Abstract: Disclosed is a composite comprising: from about 50 wt. % to about 99 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 0.1 wt. % to 15 wt. % of a carbon fiber filler, wherein the carbon fiber has a bulk density of at least 500 g/l and a volume electrical resistivity of less than 2,000 ??#cm, with individual filaments that have a length-to-diameter ratio of at least 300, wherein a 3.175 mm thick molded sample of the composite exhibits a Transmission of less than 15% of incident microwave radiation when observed according to a Free Space method, measured at frequencies of 75 to 110 GHz, wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composite.

Abstract: A thermoplastic composition includes: (a) from about 82 wt % to about 92 wt % of a thermoplastic resin including poly(phenylene ether) and polystyrene; and (b) from about 3 wt % to about 13 wt % of a carbon-based filler. The carbon-based filler has a specific surface area of at least 650 square meters per gram (m2/g) and an Oil Absorption Number of at least 250 milliliter per 100 gram (ml/100 g). The composition has a dielectric constant ?? of between 3.5 and 10 and a dissipation loss ?? of between 0.25 and 5, as measured at a frequency of between about 75 gigahertz (GHz) and about 110 GHz. A ?-inch-thick molded sample of the composition exhibits a Percent Absorbed Power measured in Transmission mode of at least 50% when observed according to a Free Space method at frequencies from about 75 GHz to about 110 GHz.

Abstract: Disclosed is a composite comprising from about 50 wt. % to about 97 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 3 wt. % to about 15 wt. % of a carbon-based filler, wherein the carbon-based filler has a primary surface area of from about 500 to about 1000 m2/g, wherein the composite exhibits a dielectric constant ?? of between 5 and 30 and a dissipation loss ?? of between 0.5 and 45, measured at frequencies between about 10 and about 120 GHz. A molded sample of the composite exhibits a percent reflected power measured in transmission mode of at least 15% when observed according to a Free Space method at frequencies from about 75 GHz to 110 GHz.

Abstract: Disclosed is a composite from about 50 wt. % to about 90 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polycarbonate polysiloxane copolymer; and from about 10 wt. % to about 50 wt. % of a carbon-based filler. The composite exhibits a dielectric constant ?? of between 5 and 20 and a dissipation loss ?? of between 0.1 and 6, measured at frequencies between about 10 and 120 GHz.

Abstract: Thermoplastic compositions include: (a) a thermoplastic polymer including a polycarbonate component; (b) a poly(carbonate-siloxane) copolymer; and (c) from 4 wt % to 25 wt % carbon black. The composition has a total siloxane content of from 2 wt % to 14 wt %. The thermoplastic compositions exhibit improved physical properties as compared to compositions that do not include the poly(carbonate-siloxane) copolymer, including volume resistivity, melt viscosity, impact strength, puncture impact energy and surface resistivity.

Abstract: Thermoplastic compositions include: (a) a thermoplastic polymer including a polycarbonate component; (b) a poly(carbonate-siloxane) copolymer; and (c) from 4 wt % to 25 wt % carbon black. The composition has a total siloxane content of from 2 wt % to 14 wt %. The thermoplastic compositions exhibit improved physical properties as compared to compositions that do not include the poly(carbonate-siloxane) copolymer, including volume resistivity, melt viscosity, impact strength, puncture impact energy and surface resistivity.

Abstract: A film comprising a copolycarbonate, wherein the film is a uniaxially-stretched, extruded film comprising at least one film region having: an average thickness of more than 0 and less than 14 micrometers with a standard deviation of 0.8 micrometer to 1.6 micrometers, a surface having a surface roughness average of less than 0.04 micrometer as measured by optical profilometry, a dielectric constant at 1 kHz and room temperature of at least 2.7, a dissipation factor at 1 kHz and room temperature of 1% or less, and a breakdown strength of at least 620 Volt/micrometer; and the copolycarbonate has a Tg of greater than 180° C. and comprises carbonate units derived from a bisphenol compound of the formula (3).

Abstract: A method of processing a continuous sheet of polymer material. The method includes routing the continuous sheet of polymer material from a first spool and along at least a first heated roller and a second heated roller, heating the continuous sheet of polymer material to a first temperature on the first heated roller and the second heated roller, and controlling a rotational speed of the first heated roller and the second heated roller such that the continuous sheet of polymer material is stretched when routed from the second heated roller to the first heated roller.

Abstract: In general, the present invention is directed to a continuous method of making a polymer foam by using a polymer having a first monomeric component and a second monomeric component. The method employs a tandem type extruder having a first extruder and a second extruder. The method disclosed herein can provide a foam having a desired cell size, cell density, porosity, foam density, and/or thermal conductivity, etc. In turn, the polymer foams produced according to the present method can have numerous applications, such as thermal insulation applications for appliances including ovens, freezers, refrigerators, etc.

Abstract: A method for forming a bi-axially stretched dielectric film having a thickness less than 5 microns is presented. The method includes stretching a dielectric material along a transverse direction to form the bi-axially stretched dielectric film having a thickness less than 5 microns. The dielectric material is heated using infrared radiation during at least a duration of the stretching step. The dielectric material includes a substantially amorphous polymer having a glass transition temperature greater than 140 degrees Celsius.

