C03C2214/02

METHOD FOR MANUFACTURING GLASS LINING PRODUCT
20220340479 · 2022-10-27 ·

A method for manufacturing a glass lining product including: a step of forming a ground coat layer having a thickness of 0.1 to 0.5 mm composed of one layer or a plurality of layers by applying a first glaze on a surface of a metal substrate and firing the first glaze; a step of forming an intermediate layer having a thickness of 0.4 to 1.1 mm composed of one layer or a plurality of layers by applying a second glaze on the ground coat layer and firing the second glaze; and a step of forming a cover coat layer having a thickness of 0.1 to 1.3 mm composed of one layer or a plurality of layers by applying a third glaze on the intermediate layer and firing the third glaze.

Filament winding apparatus and method for ceramic matrix composites

An apparatus for making a composite article includes a monofilament feed track adapted to carry a spaced array of ceramic monofilament strands, a fiber yarn feed track adapted to carry a spaced array of fiber yarn tows impregnated with a plurality of glass particulates, a mandrel, and a heater assembly. The mandrel is adapted to wind together individual glass-impregnated fiber yarn strands and individual ceramic monofilament strands to form a dual-fiber weave. The heater assembly is adapted to heat at least the glass particulates such that pressure from the wound array of ceramic monofilaments is sufficient to consolidate the glass particulates and the dual-fiber weave into a dual-fiber ceramic matrix composite (CMC).

Method of fabricating a glass-ceramic matrix composite

A method of fabricating a glass matrix composite includes providing a fiber preform in a cavity of a die tooling, the fiber preform circumscribing an interior region; providing a parison of glass matrix material in the interior region, the glass matrix material having a first viscosity; introducing pressurized inert gas into the parison to outwardly inflate the parison against the fiber preform; and while under pressure from the pressurized inert gas, decreasing the first viscosity of the glass matrix material to a second viscosity. The pressure and the second viscosity cause the glass matrix material to flow and infiltrate into the fiber preform to thereby form a consolidated workpiece. The consolidated workpiece is then cooled to form a glass matrix composite.

SURFACE TEXTURE ENHANCED GLASS-CERAMIC MATRIX COMPOSITE HEAT EXCHANGER

A method of manufacturing a heat exchanger core from glass ceramic matrix composite includes placing one or more reinforcing fibers around one or more mandrels into a mold cavity. A glass matrix material infiltrates the one or more reinforcing fibers to produce an infiltrated core and the one or more mandrels is removed to create one or more passages passing through the infiltrated core.

METHOD OF FABRICATING A GLASS-CERAMIC MATRIX COMPOSITE
20210246063 · 2021-08-12 ·

A method of fabricating a glass matrix composite includes providing a fiber preform in a cavity of a die tooling, the fiber preform circumscribing an interior region; providing a parison of glass matrix material in the interior region, the glass matrix material having a first viscosity; introducing pressurized inert gas into the parison to outwardly inflate the parison against the fiber preform; and while under pressure from the pressurized inert gas, decreasing the first viscosity of the glass matrix material to a second viscosity. The pressure and the second viscosity cause the glass matrix material to flow and infiltrate into the fiber preform to thereby form a consolidated workpiece. The consolidated workpiece is then cooled to form a glass matrix composite.

Mineral fiber roof cover boards

Composite roofing structures can include mineral fiber roof cover boards with high concentration of mineral wool or mineral wool and perlite. The roofing structure may include: a roof cover board including a dried base mat including: 8-25% mineral wool, 40-65% perlite, 9-15% binder, 9-15% cellulosic fiber, and 0.25-2% sizing agent, all % by weight; an insulation layer; and a roofing membrane. The roof cover board is over the insulation layer, the roofing membrane is over the roof cover board. The roof cover board is attached to the insulation layer. The roofing membrane is attached to the roof cover board. Alternatively dried base mat may include: 30-70% mineral wool, 10-50% perlite, 5-15% binder, 2-20% cellulosic fiber, and 0.25-2% sizing agent. Alternatively the dried base mat may include: 60-90% mineral wool, 0-10% fiber, 0-10% perlite, 4-10% binder, 0-5% gypsum, and 0.25-2% sizing agent.

Optical nanocomposites for laser applications

An optical nanocomposite containing optically active crystals and suitable to be drawn into fiber form, dissolved into solution and subsequently deposited as a thin film, or used as a bulk optical component. This invention integrates compositional tailoring to enable matching of optical properties (index, dispersion, do/dT), specialized dispersion methods to ensure homogeneous physical dispersion of NCs within the glass matrix during preparation, while minimizing agglomeration and mismatch of coefficient of thermal expansion. By tailoring the base glass composition's viscosity versus temperature profile, the resulting bulk nanocomposite can be further formed to create an optical fiber, while maintaining physical dispersion of NCs, avoiding segregation of the NCs.

METHOD FOR LASER PROCESSING A TRANSPARENT MATERIAL
20200324368 · 2020-10-15 · ·

Systems and methods are described for forming continuous laser filaments in transparent materials. A burst of ultrafast laser pulses is focused such that a beam waist is formed external to the material being processed without forming an external plasma channel, while a sufficient energy density is formed within an extended region within the material to support the formation of a continuous filament, without causing optical breakdown within the material. Filaments formed according to this method may exhibit lengths exceeding up to 10 mm. In some embodiments, an aberrated optical focusing element is employed to produce an external beam waist while producing distributed focusing of the incident beam within the material. Various systems are described that facilitate the formation of filament arrays within transparent substrates for cleaving/singulation and/or marking. Optical monitoring of the filaments may be employed to provide feedback to facilitate active control of the process.

Ionically-conductive reinforced glass ceramic separators/solid electrolytes

Fiber-reinforced separators/solid electrolytes suitable for use in a cell employing an anode comprising an alkali metal are disclosed. Such fiber-reinforced separators/solid electrolytes may be at least partially amorphous and prepared by compacting, at elevated temperatures, powders of an ion-conducting composition appropriate to the anode alkali metal. The separators/solid electrolytes may employ discrete high aspect ratio fibers and fiber mats or plate-like mineral particles to reinforce the separator solid electrolyte. The reinforcing fibers may be inorganic, such as silica-based glass, or organic, such as a thermoplastic. In the case of thermoplastic fiber-reinforced separators/solid electrolytes, any of a wide range of thermoplastic compositions may be selected provided the glass transition temperature of the polymer reinforcement composition is selected to be higher than the glass transition temperature of the amorphous portion of the separator/solid electrolyte.

Synthesis of effective carbon nanoreinforcements for structural applications

A methodology is disclosed to produce nanostructured carbon particles that act as effective reinforcements. The process is conducted in the solid state at close to ambient conditions. The carbon nanostructures produced under this discovery are nanostructured and are synthesized by mechanical means at standard conditions. The benefit of this processing methodology is that those carbon nanostructures can be used as effective reinforcements for composites of various matrices. As example, are to demonstrate its effectiveness the following matrices were including in testing: ceramic, metallic, and polymeric (organic and inorganic), as well as bio-polymers. The reinforcements have been introduced in those matrices at room and elevated temperatures. The raw material is carbon soot that is a byproduct and hence abundant and cheaper than pristine carbon alternatives (e.g. nanotubes, graphene).