A method, system and device for securing conductive material on catheter elements for tissue sensing and cryogenic ablation. This may be used to deposit or embed conductive material onto or within polymeric materials. The method of manufacturing a balloon with conductive material may include extruding a polymeric material where the polymeric material includes embedded electrically conductive material. At least a portion of the polymeric material may be removed to expose at least a portion of the embedded electrically conductive material. The benefits may include allowing local bipolar recordings, contact assessment and ice thickness, and compatibility with 3-dimensional electroanatomical mapping systems.

The present invention is directed to additive manufacturing compositions and methods for producing additive manufacturing composite blends with oxidized discrete carbon nanotubes with dispersion agents bonded to at least one sidewall of the oxidized discrete carbon nanotubes. Such compositions are especially useful when radiation cured, sintered or melt fused.

A rubber composition manufacturing method comprises an operation in which at least rubber, silica, and silane coupling agent are kneaded in an internal kneader at not less than a temperature lower limit for a coupling reaction between the silica and the silane coupling agent to proceed. For at least a portion of time during which that operation is being carried out, a compressed gas is delivered to the kneading chamber while the ram is in a nonpressing state.

3D printers may fabricate tires with graphene-based materials. Biopolymers may be used to produce graphene foam. Molten salt synthesis with metallic powders may produce coatings for the foam to protect the tires from oxidation. Graphene oxide sheet may also be applied to the tire structure using an inexpensive bio-adhesive.

A bladder for tire vulcanizing containing a crosslinked fluoroelastomer obtained by peroxide-crosslinking a fluoroelastomer composition including a peroxide-crosslinkable fluoroelastomer (A), a carbon black (B), and a peroxide cross-linking agent (C), wherein the crosslinked fluoroelastomer has a hardness at 25° C. of 60 to 90, a number of foreign particles selected from the group consisting of lumps of carbon and carbon grit having an aspect ratio of 1.1 or less and a Heywood diameter of 5 μm or more present on a fracture surface obtained by tensile fracture of the crosslinked fluoroelastomer at 170° C. is 10/mm.sup.2 or less, and the fluoroelastomer (A) includes a vinylidene fluoride (VdF) fluoroelastomer.

An aircraft skin panel includes a laminated composite layer and a ground plane coupled to the composite layer, wherein the ground plane is an electrically conductive elastic thermoplastic.

A three-dimensional (3D) printing process utilizing an atmospheric plasma to conduct an electromagnetic energy to fuse extruded successive layers of thermoplastic material having a conductive material is disclosed. A 3D printing system for the 3D printing process is also provided. The 3D printing system includes a 3D printer, an extrusion nozzle, a plasma emitter, and an electromagnetic energy source. The 3D printing process includes the steps of extruding a thermoplastic composite with the extrusion nozzle in successive layers to form a 3D part; directing a substantially evenly distributed plasma onto a predetermined location on the 3D part; and emitting an electromagnetic energy through the plasma. The plasma conducts the electromagnetic energy to the predetermined location on the 3D part. The thermoplastic composite includes a conductive material that generates heat by reacting to the electromagnetic energy.

An exemplary embodiment of the present disclosure provides a fire resistant material and methods of making same, the fire resistant material comprising a material incorporating a mixture comprising carbon nanotubes, nanoclay, and a dispersing agent.

Methods for ultrasonic welding of thermoplastic polymer workpieces and assemblies made therefrom are provided. The method may comprise disposing a first region of a first thermoplastic polymer workpiece and a second region of a second thermoplastic polymer workpiece between an ultrasonic horn and an anvil of an ultrasonic welding device. The first workpiece has a preformed deformation and at least one of the first and/or second workpieces has an adhesive precursor applied thereto. The ultrasonic horn or anvil seats within the preformed deformation. Ultrasonic energy is applied from the ultrasonic horn to create a weld nugget between the first and second workpieces. The assembly thus formed has a green strength sufficient to be further processed immediately. The methods provide a robust weld joint with controlled adhesive bondline thickness.

A method for preparing a conductive biomimetic skin scaffold material with self-repairing function includes the following steps: adding 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride to a homogeneous dispersion of acidified carbon nanotubes, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), and gelatin to cross-link to obtain a conductive composite colloid; and injecting the conductive composite colloid into a mold, aging at −4-4° C. for 12-24 hours, and then soaking in a phosphate-buffered saline (PBS) solution with a pH of 7.0-7.4 for 12-24 hours to obtain the conductive biomimetic skin scaffold material.