Dow Corning EA-4600 is a solvent free, one-component, moisture-cure silicone material offering longer open time and pot life, as well as lower odour and lower levels of volatility compared to conventional organic-based hot melt adhesives.
Designed for the electronic devices market, this hot melt adhesive promises to deliver enhanced reliability, reworkability and waterproofing for smart devices. With its room temperature vulcanisation (RTV), this black adhesive provides improved assembly of consumer electronics and other high-volume demanding manufacturing operations.
This easily dispensed adhesive achieves instant green strength, allowing electronic assemblies to be handled immediately after its application. The product can be applied neatly as a liquid melt in very thin bonding lines of less than 0.5mm.
Offering extended service temperatures from -40°C to 150°C, the material will soften when exposed to high temperatures but revert to its typical properties after cooling. Unlike conventional polyurethane-based hot melt solutions, EA-4600 adhesive incorporates ultraviolet (UV) markers to support automated UV inspection of finished parts. It can also be easily reworked within 24 hours of application.
Once fully cured, this hot melt delivers durable protection against chemicals, water and dust to enhance the reliability and performance of high-value electronics assemblies. As a reactive material, EA-4600 cools quickly and cures at room temperature to become a viscoelastic polymer providing strong, flexible, primerless adhesion to an abundance of plastic and metal substrates.
