3M Thermal Bonding Film AF42 (4 mil)

Overview

• Application Type

  • Adhesive - Bond

• 1 Part or 2 Part

  • 1 Part or 2 Part - 1 Part

• Material Form

  • Film

• Substrate

  • Glass
  • Metal
  • Aluminum - Etched aluminum, Al (solvent wiped), Al (scour pad abraded), Al (sanded), FPL Etched Aluminum
  • Copper
  • Steel - CRS (cold rolled steel), CRS (scour pad abraded, solvent wiped)
  • Plastic - PEN Plastic
  • Polyimide (PI) - Polyimide Film
  • Phenolic - Phenolic Board
  • Wood - Phenolic Board
  • Polyester - Polyester Film
  • Stainless Steel - Stainless Steel (solvent wiped)
  • Other - FR-4 (solvent wiped), LCP (solvent wiped), Black E-coat, Ultem® 1000, Borosilicate Glass

• Industry

  • Electronics
  • Other - Joints encountering

• Chemistry

  • Epoxy
  • Other - Low halogen content

• Cure Method

  • Heat - Heat cure

• Color

  • Translucent

• Key Specifications

  • Mil-Spec (United States Military Standard): A-5090D or (ASTM D 1002) - MIL-A-5090D or ASTM D 1002).

Specifications

Cure Specs

Cure Temperature (°C)	177, 204, 232
Cure Time (min)	60, 15, 10
Viscosity (cPs)	Low flow
Work / Pot Time (min)	40,320	Test Method

Bond Strength

Structural/Load-Bearing	Structural bond strength
General Bond Strength (psi)	No Tack
Peel Strength (piw)	High, 55, 48, 45, 52, 58, 11, 58, 1, 8, 3, 49, 36, 50, 14, 60, 63, 68, 58, 55, 63, 66, 56, 54, 36, 51	Test Method
Shear Strength (psi)	4,600, 3,700, 3,750, 500, 1,350, 600, 2,500, 400, 650, 350, 350, 1,000, 1,500, 250, 1,200, 1,450, 200, 300, 900, 1,500, 1,300, 350, 175, 33 (Mpa)	Test Method
Cleavage Strength (psi)	High, 1,300, 720, 400	Test Method
Tensile Strength (psi)	4,800, 1.9 (J), 59 (Mpa)	Test Method

Tape Properties

Total Thickness (mil)	4

Material Resistance

Arc Resistance (sec)	Arc Resistance
Chemical Resistance	Excellent chemical resistance, Ethyl Gasoline, Isopropyl Alcohol, Methyl Ethyl Ketone, Heptane, 3M™ Citrus Base Cleaner, Tap Water
High Temperature Resistance (°C)	121
Low Temperature Resistance (°C)	-55
Impact Resistance	Excellent impact resistance
Other Resistance	Excellent Drop resistance

Conductivity

Dissipation Factor	0.00400, 0.00600, 0.00800	Test Method
Dielectric Strength (V/mil)	900	Test Method
Dielectric Constant	4.60, 4.20, 3.80	Test Method
Thermal Conductivity (W/m°K)	0.21	Test Method
Surface Resistivity (O)	4.1e13 (ohm/square)	Test Method
Volume Resistivity (O)	1.2e15 (ohm/cm)	Test Method

Hardness

Durability	Tough
Stress Relief	Stress relief
Shore D Hardness	76	Test Method
Elongation (%)	350	Test Method
Flexibility	flexible
Modulus (psi)	100 ( MPa)	Test Method

Other Properties

Glass Transition Temp (Tg) (°C)	55, 50, 45	Test Method
Coefficient of Thermal Expansion (CTE)	63e-6 (units / unit /°C @ 10°C/min.), 13e-6 (units / unit /°C @ 10°C/min.), 266e-6 (units / unit /°C @ 10°C/min.)	Test Method

Business Information

Shelf Life Details	3M™ Thermal Bonding Film AF42 has a work life of 4 weeks. Work life is defined as the time the product can be at room temperature, and will yield the performance data summarized in this data sheet if bonds are made and tested per instructions. Usage above 70°F (21°C) prior to bonding can reduce bonding performance. While not in use, 3M film AF42 should be stored at or below 40°F (4°C); The shelf life of 3M film AF42 is 15 months when stored at or below 40°F (4°C) in the original packaging materials., 3M™ Thermal Bonding Film AF42 has a work life of 4 weeks. Work life is defined as the time the product can be at room temperature, and will yield the performance data summarized in this data sheet if bonds are made and tested per instructions. Usage above 70°F (21°C) prior to bonding can reduce bonding performance. While not in use, 3M film AF42 should be stored at or below 40°F (4°C); The shelf life of 3M film AF42 is 15 months when stored at or below 40°F (4°C) in the original packaging materials.
Shelf Life Temperature (°F)	40, 70
Shelf Life Type	From the date of manufacture, Shelf Life Type
Shelf Life (mon)	15, 1