PERMABOND® ET540 Two-Part Epoxy

Product code: PERMABOND® ET540
Manufacturer: Permabond
Package size: 400 ml cartridge
Shelf Life:

PERMABOND® ET540 is a two-part, 2:1 mixable, semi- flexible toughened no slump epoxy adhesive with good adhesion to a variety of substrates such as wood, metal, ceramics and some plastics and composites.

Permabond ET540 forms tough bonds providing high peel resistance and high shear strength coupled with excellent resistance to high temperatures. The extended work life of this product allows for adjustment making it very suitable for larger applications.

FEATURES AND BENEFITS

Adhesion to a wide variety of substrates
Full cure at room temperature
Easy to appMK
High shear and peel strength
Good impact strength
High temperature resistance
Non-drip rheology

Physical Properties of Uncured Adhesive

	ET540 A side	ET540 B side
Chemical composition	Epoxy Resin	Polyamine Hardener
Appearance	White	Amber
Viscosity @ 25°C	20rpm: 75,000 mPa.s *(cP)* 2rpm: 225,000 mPa.s *(cP)*	20rpm: 150,000 mPa.s *(cP)* 2rpm: 500,000 mPa.s *(cP)*
Specific gravity	1.1	1.0

Typical Curing Properties

Mix ratio by volume	2:1
Maximum gap fill	5 mm *0.2 in*
Usable / pot life @23°C	120-150 mins
Handling time @23°C	150-180 mins
Working strength @23°C	24 hours
Full cure @23°C	72 hours

Typical Performance of Cured Adhesive

Shear strength* (ISO4587)	Mild steel: 22-26 N/mm² *(3190-3770psi)* Aluminium: 20-24 N/mm² *(2900-3480psi)* Stainless Steel: 32-35 N/mm² *(4640-5075psi)* Carbon Fibre: >25 N/mm² SF (>3625psi) FRP Glass/Polyester: >8 N/mm² SF *(>1160psi)* FRP Glass/Epoxy: 23-27 N/mm² *(3335-3915psi)* PEEK: 2-3 N/mm² *(290-435psi)* Polycarbonate: 2-4 N/mm² *(290-580psi)* PA6 30% filled: 3-5 N/mm² *(435-725psi)*
Peel strength (aluminium) (ISO11339)	60-80 N/25mm *(13-18 PIW)*
Hardness (ISO868)	60-75 Shore D
Elongation at break (ISO37)	4-8%
Glass transition temperature Tg	45-55°C *(113-131°F)*
Dielectric strength	15-25 kV/ mm
Thermal conductivity	0.55 W/(m.K)

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