Foam in place conductive polyurethane foam

Details Foam in place conductive polyurethane foam Foam in place conductive polyurethane foam

1988-11-07

1990-06-05

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

252512, 252514, 521 99, C08G 1814

Patent

active

049314793

ABSTRACT:
An electrically conductive elastomeric foam for use in EMI/RFI shielding applications, especially as a gap filler or caulk. The foam is based upon a polyurethane system wherein the electrically conductive filler is intermixed with either the isocyanate or active hydrogen containing component before reacting the two components to create the foam. The foam is lightweight, flexible, highly conductive, capable of withstanding cyclical vibration and is capable of adhering to various conductive surfaces such as metal, composites and glass. The foam is preferably room temperature curable and consists of a water activable prepolymer or quasi prepolymer system.

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