Abstract:
An electrically conductive composition comprises a polymeric foam and carbon nanotubes. The composition has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. In another embodiment, an electrically conductive elastomeric composition comprises an elastomer and carbon nanotubes, and has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. The polymeric foams and elastomers retain their desirable physical properties, such as compressibility, flexibility and compression set resistance. They are of particular use as that articles provide electromagnetic shielding and/or electrostatic dissipation, especially for applications involving complicated geometries, such as in computers, personal digital assistants, cell phones, medical diagnostics, and other wireless digital devices, electronic goods such as cassette and digital versatile disk players, as well as in automobiles, ships and aircraft, and the like, where high strength to weight ratios are desirable.
Abstract:
An electrically conductive composition comprises a polymeric foam and carbon nanotubes. The composition has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. In another embodiment, an electrically conductive elastomeric composition comprises an elastomer and carbon nanotubes, and has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. The polymeric foams and elastomers retain their desirable physical properties, such as compressibility, flexibility and compression set resistance. They are of particular use as that articles provide electromagnetic shielding and/or electrostatic dissipation, especially for applications involving complicated geometries, such as in computers, personal digital assistants, cell phones, medical diagnostics, and other wireless digital devices, electronic goods such as cassette and digital versatile disk players, as well as in automobiles, ships and aircraft, and the like, where high strength to weight ratios are desirable.
Abstract:
Compositions for the formation of temperature resistant, tough, flame retardant polyurethane foams, comprising a low VOC polyisocyanate component wherein the isocyanate is a low functionality isocyanate; a low VOC active-hydrogen containing component substantially reactive with the low functionality isocyanate to form a polyurethane; a surfactant composition; and a catalyst component, wherein the total mass loss of the foam is less than 1% by weight as measured by ASTM E595. The foams are useful as gasketing materials, for example.
Abstract:
An electrically conductive composition comprises a polymeric foam and carbon nanotubes. The composition has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. In another embodiment, an electrically conductive elastomeric composition comprises an elastomer and carbon nanotubes, and has a volume resistivity of about 10 ohm-cm to about 10 ohm-cm. The polymeric foams and elastomers retain their desirable physical properties, such as compressibility, flexibility and compression set resistance. They are of particular use as that articles provide electromagnetic shielding and/or electrostatic dissipation, especially for applications involving complicated geometries, such as in computers, personal digital assistants, cell phones, medical diagnostics, and other wireless digital devices, electronic goods such as cassette and digital versatile disk players, as well as in automobiles, ships and aircraft, and the like, where high strength to weight ratios are desirable.
Abstract:
Compositions for the formation of temperature resistant, tough, flame retardant polyurethane foams, comprising a low VOC polyisocyanate component wherein the isocyanate is a low functionality isocyanate; a low VOC active-hydrogen containing component substantially reactive with the low functionality isocyanate to form a polyurethane; a surfactant composition; and a catalyst component, wherein the total mass loss of the foam is less than 1% by weight as measured by ASTM E595. The foams are useful as gasketing materials, for example.
Abstract:
Compositions for the formation of temperature resistant, tough, flame retardant polyurethane foams, comprising a low VOC polyisocyanate component wherein the isocyanate is a low functionality isocyanate; a low VOC active-hydrogen containing component substantially reactive with the low functionality isocyanate to form a polyurethane; a surfactant composition; and a catalyst component, wherein the total mass loss of the foam is less than 1% by weight as measured by ASTM E595. The foams are useful as gasketing materials, for example.
Abstract:
Compositions for the formation of temperature resistant, tough, flame retardant polyurethane foams, comprising a low VOC polyisocyanate component wherein the isocyanate is a low functionality isocyanate; a low VOC active-hydrogen containing component substantially reactive with the low functionality isocyanate to form a polyurethane; a surfactant composition; and a catalyst component, wherein the total mass loss of the foam is less than 1% by weight as measured by ASTM E595. The foams are useful as gasketing materials, for example.
Abstract:
A luminous touch sensor includes a light guide (21) having a major surface and at least one light emitting diode (25) optically coupled to the edge of the light guide. The light emitting diode emits light into the light guide, which redirects the light through or away from the major surface. A capacitive or piezoresistive touch sensing element (23) is in contact with the major surface. In other embodiments of the invention, the light guide is a dielectric layer in a capacitive touch sensor.