摘要:
A cementitious composition may include polyvinyl alcohol, high alumina cement, water, a metallic coagent, a peroxide crosslinking initiator, and an organic acid retardant. A molded article may be manufactured from the cementitious composition by preparing a hydrogel pre-polymer blend of saponified polyvinyl alcohol acetate (PVAA) with greater than or equal to approximately 85% saponified PVAA, and water, mixing the hydrogel pre-polymer blend with high alumina cement (HAC) using a high shear mixing process, mixing in a metallic coagent and a peroxide crosslinking initiator, mixing in an organic acid retardant, and hot press molding the mixture.
摘要:
A molded plastic core structure acceptable to numerous uses and characterized by high structural strength to weight ratio. The structure typically comprises a two-sided array of cell-like receptacles having inwardly sloping walls that form floors. Receptacles in one side are inverted relative to receptacles in the opposite side and are inter-nested between one another to minimize the volume of plastic used. The walls and floors can be circular, square or triangular in plan view. Where square or triangular, the walls include both major and minor wall sections alternatingly interspersed with one another. Two or more core structures can be joined to one another with the receptacles of one panel being aligned with the receptacles of the joined other panel to form closed, syntactic cells that give the resulting structure high enclosed volume to surface area and weight ratios.
摘要:
The plastic structural article includes an elongated tubular shell having opposed end sections, a middle section there between and an interior cavity. The interior cavity has a foam core situated therein. The foam core comprises steam expandable polymer beads which when expanded substantially fill the interior cavity. The bead and shell are of a similar plastic composition enabling the articles to be reground and recycled. An apparatus for forming the articles and an associated method of manufacture are also disclosed.
摘要:
A mounting unit for mounting a solar panel on a roof includes a base having a first flange and a second flange that extend laterally from the base and a mounting surface positioned above the base via walls that connect the mounting surface and the base. The mounting surface is couplable with the solar panel to elevate and orient the solar panel above a surface of the roof. The mounting unit also includes a flexible membrane material that is coupled with the first flange of the base and that extends laterally therefrom. The mounting unit further includes an adhesive or tape that is applied to an underside of the second flange so that the second flange is free of the flexible membrane material. The flexible membrane material is couplable with the roof and the adhesive or tape is adherable to the roof to secure the mounting unit to the roof.
摘要:
A bird deterrent has a base and at least one branched spike extending from the base. The branching can occur anywhere along the spike, and a single branch point can give rise to multiple branches. Spikes can have multiple branches. The various branches can be of any suitable length(s), and can be oriented in any suitable direction(s).
摘要:
Disclosed are foam compositions and processes to form mixed tannin-phenolic foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a mixed-resin derived from a phenol, a tannin, and a first monomer, and wherein the plurality of cells comprises a plurality of open-cells and a plurality of closed-cells with an open-cell content measured according to ASTM D6226-5, of less than 50%. The foam composition also comprises a discontinuous phase disposed in at least a portion of the plurality of closed-cells, the discontinuous phase comprising one or more blowing agents.
摘要:
A formed ligneous body having a clear layer integrally formed on the side of its front surface, with a predetermined thickness and a high degree of adhesiveness, and a decorative design surface presenting a deep and excellent appearance, and a method of advantageously producing a formed ligneous body presenting an excellent decorative design. The formed ligneous body has a ligneous substrate whose front surface serves as the decorative design surface and the translucent clear layer integrally formed on the decorative design surface, wherein the ligneous substrate is formed by subjecting a ligneous material impregnated with a thermosetting resin material to a flow molding process, and the clear layer is formed by heating and pressing at least one fibrous sheet constituted by plant fibers and impregnated with a thermosetting resin material, together with the ligneous material during the flow molding process, so that each of the fibrous sheet is made transparent.
摘要:
A method, a device and a computer program for manufacturing a pre-insulated skeleton framing segment for a building to be constructed, wherein an assembly with a hollow space is provided, to which a data carrier is fitted including data from which a quantity of raw materials required for forming a foam insulation layer of a thickness in the hollow space can be determined, which quantity is calculated, and which raw materials are inserted in the hollow space, and foam and harden there during a period.
摘要:
The present invention relates to those articles that include any kind of agglomerated artificial stone and polymerisable resin, such as tiles or slabs, to be used as construction material, characterised for consisting of different strati or veins, of heterogeneous variable mass that provide a special aesthetic effect similar to the natural stone products.
摘要:
The invention relates to an insulation element, in particular for the acoustic insulation of an opening and/or of a cavity in a vehicle or building, having a carrier element and an expendable material. The carrier element has a plurality of through-holes, wherein only one surface of the carrier element is covered at least partially with expandable material, and the expandable material at least partially fills the through-holes. The invention relates furthermore to an insulation element produced therefrom, the use of the same and a method for the acoustic insulation and/or reinforcement of an opening or a cavity in a land, air or water vehicle or in a building.