Abstract:
A carbon foam material with improved graphitizability is formed by including a graphitization promoting additive into the carbon foam. The graphitization promoting additive greatly improves the graphitic structure of the carbon foam resulting in a carbon foam with much greater thermal and electrical conductivities. This inventive foam may be created by introducing the graphitization promoting additive during the catalysis of a phenol-aldehyde mixture to a form phenolic resin or during the conversion of the phenolic resin to a phenolic foam. Alternatively, the graphitization promoting additive can be fixed onto a preformed carbon foam.
Abstract:
In a process to design high temperature cement sluries, the temperature stable phases (anorthite, wairakite) are selected; aluminum modifiers and silica oxides are added to the dry cement so that the elemental composition of the blend corresponds to the phases selected; the control of the particle size distribution and the relative amount of those minerals allow their addition at high concentration while leaving the slurry easily mixable and pumpable; and the kinetics of the targeted phases formation is then controlled by adjusting the crystallinity and the particles sizes of the different solids.
Abstract:
The present invention relates to geopolymer materials curable within 24 hours at a temperature of at least 40°C comprising an alkaline activator having a molarity of 1.0 to 10 M and an additive selected from sugars and derivatives thereof and/or organic acids and salts thereof having a molarity of 0.001 to 0.2 M. The geopolymer compositions of the present invention have sufficient strength to be used for construction purposes. The present invention further relates to a method for manufacturing a geopolymer product comprising the geopolymer materials of the present invention and to geopolymer products obtained by the method of the present invention.
Abstract:
Die vorliegende Erfindung betrifft eine Zusammensetzung zur Herstellung eines Feuerleichtsteins, enthaltend wenigstens ein Aluminiumsilikat und/oder ein CaIcium-Aluminiumsilikat sowie ein anorganisches Bindemittel, wobei sich die Zusammensetzung dadurch auszeichnet, dass sie einen Gehalt an Calciumsilikaten von 5 bis 25 Gew.-% bezogen auf die trockene Zusammensetzung aufweist. Die Erfindung betrifft außerdem einen Feuerleichtstein, dessen Verwendung sowie ein Verfahren zu dessen Herstellung.
Abstract:
Die Erfindung betrifft einen Versatz zur Herstellung eines ungeformten feuerfesten keramischen Erzeugnisses, ein Verfahren zur Herstellung eines gebrannten feuerfesten keramischen Erzeugnisses, ein gebranntes feuerfestes keramisches Erzeugnis sowie die Verwendung eines ungeformten feuerfesten keramischen Erzeugnisses.
Abstract:
Mixture for construction of a pulp mixture intended as a base to manufacture prefabricators resp. thermal insulation materials with using of waste, consisting of at least 5% of volume of cellulose mixture and a maximum of 95% of cement with sand volume and industrial dry matter with the benefit of 10% of volume mixture of cellulose and 90% of cement with sand volume and industrial dry mass with the benefit of 90% of volume mixture of cellulose and 10% of cement with sand volume and industrial dry mass, while a mixture of cellulose consists of 100% of volume of cellulose fibers or recycled paper, or at least 30% of volume of cellulose fibers or recycled paper, with the addition of 5 to 10% of volume of water glass and / or 2 to 15% of volume of natural resins and / or 5 to 25% of volume of kaolin and / or 5 to 20% of chalk volume.
Abstract:
Mixture for construction of a pulp mixture intended as a base to manufacture prefabricators resp. thermal insulation materials with using of waste, consisting of at least 5% of volume of cellulose mixture and a maximum of 95% of cement with sand volume and industrial dry matter with the benefit of 10% of volume mixture of cellulose and 90% of cement with sand volume and industrial dry mass with the benefit of 90% of volume mixture of cellulose and 10% of cement with sand volume and industrial dry mass, while a mixture of cellulose consists of 100% of volume of cellulose fibers or recycled paper, or at least 30% of volume of cellulose fibers or recycled paper, with the addition of 5 to 10% of volume of water glass and / or 2 to 15% of volume of natural resins and / or 5 to 25% of volume of kaolin and / or 5 to 20% of chalk volume.