Abstract:
The present invention relates to a method for manufacturing a plurality of bodies (12) made of a porous material derived from precursors of the porous material in a sol-gel process. The method comprises (i) filling precursors of the porous material into a mold (10) defining the shape of the body (12), wherein the precursors include at least two reactive components (CA, CB) and a solvent (S) and forming a gel body, (ii) repeating step (i) so as to form a plurality of gel bodies (12), (iii) removing the gel bodies (12) from the mold (10) after a predetermined time in which the gel bodies (12) are formed from the precursors of the porous material, (iv) arranging the gel bodies (12) adjacent to one another, (v) providing a spacer (14) between two adjacent gel bodies (12) so as to provide a clearance therebetween, and (vi) removing the solvent (S) from the gel bodies (12).
Abstract:
A molding based on a monolithic organic aerogel having a density in the range from 60 to 300 kg/m³ and a thermal conductivity in the range from 12 to 17.8 mW/m*K, more than 30 Vol.-% of pores with a diameter of less than 150 nm and more than 20 Vol.-% of pores with a diameter of less than 27 nm, based on the total pore volume and a process for preparing the molding by compression.
Abstract:
The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b), wherein composition (A) comprises a catalyst system (CS) at least comprising a catalyst component (C1) selected from the group consisting of ammonium salts and phosphonium salts, and an acid comprising a phosphor containing acid group as catalyst component (C2). The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels and vacuum insulation systems, in particular in interior or exterior thermal insulation systems as well as for the insulation of refrigerators and freezers and in water tank or ice maker insulation systems.
Abstract:
The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b), wherein the composition (A) comprises at least one compound (af) comprising phosphorous and at least one functional group which is reactive towards isocyanates and at least one component (au) selected from the group consisting of urea, biuret, and derivatives of urea and biuret. The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum panels, as well as drying agent for gases, such as air, in filter systems, in adsorption heat pumps, as insulation material in damp and wet rooms, or to avoid mold formation.
Abstract:
The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b), wherein the composition (A) comprises at least one compound (af) comprising phosphorous and at least one functional group which is reactive towards isocyanates. The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels, in particular in interior or exterior thermal insulation systems as well as in water tank or ice maker insulation systems.
Abstract:
The present invention relates to a process for preparing a porous material, at least providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b), wherein the composition (A) comprises a catalyst system (CS) comprising a catalyst component (C1) selected from the group consisting of alkali metal and earth alkali metal, ammonium, ionic liquid salts of a saturated or unsaturated monocarboxylic acid and a carboxylic acid as catalyst component (C2). The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels, in particular in interior or exterior thermal insulation systems as well as in water tank or ice maker insulation systems.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Verbundelements, mindestens umfassenddas Bereitstellen einer Deckschicht mit einer unbeschichteten Oberfläche und einer beschichteten Oberfläche, die zumindest teilweisemit einer Zusammensetzung (B) umfassend mindestens ein anorganisches Material, beschichtet ist, eine Behandlung der unbeschichteten Oberfläche der Deckschicht,sowie das Auftragen einer Zusammensetzung (Z2), die zur Herstellung eines Polyurethan-und/oder Polyisocyanuratschaums geeignet ist, auf die behandelte Oberfläche der Deckschicht. Weiter betrifft die vorliegende Erfindung ein Verbundelement, erhältlich oder erhalten nach einem erfindungsgemäßen Verfahren sowie die Verwendung eines Verbundelements erhältlich oder erhalten nach einem erfindungsgemäßen Verfahren oder eines erfindungsgemäßen Verbundelements als Isolationsmaterial oder im Fassadenbau.
Abstract:
The present invention relates to a process for producing porous materials, which comprises providing a mixture comprising a composition (A) comprising components suitable to form an organic gel and a solvent mixture (B), reacting the components in the composition (A) in the presence of the solvent mixture (B) to form a gel and drying of the gel, wherein the solvent mixture (B) is a mixture of at least two solvents and the solvent mixture has a Hansen solubility parameter δ H in the range of 3.0 to 5.0 MPa- 1 , determined using the parameter δ H of each solvent of the solvent mixture (B). The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels.
Abstract:
The present invention relates to a method for manufacturing a body made of a porous material derived from precursors of the porous material in a sol-gel process, comprising (i) providing a mold (10), wherein the mold (10) comprises a lower part (12) defining an interior volume for receiving the precursors of the porous material, wherein the interior volume defines the shape of the body to be manufactured, wherein the lower part (12)comprises a first opening (20), and at least a first opening (20) through which the body isremovable from the lower part (12), wherein surfaces of the lower part (12) facing the interior volume are at least partially provided with a coating (26) made of a material being electrically dissipative and non-sticky to the precursors of the porous materialand/or the body, (ii) filling precursors of the porous material into the lower part (12) in a first inert or ventilated region (52), wherein the precursors include two reactive components (CA, CB) and a solvent (S), (iii)removing the body from the lower part (12) through the first opening (20) after a predetermined time in which the body is formed from the precursors of the porous material, (iv) disposing the body onto a support (66), and (v) removing the solvent (S) from the body.
Abstract:
Die Erfindung betrifft ein Sandwich-Bauelement aus mindestens zwei voneinander beabstandeten, im wesentlichen parallel zueinander angeordneten Baustoffplatten mit einem Polyurethan-Schaumkern zwischen den beabstandeten Baustoffplatten, wobei das Verhältnis des höchsten gemessenen Druck-E-Moduls des Polyurethan-Schaumkerns in einer Raumrichtung, die parallel zu den Baustoffplatten orientiert ist, zum Druck-E-Modul des Polyurethan-Schaumkerns in einer Raumrichtung, die senkrecht zu den Baustoffplatten orientiert ist, weniger als 1,7 beträgt. Zur Herstellung der Sandwich-Bauelementewird ein Gemisch aus (a) mindestens einer Polyisocyanatkomponente, (b) mindestens einer Komponente, die mindestens eine mehrfunktionelle gegenüber Isocyanaten reaktive Verbindung umfasst, und (c) mindestens einem Treibmittel nach dem Hochdruckinjektionsverfahren in einen Hohlraum zwischen beabstandeten Baustoffplatten eingebracht. Das Verfahren ermöglicht die Herstellung von Sandwich-Bauelementen, deren Schaumkern verringerte Anisotropie bei guten Dämmwerten aufweist.