These products are also recommended for shielding, bonding wave guide plumbing in hybrid circuit assembly, and as a plating base. These adhesives are used extensively in the repair of printed circuits. These materials along with structural foam are all transparent to radio frequency and need to be treated to make them conductive. Uncontrolled interference can cause memory erasure, navigational errors in marine and aircraft equipment, jammed radio reception and failures in medical equipment. Most of Dynaloy s coatings are silver filled.
Silver is a highly conductive metal with excellent corrosion resistance.
Silver coatings are specified for military applications where electromagnetic protection and radio frequency interference protection is required. Realizing the need for lower cost shielding products, Dynaloy is now developing conductive coatings based on copper and nickel. Copper has been a problem in the past because of its oxidation in coatings rendering it ineffective as a reliable conductor. Dynaloy is researching solutions to this problem. Nickel, although not quite as good a conductor as copper or silver, absorbs more electromagnetic interference because of its magnetic permeability.