SOUND ABSORBING AND HEAT INSULATING MATERIAL, AND METHOD OF MANUFACTURING SAME

• Main Authors: KATAOKA, TOSHINOBU, DATE, TOSHIO, ONOUE, RYOICHI, HIGO, TSUYOSHI, SATO, TOMINORI, MACHINO, FUMIKAZU
• Format: Patent
• Language: English; French; Japanese
• Published: 03.09.1998
• Edition: 6
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; BRAIDING; BUILDING; CEILINGS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; COTTON-WOOL; ELECTRICITY; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSULATION OR OTHER PROTECTION OF BUILDINGS; KNITTING; LACE-MAKING; LIME, MAGNESIA; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; METALLURGY; NON-WOVEN FABRICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REFRACTORIES; ROOFS; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TEXTILES; TREATMENT OF NATURAL STONE; TRIMMINGS; WADDING; WALLS, e.g. PARTITIONS

A sound absorbing and heat insulating material which comprises carbon fiber as its constituent material and which is excellent in durability and compression recovering property, lightweight and excellent in safety against fires and non-electric corrosion. The sound absorbing and heat insulating material is one in which fibers of cotton-like carbon fiber aggregate composed of carbon fibers having an average diameter of 0.5 to 5 mu m and an average fiber length of 1 to 15 mm are bonded by a thermosetting resin. A galvanic cell comprising the sound absorbing and heat insulating material as one of electrodes, an aluminum plate as the other of electrodes, and an electrolyte, which comprises a water solution having sodium chloride of 0.45 weight %, has a galvanic current of 10 mu A or less. L'invention concerne un matériau d'isolation thermique et acoustique, comprenant des fibres de carbone en tant qu'élément constitutif, et présentant un poids faible ainsi que d'excellentes propriétés de durabilité, de reprise élastique après compression, de résistance au feu et à la corrosion non électrochimique. Ce matériau renferme un ensemble de fibres de carbone similaire à du coton, composé de fibres de carbone présentant un diamètre moyen compris entre 0,5 et 5 mu m et une longueur de fibre moyenne comprise entre 1 et 15 mm, lesdites fibres étant liées par une résine thermodurcissable. Une pile galvanique dont l'une des électrodes est constituée dudit matériau d'isolation thermique et acoustique, et l'autre est formée par une plaque d'aluminium, et comprenant en outre un électrolyte constitué d'une solution d'eau renfermant 0,45 % en poids de chlorure de sodium, présente un courant galvanique inférieur ou égal à 10 mu A.