Spray foam electromagnetic interference absorber
AssigneeInternational Business Machines Corporation
InventorsSamuel R. Connor, Eric J. Campbell, Stuart Brett Benefield, Matthew Doyle, Matteo Cocchini
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Abstract
A method, a device, and a composition are disclosed. The method includes providing a polyol blend that includes a polyol resin and an electromagnetic (EMA) additive, providing an isocyanate resin selected such that blending the isocyanate resin with the polyol blend results in an EMA spray foam. The device includes a first compartment containing an isocyanate resin and a second compartment containing a polyol blend, which includes a polyol resin and an EMA additive. The composition includes a polyurethane spray foam and an EMA additive blended into the polyurethane spray foam.
Claims20
A method, comprising:
- providing a polyol blend, the polyol blend comprising:
- a polyol resin;
- and
- electromagnetic absorber (EMA) particles with hydrophobic surface modifiers;
- and
- providing an isocyanate resin selected such that blending the isocyanate resin with the polyol blend results in an EMA spray foam.
A composition, comprising:
- a polyurethane spray foam;
- and
- electromagnetic (EMA) particles with hydrophobic surface modifiers blended into the polyurethane spray foam.
Dependencies are inferred from the claim text.