Addressing EMI shielding challenges

Flexible electrically conductive adhesive

electrically conductive adhesive
Dowsil EC-6601 is a flexible, silicone adhesive that combines reliable performance with EMI shielding. It is used in demanding applications like radar, LiDAR, sensors and batteries. Source: Dow
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Dow introduced the Dowsil EC-6601 electrically conductive adhesive, a material engineered for reliable performance and electromagnetic compatibility (EMC) in demanding electrical and electronics applications in the transportation, communications and consumer markets. This adhesive combines strong electromagnetic interference (EMI) shielding capabilities across a wide range of frequencies with durable mechanical and conductive properties over time, underscoring how Dow is further growing its highly differentiated EMI shielding solutions portfolio.

“Today’s most innovative electrical and electronics technologies need a strong adhesive with stable EMI shielding across a broad frequency range, including the millimeter range for 5G,” said Jeroen Bello, Global Senior Marketing Manager for New Technologies. “Our new Dowsil EC-6601 electrically conductive adhesive provides this, along with long-lasting mechanical and electrical performance, and the ability to bond to a variety of substrates. With our innovative customer-centric approach, formulation expertise, and supply chain integration, Dow is a proven collaboration partner with the growing portfolio of solutions needed to address today’s toughest EMI challenges.”

The electrically conductive adhesive is formulated to form strong bonds to many substrates and has greater than 150 % elongation to enable flexibility at the joints. With its longer shelf life, better material strength, increased flexibility, stronger adhesion, and greater electrical conductivity, this adhesive provides advantages over other conductive elastomers, a category of materials that is used widely in today’s printed circuit board and advanced systems assembly market.

In the transportation industry, for example, the electrification of vehicles is driving increased demand for greater connectivity, reliability and compliance with tight safety regulations that require high-performance EMI shielding. Applications, such as electronic control units (ECU), cameras, radar, LiDAR, sensors and batteries, all need dependable performance over time with zero defects. The new vehicle architectures for autonomous vehicles are also raising the bar for EMI shielding because of their many sensor configurations.

In the communications space, 5G base stations and optical interconnects that need greater data transfers at faster speeds are challenging EMC experts. Consumer electronics with high-density packaging and smart architectures are also susceptible to electronic pollution that can disrupt or disable circuits. Dowsil EC-6601 provides the stable EMI shielding that is required for these and other applications while maintaining its properties and electrical conductivity.

It can be used as an adhesive, formed-in-place gaskets (FIPG), or cure-in-place gaskets (CIPG). This silicone elastomer has an optimized dispense rate and withstands high temperatures, humidity, vibration, compression and tensile stress. With its high elongation, the material can stretch to support the movement of a joint when used as an adhesive, FIPG or CIPG.

www.dow.com

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