METHOD FOR PRODUCING A SPINNABLE SILICA SOL MATERIAL
In a process for producing a spinnable silica sol material, a viscosity value VS is stipulated which the spinnable silica sol material should have after ripening. A viscosity value VR corresponding to VS which the silica sol material has before ripening is ascertained. An aqueous acid solution and a...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
28.05.2014
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Subjects | |
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Abstract | In a process for producing a spinnable silica sol material, a viscosity value VS is stipulated which the spinnable silica sol material should have after ripening. A viscosity value VR corresponding to VS which the silica sol material has before ripening is ascertained. An aqueous acid solution and a hydrolysable silicon compound are combined. The combined mixture is evaporated to give a single-phase solution while measuring the viscosity of the mixture and the evaporation process is terminated upon reaching the viscosity value VR. The single-phase solution thus obtained is then ripened to give a silica sol material with the viscosity value VS. The process exhibits reduced waste and more exact reproducibility of the spinning sol properties during the synthesis and an increased space-time yield in the production of biologically degradable and/or resorbable fibers and nonwoven fabrics. |
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AbstractList | In a process for producing a spinnable silica sol material, a viscosity value VS is stipulated which the spinnable silica sol material should have after ripening. A viscosity value VR corresponding to VS which the silica sol material has before ripening is ascertained. An aqueous acid solution and a hydrolysable silicon compound are combined. The combined mixture is evaporated to give a single-phase solution while measuring the viscosity of the mixture and the evaporation process is terminated upon reaching the viscosity value VR. The single-phase solution thus obtained is then ripened to give a silica sol material with the viscosity value VS. The process exhibits reduced waste and more exact reproducibility of the spinning sol properties during the synthesis and an increased space-time yield in the production of biologically degradable and/or resorbable fibers and nonwoven fabrics. |
Author | MAHR, BASTIAN BARTH, EKKEHARD |
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Discipline | Medicine Chemistry Sciences |
DocumentTitleAlternate | VERFAHREN ZUR HERSTELLUNG EINES VERSPINNBAREN KIESELSOL-MATERIALS PROCÉDÉ DE PRODUCTION D'UN MATÉRIAU À BASE DE SOL DE SILICE FILABLE |
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Snippet | In a process for producing a spinnable silica sol material, a viscosity value VS is stipulated which the spinnable silica sol material should have after... |
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SubjectTerms | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE |
Title | METHOD FOR PRODUCING A SPINNABLE SILICA SOL MATERIAL |
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