Abstract:
The present invention relates to methods for forming bonded particulate refractory materials for use in metal-working, comprising the steps of providing a fine particulate metal oxide, providing an aqueous alkaline composition, providing a particulate refractory mould material, mixing the said fine particulate metal oxide, the said aqueous alkaline composition and the said particulate refractory mould material, and shooting the obtained mixture in a core shooter. Substantially all the water included in the obtained mixture is derived from the aqueous alkaline solution and optionally the surfactant. Also part of the present invention are materials and articles obtained according to the method, as well as particulate compositions for use in the method.
Abstract:
A method of producing a pressed board product of a predetermined thickness specification includes subjecting a predetermined mass per unit area of a precursor mixture to pressing in a press, at a predetermined pressing force with or without the application of heat. The precursor mixture comprises particulate material, an alkali metal silicate, polyvinyl alcohol, and a geopolymerisation promoter for promoting geopolymerisation of the alkali metal silicate. The method includes, prior to and/or during and/or after subjecting the precursor mixture to the pressing, allowing at least partial setting by geopolymerization of the alkali metal silicate.
Abstract:
Compositions and methods for treating porous substrates are disclosed. An example of such a composition includes sodium acetate, which forms hygroscopic crystals that change size as they absorb and desorb water. The crystals partially seal the pores to reduce water permeability and effectively scrub the pores as the substrate experiences wet and dry cycles.
Abstract:
A process for providing inorganic polymer ceramic-like materials. The process comprises providing a first material which comprises at least one non-oxide ceramic powder, and, at least one metal oxide, and providing a second material which comprises a caustic slurry composed of alkaline water and a solvent, and, combining the materials with stirring. There is also provided a composition of matter provided by the above-mentioned process which is a chemically bonded ceramic polymer comprising metal oxide and non-oxide ceramic bonds.
Abstract:
Die Erfindung beschreibt einen nichtbrennbaren Werkstoff, der ein oder mehrere organische Stoffe (2), insbesondere pflanzliche organische Stoffe, wie Holz oder Holzspäne, umfasst. Der oder die organischen Stoffe sind mit Wasser (3) und einem oder mehreren weiteren anorganischen Materialien (4) zu einem formbaren oder in Form gebrachten Verbundwerkstoff vermischt und z.B. als Formbauteil (10) bereitgestellt.
Abstract:
A method of manufacturing a lightweight material is provided. The method comprises a) dispersing a solid waste comprising at least one of a contaminated solid waste, marine clay, mud, waste glass, or ash obtained from incineration of waste in an aqueous reagent to form a dispersion; b) mixing the dispersion with an additive comprising a foaming agent and a metal silicate to form a mixture; and c) curing the mixture to obtain the lightweight material. A lightweight material manufactured by the method, and use of the method in the manufacture of a lightweight aggregate, a thermal insulative panel, a lightweight partition wall, or a lightweight brick are also provided.
Abstract:
Treatment fluids and methods for treating a subterranean formation include introducing a treatment fluid into a subterranean formation, the treatment fluid containing a nanocrystalline cellulose. The treatment fluid may be a fracturing fluid, well control fluid, well kill fluid, well cementing fluid, acid fracturing fluid, acid diverting fluid, a stimulation fluid, a sand control fluid, a completion fluid, a wellbore consolidation fluid, a remediation treatment fluid, a spacer fluid, a drilling fluid, a frac-packing fluid, water conformance fluid or a gravel packing fluid.
Abstract:
The invention relates to stable molded bodies and plates which are used as a lightweight material for equipping building envelopes with thermal insulation or as a local fire-protection measure. The stable molded bodies and plates are produced on the basis of expanded perlite, from a homogeneous mixture, which then hardens. Specifically, such a plate is composed of a prepared homogeneous mixture, having a composition of at least 40% by volume of glazed balls made from expanded silica sands, which balls are closed-cell at the surface thereof and are filled with air. The balls have a density of only 50 to 400 grams/liter, such that normally no measures for hydrophobing are necessary because of the closed-cell, unfractured perlite. The remaining volume consists of a mineral or organic binding agent, which was prepared and to which a foaming agent was added during the preparation thereof, such that the plate as a whole has a density between 120 kg/m3 and 1200 kg/m3, depending on the specific composition of all components, because of the air in the expanded perlite and the air from the foaming agent. Embodied as insulating plates, the plates are used to create wall structures on the inside or outside of buildings, in that the insulating plates (8) are applied to a cleaned interior or exterior wall of a building that has been leveled with a plaster and that afterwards has been provided with adhesive mortar. If necessary, the plates can be mechanically fastened to the building wall and afterwards a base coat (9) having a glass-based reinforcing woven-fabric mesh (10) can be applied, and finally a final coat can be applied, which is optionally provided with a coat of paint.
Abstract:
Die Erfindung betrifft einen wasserbasierten Gleitlack und einem Lösemittelgleitlack für die Beschichtung von Glasformen, Glasvorformen und dazugehöriger Bauteile, ein Verfahren zum Beschichten von Glasformen, Glasvorformen und dazugehöriger Bauteile sowie die Verwendung des Gleitlacks zum Beschichten von Glasformen, Glasvorformen und dazugehöriger Bauteile. Der Gleitlack umfasst mindestens ein anorganisches Bindemittel oder Silikonharz, mindestens einen Festschmierstoff, mindestens einen Füllstoff, oder eine Hartkeramik, Additive und Wasser.