Name: DOWSIL EA-2900
Brand: Dow Silicones Corporation
SKU: DOWSIL EA-2900

Main features

10-Minute Assembly Strength
400% Cured Elongation
17.1 kV/mm Dielectric Strength

Product Description

DOWSIL EA-2900 Sealant White is a one-part, white, neutral alkoxy-cure RTV silicone adhesive for bonding and sealing PCB assembly components and optical parts in LED lamps and luminaires. Sufficient adhesion strength is reached after 10 minutes to continue assembly; aluminum lap shear at that point is 4 kPa. Typical tack-free time is 20 minutes at 23 deg C and 50% RH, and extrusion rate is 190 g/min. After 7 days at 23 deg C and 50% RH, the cured elastomer has 400% elongation at break and 2.1 MPa tensile strength. Unprimed lap-shear data are provided for aluminum, glass, polycarbonate, PMMA, and molded silicone.

Key features

Early assembly strength: Sufficient adhesion strength is reached after 10 minutes to continue assembly; aluminum lap shear at that point is 4 kPa.
Extrusion rate: Typical extrusion rate is 190 g/min.
Conditioned cured elongation: Elongation at break is 400% after 7 days at 23 deg C and 50% RH.

Applications

Bonding and sealing PCB assembly components and devices; assembling optical parts into LED lamps and luminaires.

TDS, SDS & Technical Documents

Technical Specifications

General Properties

Color

White

Specific Gravity

1.52

Physical Properties

Extrusion Rate

190 g/min

Tack-Free Time

20 minutes

Mechanical Properties

Elongation

400 %

Electrical Properties

Volume Resistivity

1.02 x 10¹⁴ Ohms⋅cm

Additional Information

Technical properties

Before-processing adhesive properties

Property	Value	Unit	Method / condition
Extrusion rate	190	g/min	Typical
Specific gravity	1.52	g/ml	Typical
Tack-free time	20	min	Typical; 23 deg C and 50% RH
Shelf life	12	months	At 25 deg C