Abstract:
A reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance capabilities that are at least comparable to (if not better than) commercial fire rated gypsum panels with a much greater gypsum content, weight and density.
Abstract:
Dispositif d'enduction métallique de fibres, par exemple de fibres céramiques, par voie liquide, comportant un creuset (2) contenant un bain de métal liquide (3) à travers lequel est tirée une fibre (1) pour être enduite par ce dernier, ledit dispositif comportant en outre un système de refroidissement (11) positionné en aval dudit bain de métal pour solidifier la gaine métallique créée autour de ladite fibre par capillarité, caractérisé en ce que ledit système de refroidissement comporte au moins une buse d'éjection d'un gaz comprimé en direction du fil enduit (le), et en ce que le système est dimensionné pour solidifier le métal à la périphérie du fil enduit (le) sur une course d'une longueur inférieure ou égale à 200 mm.
Abstract:
The invention proposes the viability of using carbon nanofibers for cement moulds such as pastes, mortars, and concretes, with the purpose of using such composites to monitor deformations in order to detect the deformation thereof due to external activities with no sensor embedded or attached. The procedure is based on changing the electrical resistance of the carbon nanofiber/cement composites when subjected to stress. A proportional change is made to the contact stress of the matrix with the nanofiber and the level of stresses to which it is subjected; this is undoubtedly interesting when talking about an intelligent structure. The composite is adaptable to control structural vibrations, heavy traffic monitoring, movement detection in building areas, and building security in real time, amongst others.
Abstract:
Compositions include an aerogel component and have low thermal conductivity. Methods for preparing slurries or composites include, for example combining the aerogel component with a surfactant, binder and other ingredients, such as, for instance, fibers. The compositions can be slurries that can be used in coating applications or self supporting rigid composites.
Abstract:
Compositions include an aerogel component and have low thermal conductivity. Methods for preparing slurries or composites include, for example combining the aerogel component with a surfactant, binder and other ingredients, such as, for instance, fibers. The compositions can be slurries that can be used in coating applications or self supporting rigid composites.
Abstract:
A method of preparing a light weight concrete composition using expanded polymer particles that includes a) replacing from about 10 to about 50 volume percent of the coarse aggregate in the concrete composition with prepuff particles; and b) preparing the concrete composition by combining ingredients comprising 3 - 40 volume percent cement, 1 - 50 volume percent fine aggregate, 0 - 40 volume percent coarse aggregate, 10 - 22 volume percent water, and 5 - 40 volume percent of prepuff particles. The prepuff particles have an average particle diameter of from 0.2 mm to 5 mm, a density of from 0.02 g/cc to 0.56 g/cc, an aspect ratio of from 1 to 3. The concrete composition has a density of from about 90 to about 135 lb./ft3 and after it is set for 28 days, has a compressive strength of at least 1800 psi as tested according to ASTM C39.
Abstract:
This invention provides a method of securing to a substrate a metal object having an uncoated surface, which method comprises contacting said substrate and said surface with an unset hydraulic cement composition and allowing said composition to set, characterized in that said surface is an aluminium surface and in that said composition comprises pulverulent aplite.
Abstract:
A three-dimensional composite reinforcement, a three-dimensionally reinforced multifunctional nanocomposite, and methods of manufacture of each are disclosed. The three dimensional reinforcement compπses a two dimensional fiber cloth upon which carbon nanotubes have been grown, approximately perpendicular to the plane of the fiber cloth. The nanocomposite comprises the three-dimensional reinforcement and a surrounding matrix material. Examples illustrate improvements in the through-thickness mechanical, thermal, and electrical properties of the nanocomposite, in addition to substantial improvements in geometrical stability upon temperature changes and vibrational damping, compared to baseline composites reinforced with the two- dimensional fiber cloth alone. Embodiments of the nanocomposite may also be configured to perform multiple functions simultaneously, such as bearing a thermal or mechanical load simultaneously or bearing a mechanical load while also monitoring the state of damage within the nanocomposite.
Abstract:
L'objet de l'invention est un cadre arrière d'une entrée d'air d'une nacelle d'un aéronef, caractérisé en ce qu''il est réalisé en partie en matériau composite à base d'une résine géopolymérique renforcée par des fibres, et comprend au moins une partie (56) entourant un orifice prévu pour le passage d'un système de dégivrage en matériau composite à base d'une résine géopolymérique renforcée par des fibres et au moins une autre partie (58) métallique.
Abstract:
An inorganic composite is formed from a solution of KH 2 PO 4 mixed with H 2 O, which is then mixed with a metal oxide and a filler material. The mixture of the solution with the metal oxide and filler material forms a flowable slurry. Fibers are then introduced into the slurry. The fibers chemically or mechanically bond with the slurry. The slurry is then cured to form a composite with fibers bonded with the inorganic cement matrix.
Abstract translation:无机复合材料由与H 2 O 2混合的KH 2 O 3 PO 4的溶液形成,然后与H 2 O 2混合,然后与金属氧化物和 填充材料。 溶液与金属氧化物和填料的混合物形成可流动的浆料。 然后将纤维引入浆料中。 纤维与浆料化学或机械结合。 然后将浆料固化以形成与无机水泥基质结合的纤维的复合材料。