Permabond ES05780320C0101

ES578 Insulating Single-Part Epoxy, Black, 320ml Cartridge

Permabond® ES578 is a single-part heat-cured epoxy adhesive with excellent adhesion to metal surfaces, ceramics as well as composite materials. ES578 provides excellent thermal conductivity and bond strength. ES578 was designed for applications requiring heat dissipation such as bonding aluminum heat sinks to ceramic headers. The cured adhesive has been designed to meet the fire retardancy requirements of UL94 V-0.

Very good thermal conductivity
Excellent resistance to vibration
Easy to use - no mixing required
High shear and peel strength
High-temperature resistance
Good resistance to chemicals
Electrically insulating

$153.23

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Technical Documents

Product Info & TDS Sheets

Permabond ES578 Technical Data Sheet

Details

Physical Properties of Uncured Adhesive

Chemical composition: Epoxy Resin
Appearance: Black
Viscosity @25°C: 600,000 to 800,000 mPa.s (cP)
Specific gravity: 1.6

Typical Curing Properties

Flow at High-TemperatureFlowing
Maximum gap fill: 0.5mm (0.02")
Cure speed (oven)*
- 130° C (266°F): 75 minutes
- 150°C (300°F): 60 minutes
- 170°C (338°F): 25 minutes
Cure speed (induction) <3 minutes

*Actual cure times will depend on the time it takes for the adhesive to reach this temperature - for example, large assemblies or a crowded oven will require longer to reach full cure. Alternative, quicker methods of curing include induction, hotplates, infrared lamps, and hot-air guns.

Physical Properties of Cured Adhesive

Shear strength* (ISO4587):
- Steel 27 - 41 N/mm² (4000 - 6000 psi)
- Aluminium 17 - 31 N/mm² (2500 - 4500 psi)
- Zinc 14 - 27 N/mm² (2000 - 4000 psi)
Hardness (ISO868): 80-85 Shore D
Coefficient of thermal expansion: 45 x 10^-6mm/mm/°C (below Tg)
Thermal conductivity: 1.0 W/(m.K)
Dielectric strength: 40-45 kV/mm
Glass transition temperature (Tg - DSC): 105°C (220°F)