摘要:
The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation.
摘要:
Fibers with crystallization seeds attached to its surface, method of making such composite fibers by surface treatment of fibers followed by either treating such fibers with premade crystallization seeds or by precipitation and direct crystallization of seeds onto pretreated fibers. Controlling and tuning the properties of inorganic binder compositions with fiber- bound crystallization seeds and thereby generating inorganic binder compositions with tailor-made characteristics.
摘要:
This invention relates to a synthetically derived zinc phlogopite platelets, of superior platelet diameter, effect pigments comprising such synthetically derived platelets and methods of forming said substrates. More specifically the disclosure describes an improved hydrothermal synthesis of zinc phlogopite suitable as a platelets for interference pigments, barrier and flame retardant applications.
摘要:
The present invention provides bi-component polymeric macrofibers having an ethylene-vinyl alcohol (EVOH) outer component and a core or second component comprising a polymer blend of polypropylene grafted with maleic anhydride and polypropylene or polyethylene. The bi-component polymeric macrofibers provide excellent fiber reinforcement in concrete applications.
摘要:
Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids.
摘要:
Die Erfindung betrifft ein Granulat aus agglomeriertem reaktiven Schüttgut und einer Bindemittelmatrix, wobei die Bindemittelmatrix ein organisches oder anorganisches Salz als Bindemittel enthält.
摘要:
An exemplary method includes introducing a treatment fluid comprising nano-hydraulic cement into a subterranean formation, wherein the nano-hydraulic cement comprises cement particles having a mean particle size of less than 310 nanometers. The treatment fluid may include a drilling fluid, a completion fluid, a stimulation fluid, a well clean-up fluid or a cement composition. Also disclosed is a composition comprising a well treatment fluid comprising nano-hydraulic cement, wherein the nano-hydraulic cement comprises cement particles having a mean particle size of less than 310 nanometers.
摘要:
The invention relates to a coating material comprising a binding agent, at least one filler containing particles having a size and/or surface roughness of 100 pm or less, and a photocatalytically active agent. According to the invention, the binding agent is at least partially decomposed by a photocatalytic action, and a microstructured, self-cleaning surface is formed.
摘要:
The present invention relates to a powder mortar optionally mixed with water, including a mineral hydraulic binder, at least 75% in mortar powder volume of thermally insulating additives substantially in the form of beads and having a thermal conductivity lower than or equal to 55 mW/m.K. The thermally insulating additives are water-tight, and at least 20% in mortar powder volume of said additives, referred to as insulating microspheres, are of the single-cell type, i.e. with a closed outer shell defining a core comprising a single inner cavity, and are micronic with a maximum average outer characteristic size lower than 0.5 mm. The invention also relates to such a mortar as a layer or in the form of a plate or brick or in any other appropriate form.