Polymer and elastomer compositions having carbon nanostructure additives and articles formed therefrom for use in EMI and RFI shielding and pressure sensitive seals with quantum tunneling composite effects

Abstract

Disclosed are compositions of at least one matrix polymer, which may be a thermoplastic polymer and / or a curable polymer having at least one functional group for crosslinking, for use in forming articles, and methods for making such articles, wherein the compositions and methods include three-dimensional, branched, and crosslinked carbon nanostructure additives. In one embodiment, the resulting articles can achieve volume resistivity levels of about 0.5 ohm-cm or less, which are useful for applications requiring sufficient conductivity to provide electromagnetic and / or radio frequency interference shielding. In other embodiments, other articles formed using the compositions disclosed herein can demonstrate dissipative and / or quantum tunneling effects, and are therefore useful as self-sensing pressure-sensitive articles, such as self-sensing seals.

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