摘要:
The invention relates to a wall element (1), particularly for covering building façades, consisting of a sandwich-like material composite constructed from metal cover sheets (2.1, 2.2) and at least one core layer (2.3) arranged between the cover sheets. In order for such a wall element to be harmless to health, relatively light, stable and long-lived and for it to be produced relatively economically, the core layer (2.3) according to the invention is formed from a fibre-containing sealing material that is temperature-resistant up to at least 600°C, the core layer (2.3) having a thickness of up to 2.0 mm.
摘要:
A rigid press-fit cap (1) is provided for a motor vehicle, in particular, for the engine (4) of a motor vehicle. According to the present invention, the cap (1) comprises a first layer (2) made of a metal material and at least a second layer (3) comprising polyamide 11. Preferably, the second layer is made entirely of polyamide 11 and, even more preferably, entirely covers the first layer.
摘要:
In one aspect, articles are described herein comprising wear-resistant claddings. An article described herein, in some embodiments, comprises a metallic substrate and a cladding adhered to the substrate, the cladding including a metal matrix composite layer comprising at least one hard particle tile having a pore structure infiltrated with matrix metal or matrix alloy. Infiltration of the pore structure of the hard particle tile by the matrix metal or alloy can render the tile fully dense or substantially fully dense.
摘要:
Architected materials with superior energy absorption properties when loaded in compression. In several embodiments such materials are formed from micro-truss structures composed of interpenetrating tubes in a volume between a first surface and a second surface. The stress-strain response of these structures, for compressive loads applied to the two surfaces, is tailored by arranging for some but not all of the tubes to extend to both surfaces, adjusting the number of layers of repeated unit cells in the structure, arranging for the nodes to be offset from alignment along lines normal to the surfaces, or including multiple interlocking micro-truss structures.
摘要:
Disclosed are foam compositions and processes to form closed-cell tannin-based foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a tannin-based resin derived from a tannin and a monomer, wherein the monomer comprises furfural, glyoxal, acetaldehyde, 5-hydroxymethylfurfural, acrolein, levulinate esters, sugars, 2,5-furandicarboxylic acid, 2,5-furandicarboxylic aldehyde, urea, difurfural (DFF), furfuryl alcohol, glycerol, sorbitol, lignin, or mixtures thereof, 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:
The invention relates to a sandwich material comprising at least 3 layers, the layers being a first cover layer, an intermediate layer and a second cover layer. The intermediate layer is in the form of at least one segmented sheet and comprises a mixture of at least one polymer and cellulose fibres. Sheets may comprise susceptors. Processes for manufacturing the sandwich material are also described.
摘要:
The invention relates to the construction of a sealed connection between an elastomeric or synthetic polymer flexible pipe or hose and a metallic coupling member (13'). The coupling member surrounds an armour layer (9') at a free end of the flexible pipe or hose. A sealing area (3') is defined by a recessed portion of the pipe coupling (13') into which a sealing material (23) is introduced. An inner liner layer (1') of the flexible pipe or hose may extend into the sealing area (3') where it is bonded to the sealing material. The sealing material (23) and the inner liner layer (1') may each be comprised of a semi- crystalline thermoplastic material. Furthermore, a reinforcement material (2') be provided in the inner liner layer (1').