Abstract: A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20 and has a particle distribution in which 90% of the particles have a particle size not greater than 500 micrometers.

Abstract: Underfill materials include inorganic fill materials (e.g., functionalized CNT's, organo clay, ZnO) that are functionalized reactive with other organic constituents (e.g., organics with epoxy groups, amine groups, or PMDA). The underfill materials also beneficially include polyhedral oligomeric silsesquioxane and/or dendritic siloxane groups that are functionalized with a reactive group (e.g., glycidyl) that reacts with other components of an epoxy system of the underfill.

Abstract: Disclosed herein is a water-based erasable ink for use in a writing instrument. The ink comprises platy-like pigment particles, film formers and an aqueous vehicle. Also disclosed are writing instruments using such inks as well as comprising a reservoir containing a water based erasable ink having a non-shear-thinning composition and a porous fiber nib in fluid communication with this reservoir. Related methods of forming an erasable marking are also disclosed.

Abstract: Adhesive paste of polymer resin, fugitive liquid and particulate filler with round edges provides improved performance characteristics.

Abstract: Continuous ceramic (e.g., silicon carbide) nanofibers (502, 602, 604, 606, 608, 702, 704, 1102, 1104) which are optionally p or n type doped are manufactured by electrospinning a polymeric ceramic precursor to produce fine strands of polymeric ceramic precursor which are then pyrolized. The ceramic nanofibers may be used in a variety of applications not limited to reinforced composite materials (400), thermoelectric generators (600, 700) and high temperature particulate filters (1200).

Abstract: Conductive compositions which are useful as thermally conductive compositions and may also be useful as electrically conductive compositions are provided. The compositions include a conductive particle constituent in combination with a sintering aid which can, for example be a compound of the same metal in the nanometal, an organo-metallic, a metalorganic salt, mercaptan and/or resinate. In some embodiments the conductive particles include a small amount of nanoscale (<200 nm) particles. The compositions exhibit increased thermal conductivity.

Abstract: Disclosed herein is a water-based erasable ink for use in a writing instrument. The ink comprises platy-like pigment particles, film formers and an aqueous vehicle. Also disclosed are writing instruments using such inks as well as comprising a reservoir containing a water based erasable ink having a non-shear-thinning composition and a porous fiber nib in fluid communication with this reservoir. Related methods of forming an erasable marking are also disclosed.

Abstract: A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20.

Abstract: A composite material including a thermoplastic polymer matrix and a non-carbonaceous resistivity modifier dispersed in the thermoplastic polymer matrix. The composite material has a surface resistivity of about 1.0×104 ohm/sq to about 1.0×1011 ohm/sq and at least a portion of a surface of the composite material has a surface roughness (Ra) not greater than about 500 nm.

Abstract: A composite material includes polyimide material, a particulate metal oxide dispersed in the polyimide material in an amount between about 0.1 wt % and about 20.0 wt %, and a carbonaceous material dispersed in the polyimide material in an amount between about 0.0 wt % and about 45.0 wt %.

Abstract: A composite material including a thermoplastic polymer matrix and a non-carbonaceous resistivity modifier dispersed in the thermoplastic polymer matrix. The composite material has a surface resistivity of about 1.0×104 ohm/sq to about 1.0×1011 ohm/sq and at least a portion of a surface of the composite material has a surface roughness (Ra) not greater than about 500 nm.

Abstract: A method of forming an electrostatic dissipative composite material includes preparing a mixture comprising a polyamic acid precursor and a non-carbonaceous resistivity modifier. The polyamic acid precursor reacts to form polyamic acid. The method also includes dehydrating the polyamic acid to form polyimide. The polyimide forms a polymer matrix in which the non-carbonaceous resistivity modifier is dispersed.

Abstract: A composite material includes polyimide and an additive. The composite material has a glass transition temperature at least about 5% greater than the glass transition temperature of the polyimide absent the additive, the composite material has a thermal oxidative performance at least about 5% relative to the polyimide absent the additive, the thermal oxidative performance based on exposure to air at a temperature of 371° C. and at atmospheric pressure for a period of 120 hours.

Abstract: A composite material includes polyimide and about 0.1 wt % to about 50.0 wt % metal oxide. The composite material has a thermal oxidative performance at least about 5% relative to the polyimide absent metal oxide, the thermal oxidative performance determined based on exposure to air at atmospheric pressure and a temperature of 371° C. for a period of 120 hours.

Abstract: A composite material includes polyimide and at least about 55 wt % non-carbonaceous filler. The composite material has a tensile strength at least about 44.9 MPa.

Abstract: The disclosure is directed to a thermal interface material including an elastomeric polymer matrix, a first thermally conductive filler including spheroidal particles having a first median particle size not less than about 20 microns and a second thermally conductive filler including particles having a second median particle size not greater than about 10 microns.

Abstract: Erasable inks are provided for use in a writing instruments. In one aspect, the inks include a solvent, and, dispersed in the solvent as a colorant, a pigment having a flake-like morphology, the ink being substantially free of other colorants.

Abstract: A flame resistant material is disclosed, which includes a polymer composite. The polymer composite includes iron oxide in an amount at least about 0.1 wt. % and not greater than about 5.0 wt. % of the polymer composite, hydrated metal oxide in an amount at least about 0.1 wt. % and not greater than about 5.0 wt. % of the polymer composite, zinc borate in an amount at least about 0.1 wt. % and not greater than about 5.0 wt. % of the polymer composite, and polymer.

Abstract: A thermal interface material is disclosed, including a polymer component, a phase component mixed with the polymer component, and a surfactant mixed with the component and the phase change component.

Abstract: Erasable inks are provided for use in a writing instruments. In one aspect, the inks include a solvent, and, dispersed in the solvent as a colorant, a pigment having a flake-like morphology, the ink being substantially free of other colorants.