Abstract: A dielectric film that includes a sheet fabricated from a dielectric material. The sheet has a thickness of less than about 5 microns, wherein the dielectric material includes an amorphous polymer, and wherein the dielectric material is substantially free of a solvent.

Abstract: A film comprising a copolycarbonate, wherein the film is a uniaxially-stretched, extruded film comprising at least one film region having: an average thickness of more than 0 and less than 14 micrometers with a standard deviation of 0.8 micrometer to 1.6 micrometers, a surface having a surface roughness average of less than 0.04 micrometer as measured by optical profilometry, a dielectric constant at 1 kHz and room temperature of at least 2.7, a dissipation factor at 1 kHz and room temperature of 1% or less, and a breakdown strength of at least 620 Volt/micrometer; and the copolycarbonate has a Tg of greater than 180° C. and comprises carbonate units derived from a bisphenol compound of the formula (3).

Abstract: A system for treatment of a gaseous medium, comprises an extruder having a barrel. The extruder further comprises a first inlet port, a second inlet port, and a plurality of outlet ports coupled to the barrel. The first inlet port is configured for feeding a lean sorbent, the second inlet port is configured for feeding a gaseous medium, and the plurality of outlet ports are configured for releasing a plurality of components removed from the gaseous medium. Further, the extruder comprises a plurality of helical elements coupled to a plurality of kneading elements, mounted on a shaft, and disposed within the barrel. The barrel and the plurality of helical and kneading elements together form an absorption unit and a desorption unit. The first and second inlet ports are formed in the absorption unit and the plurality of outlet ports are formed in the absorption and desorption units.

Abstract: Disclosed herein are nanocomposite materials, devices thereof and methods thereof with a dielectric constant and corona resistance while having an increased or substantially maintained energy density, breakdown strength and/or dissipation factor relative to the polymer.

Abstract: A system for treatment of a gaseous medium, comprises an extruder having a barrel. The extruder further comprises a first inlet port, a second inlet port, and a plurality of outlet ports coupled to the barrel. The first inlet port is configured for feeding a lean sorbent, the second inlet port is configured for feeding a gaseous medium, and the plurality of outlet ports are configured for releasing a plurality of components removed from the gaseous medium. Further, the extruder comprises a plurality of helical elements coupled to a plurality of kneading elements, mounted on a shaft, and disposed within the barrel. The barrel and the plurality of helical and kneading elements together form an absorption unit and a desorption unit. The first and second inlet ports are formed in the absorption unit and the plurality of outlet ports are formed in the absorption and desorption units.

Abstract: A method for recovering carbon dioxide (CO2) from a gas stream is disclosed. The method includes the step of reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound. The solid material is then input to a transporting desorption unit, where a decarboxylation reaction takes place, to release substantially pure CO2 gas. The CO2 gas can then be collected and used or transported in any desired way. The transporting desorption unit includes an upstream section at atmospheric pressure and a downstream section at a pressure greater than atmospheric pressure, wherein the upstream section and the downstream section are separated by a hydraulic dynamic seal. A related apparatus including the transporting desorption unit for recovering carbon dioxide (CO2) from a gas stream is also described herein.

Abstract: Disclosed herein are nanocomposite materials, devices thereof and methods thereof with a dielectric constant and corona resistance while having an increased or substantially maintained energy density, breakdown strength and/or dissipation factor relative to the polymer.

Abstract: A uniaxially-stretched, extruded film comprising a polycarbonate, wherein the extruded film has at least one wrinkle-free region having a first surface and a second surface, the at least one extruded wrinkle-free region comprising: an extruded thickness of more than 0 and less than 7 micrometer, and a variation of the thickness of the film of +/?10% of the thickness of the film, and a surface roughness average that is less than +/?3% of the average thickness of the film as measured by optional profilometery; and further wherein the film has a dielectric constant at 1 kHz and room temperature of at least 2.7; a dissipation factor at 1 kHz and room temperature of 1% or less; and a breakdown strength of at least 300 Volt/micrometer.

Abstract: A uniaxially-stretched, extruded film comprising a polyetherimide and less than 5 weight percent of fluorine, wherein the extruded film has at least one wrinkle-free region having a first surface and a second surface, the at least one extruded wrinkle-free region comprising: an extruded thickness of more than 0 and less than 13 micrometers, and a variation of the thickness of the film of +/?10% of the thickness of the film, and a surface roughness average that is less than +/?3% of the average thickness of the film as measured by optional profilometery; and further wherein the film has a dielectric constant at 1 kHz and room temperature of at least 2.7; a dissipation factor at 1 kHz and room temperature of 1% or less; and a breakdown strength of at least 300 Volts/micrometer.

Abstract: A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a C1-10 hydrocarbon substituted with CN, F, SO2, SO, S, SO3, SO3?, PO, PO2H, PO3H, PO2?, PO3?2, CO, CO2?, CO2H, CONH, CONH2, NHCOHN, OCONH, OCO2, N, NH, NH2, NO2, CSNH, CSNH2, NHCSNH, OTi(OR4)3, or OSi(OR4)3 or combinations of these, wherein R4 is a C1-10 aliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.