PERMABOND ET5428 Two-Part Epoxy

PERMABOND® ET5428 is a thixotropic two-part adhesive with excellent resistance to impact and vibration. The controlled flow properties as well as its ease of mixing and application, enables the adhesive to be used where gap filling is required. Permabond® ET5428 has been found to provide exceptional performance even at elevated temperatures.

Permabond® ET5428 has been specifically formulated for use in applications requiring toughness and high strength and shows special benefits in the construction of composite assemblies.

FEATURES AND BENEFITS

Ideal for bonding composite materials
Easy to apply
High shear and peel strength Rapid cure speed
High temperature resistance
Colour matched for FRP bonding

Physical Properties of Uncured Adhesive

	ET5428 A side	ET5428 B side
Chemical composition	Epoxy Resin	Polyamine Hardener
Appearance	White	Cream
Mixed appearance	Cream
Viscosity @ 25°C	20rpm: 115,000 mPa.s *(cP)* 2rpm: 300,000 mPa.s *(cP)*	20rpm: 200,000 mPa.s *(cP)* 2rpm: 1,100,000 mPa.s *(cP)*
Specific gravity	1.1	1.1

Typical Curing Properties

Mix ratio	2:1 by volume 2:1 by weight
Maximum gap fill	5 mm *0.2 in*
Usable / pot life @23°C 10g mixed	10-20 mins
Handling time	23°C: 30-45 mins
Working strength	23°C: 1 hour 60°C: 15 minutes
Full cure	23°C: 24-48 hours 60°C: 1 hour

Typical Performance of Cured Adhesive

Shear strength* (ISO4587)	Mild steel: 28-34 N/mm² *(4060-4930psi)* Aluminium: 22-28 N/mm² *(3190-4060psi)* Stainless Steel: 29-35 N/mm² *(4205-5075psi)* Carbon Fibre: >25 N/mm² SF (>3625psi) FRP Glass/Polyester: >9 N/mm² SF *(>1305psi)* FRP Glass/Epoxy: 24-28 N/mm² *(3480-4060psi)* PEEK: 4-5 N/mm² *(580-725psi)* PA6 30% filled: 3-4 N/mm² *(435-580psi)*
Peel strength (aluminium) (ISO4578)	150-250 N/25mm *(33-55 PIW)*
Impact strength (ASTM D-950)	30-40 KJ/m²
Hardness (ISO868)	65-75 Shore D
Elongation at break (ISO37)	<5%
Glass transition temperature Tg	50-60°C *(122-140°F)*
Dielectric strength	15-25 kV/ mm

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