Applications

DOWSIL™ EA-4100 Adhesive for PCB assemblies, general bonding, gasketing, and room-temperature moisture curing.

  • Item Name: DOWSIL™ EA-4100 Adhesive

  • Manufacturer: The Dow Chemical Company

  • Technologies: One-part, white moisture-cure silicone adhesive

  • Color: White

  • Cure Type: Moisture-cure at room temperature

  • Package Size: Contact to Techniq VN for details

  • Shelf Life: Contact to Techniq VN for details

1. Product Overview

DOWSIL™ EA-4100 is a one-part, white, moisture-cure silicone adhesive formulated for needle dispensing. It cures at room temperature under ambient humidity, eliminating the need for curing ovens and reducing energy costs. The adhesive achieves most of its final physical properties within 24–72 hours, though handling can typically occur within minutes to a few hours. It provides consistent mechanical and electrical performance across a broad temperature range, with excellent adhesion to reactive metals, ceramics, glass, and certain plastics.


2. Applications

The adhesive is suited for PCB system assemblies, electronics bonding, and general component attachment where reliable adhesion, moderate flexibility, and stable performance under thermal cycling are required. It can be applied in automated or manual dispense processes and is effective in situations needing fast throughput and broad environmental durability.

3. Typical Properties

DOWSIL™ EA-4100 adhesive is designed to balance mechanical strength, flexibility, and processability. In its uncured state, it is a white paste with good extrusion rate and controlled slump, making it easy to dispense and apply precisely. Upon curing, it achieves medium hardness, good tensile strength, and reliable elongation, ensuring durability under vibration and thermal stress. With a tack-free time of about 9 minutes, it supports rapid assembly lines. The material performs well across -45°C to 200°C, tolerates intermittent solvent exposure, and maintains stable properties in electronics applications, extending device service life.

Property Unit Result Condition/Note
One/Two Part One
Color White paste Uncured
Durometer Shore A 45 Cured
Elongation % 250 Cured
Extrusion Rate g/min 260 Uncured
Slump cm 0.4 Uncured
Specific Gravity 1.42 Cured
Tack-Free Time min 9 25°C
Tensile Strength psi / MPa / kg/cm² 335 / 2.3 / 23 Cured

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