The present invention relates to an electrically conductive film characterized by being able to undergo elastic deformation, having little residual strain rate and exhibiting stress relaxation properties. More specifically, the present invention relates to an electrically conductive film wherein the stress relaxation rate (R) and the residual strain rate (alpha), as measured in a prescribed extension-restoration test, are as follows: 20%≦R≦95% and 0%≦α≦3%.

The present invention relates to an electrically conductive film characterized by being able to undergo elastic deformation, having little residual strain rate and exhibiting stress relaxation properties. More specifically, the present invention relates to an electrically conductive film wherein the stress relaxation rate (R) and the residual strain rate (alpha), as measured in a prescribed extension-restoration test, are as follows: 20%≦R≦95% and 0%≦α≦3%.

A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.

A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.

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

Systems and methods for lightning strike materials are disclosed. The material may include a carbon fiber tow. Carbon nanotubes may be grown on carbon fibers within the carbon fiber tow. The carbon nanotubes may cause the carbon fibers to separate, decreasing a carbon tow fiber volume fraction of the tow. The growth of the carbon nanotubes may be controlled to select a tow fiber volume fraction of the tow. The lightning strike material may transmit electricity to decrease damage to the composite structure in case of a lightning strike.

A pest control and/or detection system generally includes an electrically conductive bait matrix including at least one carrier material that is at least one of palatable, a phagostimulant and/or consumable and/or displaceable by pests, and a plurality of electrically conductive particles. The electrically conductive particles are substantially randomly interspersed throughout the at least one carrier material. The at least one carrier material includes a thermoplastic material and/or a resin.

A pest control and/or detection system generally includes an electrically conductive bait matrix including at least one carrier material that is at least one of palatable, a phagostimulant and/or consumable and/or displaceable by pests, and a plurality of electrically conductive particles. The electrically conductive particles are substantially randomly interspersed throughout the at least one carrier material. The at least one carrier material includes a thermoplastic material and/or a resin.

The invention relates to a semiconductive polyolefin composition comprising, (A) 80 to 99.5 wt. % of an olefin polymer base resin based on the total weight of the semiconductive polyolefin composition; (B) 0.1 to 10.0 wt. % of first carbonaceous structures based on the total weight of the semiconductive polyolefin composition; (C) 0.2 to 15.0 wt. % of carbon black and/or second carbonaceous structures based on the total weight of the semiconductive polyolefin composition; and (D) optionally additives; wherein the combined amount of components (B) and (C) is at least 0.3 wt. % and not more than 15.0 wt. % based on the total weight of the semiconductive polyolefin composition; and wherein the semiconductive polyolefin composition has an electrical percolation threshold of not more than 5 wt. % of the combined amount of components (B) and (C) dispersed in the olefin polymer base resin (A), the electrical percolation threshold being defined as the critical concentration in wt. % of the components (B) and (C) in the olefin polymer base resin (A) where an exponential increase in electrical conductivity is observed; wherein the polyolefin composition has a conductivity of at least 1.Math.10.sup.−7 S/cm determined according to Broadband Dielectric Spectroscopy for a percolation threshold of 1.0 wt. % or lower and 2-point electrical measurements for a percolation threshold of more than 1.0 wt. %; and wherein components (A) to (D) add up to 100 wt. %.

The invention relates to a semiconductive polyolefin composition comprising, (A) 80 to 99.5 wt. % of an olefin polymer base resin based on the total weight of the semiconductive polyolefin composition; (B) 0.1 to 10.0 wt. % of first carbonaceous structures based on the total weight of the semiconductive polyolefin composition; (C) 0.2 to 15.0 wt. % of carbon black and/or second carbonaceous structures based on the total weight of the semiconductive polyolefin composition; and (D) optionally additives; wherein the combined amount of components (B) and (C) is at least 0.3 wt. % and not more than 15.0 wt. % based on the total weight of the semiconductive polyolefin composition; and wherein the semiconductive polyolefin composition has an electrical percolation threshold of not more than 5 wt. % of the combined amount of components (B) and (C) dispersed in the olefin polymer base resin (A), the electrical percolation threshold being defined as the critical concentration in wt. % of the components (B) and (C) in the olefin polymer base resin (A) where an exponential increase in electrical conductivity is observed; wherein the polyolefin composition has a conductivity of at least 1.Math.10.sup.−7 S/cm determined according to Broadband Dielectric Spectroscopy for a percolation threshold of 1.0 wt. % or lower and 2-point electrical measurements for a percolation threshold of more than 1.0 wt. %; and wherein components (A) to (D) add up to 100 wt. %.