EMI RFI Shielding Materials Companies

April 2023

Parker Hannifin's Chomerics Division has introduced CHO-BOND 1018, a two-component electrically conductive polythioether that can be used as a seam sealant, fillet, or gap filler to provide high level EMI/RFI shielding for modern, sophisticated electronic systems.

While the product's specially formulated polymer offers resistance to aggressive chemicals (including de-icing solutions), jet fuels, hydraulic fuels, and other oil products, its nickel-aluminum filler resists corrosion against MIL-DTL-5541 Type I and Type II coated aluminium substrates. All applications subjected to demanding operating conditions can benefit from the use of CHO-BOND 1018.

With a maximum DC volume resistivity of 0.250 Ω-cm, this material has potential applications in defence radar systems, ballistics and guided weapons, ground and transport vehicles, military shelters and containers, aeroplanes, UAVs, drones, and helicopters, as well as any other application where resistance to fluids and fuels and corrosion is crucial.

June 2023

A range of flexible conductive and insulating sheet films, including EMC protection, have been developed by Toyochem for the purpose of safeguarding electrical and electronic equipment. "The sheet films, branded Liotelant, exhibit high water-resistance and are highly flexible, with an elongation of 500%," the company claims. "The films can be formed into a lightweight, multi-layer shield, more compact than a metal shielding can, by hot-press moulding them onto the electromagnetic interference source on the PCB."

The idea is to cover the noisy component or PCB area with hot-pressed EMI shielding films first, followed by the pressing of a conductive shielding film.

Wearables and communication devices are anticipated to have uses.

Major players in the EMI & RFI shielding materials market attempting to increase market demand by investing in research and development operations include Chomerics (U.S.), Laird PLC (U.K.), PPG Industries, Inc. (U.S.), Henkel AG & Co. KGaA (Germany), RTP Company (U.S.), 3M (U.S.), Schaffner Holding AG (Switzerland), Tech-Etch, Inc. (U.S.), AI Technology, Inc. (U.S.), Orion Industries Incorporated (U.S.), MAJR Products (U.S.), and Holland Shielding Systems BV (The Netherlands).