing nozzle to the duo-pak cartridge and begin dispensing the adhesive. For hand mixing, expel the desired amount of material and mix thoroughly to obtain a uniform color.

      EPX Applicator systems.

      Mix thoroughly by weight or volume in the proportions specified in the typical uncured properties section to obtain a uniform color.

      For Bulk Containers: Mix thoroughly by weight or volume in the proportions specified in the typical uncured properties section to obtain a uniform color.

    4. Curing

      Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until firm. Heat up to 200°F (93°C) will speed curing.

      Keep parts from moving during cure. Contact pressure necessary. Maximum shear strength is obtained with a 3-5 mil bond line.

    5. Clean-Up

      Excess uncured adhesive can be cleaned up with ketone type solvents.

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
23°C Fully Cured
50°C
80°C
100°C
Cure Time Test Methods
Cure Time Test Method
2,880 min Fully Cured
240 min
60 min
30 min
Tack Free Time Test Methods
Tack Free Time Tack Free Temperature
180 min 23°C
Viscosity Test Methods
Viscosity Temperature
Low
12,000 cPs 23°C
Work / Pot Time Test Methods
Work / Pot Time Temperature
70 min
Long
60 to 70 min 23°C
Shear Strength Test Methods
Shear Strength Type Cure Time Cure Temperature Substrate Test Temperature Test Method
1,200 to 1,250 psi Overlap shear strength 10,080 min 23°C Alum./Alum. (etched) -55°C ASTM D-1002-72
2,450 to 2,500 psi Overlap shear strength 10,080 min 23°C Alum./Alum. (etched) 23°C ASTM D-1002-72
300 to 350 psi Overlap shear strength 10,080 min 23°C Alum./Alum. (etched) 82°C ASTM D-1002-72
1,750 to 1,800 psi Overlap shear strength 10,080 min 23°C FR-4/FR-4 (MEK Wiped) 23°C ASTM D-1002-72
1,700 to 1,750 psi Overlap shear strength 10,080 min 23°C Copper/Copper (MEK Wiped) 23°C ASTM D-1002-72
Peel Strength Test Methods
Peel Strength Type Substrate Test Temperature Test Method
<2 piw 90° Peel strength Alum./Alum. (etched) 23°C ASTM D-1876-61T
Compressive Strength Test Methods
Compressive Strength Test Temperature Test Method
8,100 psi 23°C ASTM D-695-68T
Dielectric Constant Test Methods
Dielectric Constant Temperature Test Method
3.50 23°C ASTM D-150, 1 KHz
Dielectric Strength Test Methods
Dielectric Strength Test Method
850 V/mil ASTM D-149
Dissipation Factor Test Methods
Dissipation Factor Temperature Test Method
0.01800 23°C ASTM D-150, @ 1 KHz @ 23°C (73°F)
Insulation Resistance Test Methods
Insulation Resistance Test Method
Insulation Resistance 60°C/96% R.H./100 volts d.c.
2e11 (ohms) 1000 hrs., (.8 mm/.8 mm comb pattern on FR-4) 60°C/96% R.H./100 volts d.c.)
3e13 (ohms) Initial, (.8 mm/.8 mm comb pattern on FR-4) 60°C/96% R.H./100 volts d.c.)
Thermal Conductivity Test Methods
Thermal Conductivity Temperature Test Method
0.18 W/m°K 43°C @ 110°F on .250" samples
0.426e3 (Cal./sec. - cm - °C) 43°C @ 110°F on .250" samples
0.18 W/m°K 43°C @ 110°F on .250" samples
Volume Resistivity Test Methods
Volume Resistivity Test Method
4.1e14 (ohms/cm) ASTM D-257
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
Rigid ASTM D-2240
83 ASTM D-2240
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Temperature (°C) CTE Test Method
80e-6 (units/unit /°C) 5 to 30°C by TMA, Below Tg
180e-6 (units/unit /°C) 60 to 125°C by TMA, Above Tg
Glass Transition Temp (Tg) Test Methods
Glass Transition Temp (Tg) Glass Transition Temperature (Tg) Test Method
43°C by DSC, Onset
49°C by DSC, Mid-point
Light Refractive Index (RI) Test Methods
Light Refractive Index (RI) Temperature
1.6560 25°C
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