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2019.03.19

Dow Introduces DOWSIL™ EA-4700 CV Adhesive to Support Faster Curing at Room Temperature for More Efficient Assembly

Advanced silicone adhesive supports increased throughput for electronic assembly while maintaining the performance advantages of silicone.

Dow, a global leader in silicones, silicon-based technology and innovation, today launched DOWSIL™ EA-4700 CV Adhesive, a next-generation silicone solution for transportation assembly that is capable of room temperature curing at faster speeds while maintaining the performance advantages expected from silicone adhesives. This advanced new assembly solution bonds at room temperature to traditional metals and plastics used in electronics assembly. DOWSIL™ EA-4700 CV Adhesive also offers low levels of volatile condensable materials to support its use near sensitive electronic components.

“Electric vehicle and autonomous vehicle development is accelerating across the industry, and engineers globally are seeking innovative solutions to meet safety and reliability requirements while achieving more efficient throughput to produce battery packs and ADAS sensor modules such as RADAR, LiDAR and cameras,” said Bruce Hilman, global segment leader for transportation assembly at Dow Performance Silicones. “DOWSIL™ EA-4700 CV Adhesive provides durable adhesion and environmental sealing of substrates used in automotive electronic modules, including aluminum, PBT and PPS. Importantly, this silicone adhesive’s ability to provide faster curing at room temperature enables increased throughput for efficient mass production with less use of energy.”

blowout of white battery

With room temperature (25°C) curing, new DOWSIL™ EA-4700 CV Adhesive achieves 1 Megapascal (MPa) adhesion strength within three hours, depending on the substrate material. Using new chemistry and formulation techniques, faster cure times are achieved with reasonable open times and dispensability. Both factors are important to assembly process efficiency. By reducing or eliminating oven curing, manufacturers can reduce capital expense and energy usage during operation. The technology used in DOWSIL™ EA-4700 CV Adhesive also allows heat exposure to accelerate adhesion development, without the risk of voiding. For example, exposure to heat at 80°C, a temperature compatible with most plastic substrates, for less than 5 minutes allows 1 MPa of adhesion to build on polybutylene terephthate (PBT).

A two-part, primerless adhesive, DOWSIL™ EA-4700 CV Adhesive cures rapidly after mixing and provides stable adhesion and sealing performance under a typical operational environment of 150°C, thermal shock, and 85°C/85 percent relative humidity. This advanced assembly solution also has 600 percent elongation, which makes it suitable for larger modules that experience a coefficient of thermal expansion (CTE) mismatch between substrates.

DOWSIL™ EA-4700 CV Adhesive is available globally from Dow directly or from Dow’s extensive network of distribution partners.

About Dow Performance Silicones
Dow Performance Silicones, a business unit of Dow, delivers a portfolio of performance-enhancing solutions to serve the diverse needs of customers and industries around the world. The business uses innovative silicon-based technology to provide solutions and ingredients to customers in commercial construction and high-performance building, consumer goods, silicone elastomers, and pressure sensitive industries. As a global leader in innovation and silicone technology, we are committed to bringing new and proven solutions to the market that do more for our customers and continue to improve the lives of consumers worldwide. Visit consumer.dow.com to learn more.

About Dow
Dow combines science and technology knowledge to develop premier materials science solutions that are essential to human progress. Dow has one of the strongest and broadest toolkits in the industry, with robust technology, asset integration, scale and competitive capabilities that enable it to address complex global issues. Dow’s market-driven, industry-leading portfolio of advanced materials, industrial intermediates, and plastics businesses deliver a broad range of differentiated technology-based products and solutions for customers in high-growth markets such as packaging, infrastructure, and consumer care. Dow is a subsidiary of DowDuPont (NYSE: DWDP), a holding company comprised of Dow and DuPont with the intent to form three strong, independent, publicly traded companies in agriculture, materials science and specialty sectors. More information can be found at dow.com.

For further information please contact:

Isabelle Vanderstichelen
Dow Performance Silicones
+32.64.889.350
isabelle.vanderstichelen@dow.com

Jo Duran
AH&M Marketing Communications
+1.413.448.2260, Ext. 200
jduran@ahminc.com

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