A mineral wool insulating product which comprises a layer, notably a continuous layer, of mixed mineral wool fibres, the mixed mineral wool fibres comprising a binder, first mineral wool fibres and second mineral wool fibres, the first mineral wool fibres and the second mineral wool fibres have a difference of softening point.

The present invention relates to a process for producing insulating products based on mineral fibers, in particular on mineral wool, comprising providing a first binder composition containing (a) from 50% to 85% by weight of water, preferably from 70 to 82% of water (b) from 10% to 45% by weight, preferably 15 to 35% by weight of a saccharide component containing sucrose, (c) from 3% to 15% by weight, preferably from 5 to 12% by weight of one or more ammonium salts or primary amine salts of an acid, preparing a second binder composition comprising the dilution of the first aqueous binder composition with water to a solids content of between 3 and 7% by weight, applying the second binder composition to mineral fibers, forming an assembly of mineral fibers coated with the second binder composition, and heating the assembly of coated mineral fibers so as to form an assembly of mineral fibers bound by an insoluble binder,
said process being characterized in that the first aqueous binder composition has a pH of less than 5.5, in that the ammonium salt or primary amine salt is a salt of strong acid or a salt of an acid having a pKa of less than or equal to 2.2, and in that the first and second binder compositions are devoid of salts of weak acids having at least a pKa of between 2.5 and 6.9.

A composition for glass, alkaline earth aluminosilicate glass, and a preparation method therefor and applications thereof. Based on the total number of moles of each component and the counting of oxides, the composition contains 68-73 mol % of SiO.sub.2, 11.5-15 mol % of Al.sub.2O.sub.3, 2-6 mol % of MgO, 2.5-7.5 mol % of CaO, 0-3 mol % of SrO, 2-7 mol % of BaO, 0-4 mol % of ZnO and 0.05-1.5 mol % of TiO.sub.2. The glass has a high strain point, a high Young's modulus, a high specific modulus, a high Vickers hardness, high chemical stability, a high refractive index and high glass formation stability, and has a lower forming temperature, a lower melting temperature, a lower thermal expansion coefficient, a lower surface tension, a lower density, and low glass manufacturing difficulty.

A mineral wool insulating product which comprises a layer, notably a continuous layer, of mixed mineral wool fibres, the mixed mineral wool fibres comprising a binder, first mineral wool fibres and second mineral wool fibres, the first mineral wool fibres and the second mineral wool fibres have a difference of softening point.

Provided is a method for manufacturing an aerogel blanket having improved processability by reducing manufacturing time and cost, the method including the steps of mixing a precursor material, an acid catalyst and a hydrous alcohol to prepare a sol, depositing a substrate in the sol, and reacting with a gaseous silazane-based compound to form a gel and to perform aging and surface modification reaction simultaneously to form a wet gel blanket, and drying the wet gel blanket to manufacture an aerogel blanket.

A reinforcing fiber bundle base material has a reinforcing fiber bundle surface to which a sizing agent adheres, wherein a reinforcing fiber bundle has a fiber number per unit width of 600 fibers/mm or more and less than 1,600 fibers/mm while the reinforcing fiber bundle has a drape level of 120 mm or more and 240 mm or less.

A fiber-reinforced fabric, composite materials formed from such fabrics, and methods of making the fiber-reinforced fabric or composite materials, are provided. The fabrics and composite materials demonstrate improved fatigue performance relative to conventional fiber-reinforced fabrics.

Gypsum panels and methods for their manufacture are provided herein. The gypsum panels include a gypsum core having a first surface and a second opposed surface and a first fiberglass mat associated with the first surface of the gypsum core, such that gypsum from the gypsum core penetrates at least a portion of the first fiberglass mat.

Gypsum panels and methods for their manufacture are provided herein. The gypsum panels include a gypsum core having a first surface and a second opposed surface and a first fiberglass mat associated with the first surface of the gypsum core, such that gypsum from the gypsum core penetrates at least a portion of the first fiberglass mat.

Gypsum panels and methods for their manufacture are provided herein. The gypsum panels include a gypsum core having a first surface and a second opposed surface and a first fiberglass mat associated with the first surface of the gypsum core, such that gypsum from the gypsum core penetrates at least a portion of the first fiberglass mat.