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LOCTITE® EA 3423™ – Epoxy Adhesive – Bonding for Metals, Ceramics, Rigid Plastics, and Wood

  • Item Name: LOCTITE® EA 3423™
  • Manufacturer: Henkel
  • Technologies: Epoxy-based adhesive
  • Color: Resin – Grey, Hardener – Beige, Mixture – Grey
  • Cure Type: Room temperature cure after mixing
  • Package Size: Contact to Techniq VN for details.
  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

LOCTITE® EA 3423™ is a two-component, high-viscosity, thixotropic epoxy adhesive that cures at room temperature. It is designed for general-purpose bonding, offering high strength across various substrates. The adhesive can bond rough, vertical surfaces and can fill gaps up to 3 mm. Once cured, it can be sanded for a smooth finish.


2. Applications

  • Suitable for bonding metals, ceramics, rigid plastics, and wood.
  • Used in structural bonding applications requiring high strength and durability.
  • Ideal for gap-filling applications up to 3 mm.

3. Typical Properties

Uncured Properties

Property Resin Hardener Mixed
Appearance Grey paste Beige paste Grey paste
Specific Gravity @ 25°C 1.3 – 1.36 0.95 – 1
Viscosity @ 25°C (mPa·s) 100,000 – 400,000 70,000 – 110,000
Mix Ratio (by weight) 100 : 70
Pot Life @ 25°C (200 g mass) 30 – 60 min

Cured Properties (After 7 Days @ 22°C)

Property Value
Shore Hardness (D) 70 – 80
Glass Transition Temp. (°C) 55
Elongation (%) 2
Tensile Strength (N/mm²) 24 (3,500 psi)
Tensile Modulus (N/mm²) 1,500 (220,000 psi)
Compressive Strength (N/mm²) 64 (9,300 psi)
Coefficient of Thermal Conductivity (W/m-K) 0.28
Volume Resistivity (Ω·cm) 30 × 10¹⁵

Adhesive Strength (Lap Shear, ISO 4587, Cured 7 Days @ 22°C)

Substrate Strength (N/mm²) Strength (psi)
Steel (grit blasted) 15 – 19 2,200 – 2,800
Stainless Steel 13 – 17.5 1,900 – 2,500
Aluminum (abraded) 7 – 12 1,000 – 1,700
Galvanized Steel (HD) 5 – 11 730 – 1,600
Brass 4 – 12 580 – 1,700
Polycarbonate 1 – 4 150 – 580
Hardwood (Mahogany) 5 – 13 730 – 1,900

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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