Primerless silicone encapsulant protects LED luminaires

18th February 2019

DOW

Alex Lynn

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Specialist in silicones and silicon-based technology, Dow, unveiled the DOWSIL EI-2888 Primerless Silicone Encapsulant, an optically-clear silicone for professional LED lighting that cures at room temperature. This silicone technology provides optical performance without compromise and offers rheological properties for use with light fixtures in a variety of shapes and forms.

Designed for explosion proof and high ingress protection rated luminaries, DOWSIL EI-2888 Primerless Silicone Encapsulant is also cost-effective to buy and use as its patented composition does not contain platinum, unlike other silicone solutions currently available on the market.

Dow’s experts, Julien Renaud, Technical Service and Development Senior Professional, and Thierry Cooremans, Technical Service and Development Specialist, will provide an in-depth technical review of the company’s new DOWSIL EI-2888 Primerless Silicone Encapsulant during a webinar the company will be conducting on February 21st, 2019 at 9:00am Eastern Standard Time.

“LED luminaries in harsh environments need protective materials that are reliable, easy to apply, and that provide robustness of cure,” said Konstantin Sobolev, Strategic Marketing Manager for Dow and one of the presenters for the February 21st webinar. “DOWSIL EI-2888 Primerless Silicone Encapsulant eliminates a time-consuming processing step and reduces waste that can occur if curing is compromised by surface contaminants or moisture. This low-viscosity silicone also dispenses readily and adheres reliably without sacrificing optical properties. DOWSIL EI-2888 Primerless Silicone Encapsulant is an excellent choice for many professional applications, including explosion proof lighting, outdoor displays, and flexible and rigid LED strips.”

A two-part protective material with a 1:1 mix ratio, DOWSIL EI-2888 Primerless Silicone Encapsulant cures at room temperature with optional heat acceleration. This UL 94 compliant, 100% polydimethylsiloxane (PDMS) silicone provides even curing and is insensitive to inhibition, a typical issue for platinum catalysts; and material reversion, a traditional problem in enclosed spaces at high temperatures.

DOWSIL EI-2888 Primerless Silicone Encapsulant can be applied with automated static or dynamic metered mixing, manual mixing, or with flow, pour or needle dispensing equipment. This novel self-priming encapsulant adheres to a variety of substrates and supports the design of innovative LED luminaires in IP-rated enclosures.

Dow’s new primerless encapsulant is available globally under the DOWSIL label.