ED-425PL | One-Part Epoxy Adhesive for Rubber & Plastics

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features

Strong adhesion to electronic components
Excellent toughness
Low outgassing

Product Description

LINQBOND ED-425PL is a two-component, room-temperature vulcanizing (RTV) epoxy adhesive system engineered for robust adhesion across diverse substrates, including various elastomers, thermoplastics, and sensitive electronic components. Its advanced formulation provides enhanced chemical inertness and resilience against severe environmental stressors. The cured adhesive exhibits exceptional mechanical properties, characterized by superior toughness and high resistance to thermal cycling and thermal shock. The polymerized surface is non-tacky and maintains a high-gloss finish. Furthermore, ED-425PL demonstrates minimal volatile organic compound (VOC) outgassing, making it suitable for applications requiring low contamination. This adhesive system is also optimized for a broad range of general-purpose potting and bonding applications, offering reliable encapsulation and structural integrity.

LINQBOND ED-425PL features a user-friendly 1:1 mix ratio by volume, simplifying dispensing and reducing preparation time. It is fully compliant with international environmental directives, including the RoHS 2011/65/EU Directive, ensuring adherence to regulations on hazardous substances.

Product Applications

Bonding rubber, plastic, and metal components in harsh environments
General-purpose potting and encapsulation

Specifications
Additional Information

Technical Specifications

General Properties

Mix Ratio

Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture

2:1

Pot Life

Pot Life
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed.

It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.

3.0x10¹ minutes

Thermal Properties

Glass Transition Temperature (Tg)

Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding.

The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.

40 °C

Mechanical Properties

Hardness
Hot Hardness, Shore D @ 175°C	75

Curing Conditions

Curing Schedule
Full Cure Time	1.0x10⁰ hours

Additional Information

Directions for Use

Make sure that the substrate is clean and free of contaminants, such as dirt, grease, or mold release agents. A simple solvent wipe is often sufficient.
Thoroughly mix the parts A and B at a 2:1 weight ratio until a homogeneous mixture is formed.
Cure time will depend on actual production parts and equipment such as part geometry, materials, bondline thickness and the oven temperature.
For maximum bonding strength, apply the adhesive evenly to both surfaces to be joined.

Storage and Handling
Store the container in a cool, dark place, away from direct sunlight. Exposure to sunlight may cause the resin and hardener to yellow. Shelf life when stored at room temperature between 14 and 34 °C is 365 days (12 months). Keep the container sealed and prevent moisture contamination when not in use and be sure to replace the lid immediately after each use.