Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use as adhesives, and methods of using the materials for attaching two substrates. The methods typically form an adhesive bond that is hermetically sealed to both substrates. Additionally, the method typically forms a cross-linked bonding material that is flexible.

Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use in repair of electrical wire insulation, flat or ribbon wire harnesses, and flat surfaces comprised of high-performance polymers such as inflatables or solar panels applications. Also provided are methods and devices for repair of electrical insulation.

Abstract: A method for manufacturing an immobilized liquid membrane using a water solution and a hexane solution is provided. The method may include producing a plurality of particles having a distribution of sizes from the water solution, covering the plurality of particles in the hexane solution, creating a plurality of microcapsules each comprising a flexible wall encapsulating a respective one of the plurality of particles, and creating a gap membrane between the plurality of microcapsules, the gap membrane being formed by polymerization reaction between a second portion of the water solution and a second portion of the hexane solution. Each of the plurality of microcapsules and the gap membrane are permeable to a first gas of a mixture of gasses comprising the first gas and a second gas, each of the microcapsules and the gap membrane being substantially impermeable to the second gas.

Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use in repair of electrical wire insulation, flat or ribbon wire harnesses, and flat surfaces comprised of high-performance polymers such as inflatables or solar panels applications. Also provided are methods and devices for repair of electrical insulation.

Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use in repair of electrical wire insulation, flat or ribbon wire harnesses, and flat surfaces comprised of high-performance polymers such as inflatables or solar panels applications. Also provided are methods and devices for repair of electrical insulation.

Abstract: A thermally conductive sheet may include an electrically insulative bottom film, an electrically insulative top film, and an intermediate layer positioned between the bottom film and the top film. The intermediate layer may include a mixture of granulated thermally conductive material and granulated electrically insulating polymer. The granulated electrically insulating polymer is adapted to form a polyimide bridge between the bottom film and the top film.

Abstract: A method for manufacturing an immobilized liquid membrane using a water solution and a hexane solution is provided. The method may include producing a plurality of particles having a distribution of sizes from the water solution, covering the plurality of particles in the hexane solution, creating a plurality of microcapsules each comprising a flexible wall encapsulating a respective one of the plurality of particles, and creating a gap membrane between the plurality of microcapsules, the gap membrane being formed by polymerization reaction between a second portion of the water solution and a second portion of the hexane solution. Each of the plurality of microcapsules and the gap membrane are permeable to a first gas of a mixture of gasses comprising the first gas and a second gas, each of the microcapsules and the gap membrane being substantially impermeable to the second gas.

Abstract: A thermally conductive sheet may include an electrically insulative bottom film, an electrically insulative top film, and an intermediate layer positioned between the bottom film and the top film. The intermediate layer may include a mixture of granulated thermally conductive material and granulated electrically insulating polymer. The granulated electrically insulating polymer is adapted to form a polyimide bridge between the bottom film and the top film.

Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use in repair of electrical wire insulation, flat or ribbon wire harnesses, and flat surfaces comprised of high-performance polymers such as inflatables or solar panels applications. Also provided are methods and devices for repair of electrical insulation.

Abstract: Aqueous droplets encapsulated in a flame retardant polymer are useful in suppressing combustion. Upon exposure to a flame, the encapsulated aqueous droplets rupture and vaporize, removing heat and displacing oxygen to retard the combustion process. The polymer encapsulant, through decomposition, may further add free radicals to the combustion atmosphere, thereby further retarding the combustion process. The encapsulated aqueous droplets may be used as a replacement to halon, water mist and dry powder flame suppression systems.

Abstract: Methods and apparatus utilizing chlorine dioxide and hydrogen peroxide are useful to reduce NOx emissions, as well as SOx and mercury (or other heavy metal) emissions, from combustion flue gas streams.

Abstract: Methods and apparatus utilizing chlorine dioxide and hydrogen peroxide are useful to reduce emissions of NOx, SOx, and heavy metals, e.g., mercury, emissions from combustion flue gas streams.

Abstract: Aqueous droplets encapsulated in a flame retardant polymer are useful in suppressing combustion. Upon exposure to a flame, the encapsulated aqueous droplets rupture and vaporize, removing heat and displacing oxygen to retard the combustion process. A polymer encapsulant, through decomposition, may further add free radicals to the combustion atmosphere, thereby further retarding the combustion process. The encapsulated aqueous droplets may be used as a replacement to halon, water mist, and dry powder flame suppression systems. In one embodiment of the invention, the aqueous droplets include a gelling agent, such as sodium alginate, and are encapsulated in an alginate-based material.

Abstract: A self-healing system for an insulation material initiates a self-repair process by rupturing a plurality of microcapsules disposed on the insulation material. When the plurality of microcapsules are ruptured, reactants within the plurality of microcapsules react to form a replacement polymer in a break of the insulation material. This self-healing system has the ability to repair multiple breaks in a length of insulation material without exhausting the repair properties of the material.

Abstract: A self-healing system for an insulation material initiates a self-repair process by rupturing a plurality of microcapsules disposed on the insulation material. When the plurality of microcapsules are ruptured, reactants within the plurality of microcapsules react to form a replacement polymer in a break of the insulation material. This self-healing system has the ability to repair multiple breaks in a length of insulation material without exhausting the repair properties of the material.

Abstract: Nitric oxide (NO) is oxidized into nitrogen dioxide (NO2) by the high temperature decomposition of a hydrogen peroxide solution to produce the oxidative free radicals, hydroxyl and hydroperoxyl. The hydrogen peroxide solution is impinged upon a heated surface in a stream of nitric oxide where it decomposes to produce the oxidative free radicals. Because the decomposition of the hydrogen peroxide solution occurs within the stream of the nitric oxide, rapid gas-phase oxidation of nitric oxide into nitrogen dioxide occurs.

Abstract: Provided are low-melt polyimides and poly(amic acids) (PAAs) for use in repair of electrical wire insulation, flat or ribbon wire harnesses, and flat surfaces comprised of high-performance polymers such as inflatables or solar panels applications. Also provided are methods and devices for repair of electrical insulation.

Abstract: Nitric oxide in a gaseous stream is converted to nitrogen dioxide using oxidizing species generated through the use of concentrated hydrogen peroxide fed as a monopropellant into a catalyzed thruster assembly. The hydrogen peroxide is preferably stored at stable concentration levels, i.e., approximately 50%-70% by volume, and may be increased in concentration in a continuous process preceding decomposition in the thruster assembly. The exhaust of the thruster assembly, rich in hydroxyl and/or hydroperoxy radicals, may be fed into a stream containing oxidizable components, such as nitric oxide, to facilitate their oxidation.

Abstract: Methods and apparatus utilizing hydrogen peroxide are useful to reduce SOx and mercury (or other heavy metal) emissions from combustion flue gas streams. The methods and apparatus may further be modified to reduce NOx emissions. Continuous concentration of hydrogen peroxide to levels approaching or exceeding propellant-grade hydrogen peroxide facilitates increased system efficiency. In this manner, combustion flue gas streams can be treated for the removal of SOx and heavy metals, while isolating useful by-products streams of sulfuric acid as well as solids for the recovery of the heavy metals. Where removal of NOx emissions is included, nitric acid may also be isolated for use in fertilizer or other industrial applications.

Abstract: Methods and apparatus utilizing chlorine dioxide and hydrogen peroxide are useful to reduce emissions of NOx, SOx, and heavy metals, e.g., mercury, emissions from combustion flue gas streams.