摘要:
The invention relates to a method for producing PUR/PIR rigid foam materials, having the steps of reacting at least one polyester polyol (a), which can be obtained by reacting a.1.) at least one cyclic carboxylic acid anhydride; a.2.) at least one low-molecular diol with a molecular mass of 62 to 450 Da; and a.3.) at least one alkylene oxide; by esterifying the components a.1.) and a.2.) and subsequently oxalkylating the resulting carboxylic acid half-ester using component a.3.); wherein at least the oxalkylation is carried out using a.4.) at least one amine catalyst in which (the) nitrogen atom(s) is/are part of an aromatic ring system, with (b) at least one polyisocyanate-containing component, (c) at least one propellant, (d) at least one or more catalysts, (e) optionally at least one flameproofing agent and/or other auxiliary agents, and (f) optionally at least one additional compound with at least two groups which are reactive towards isocyanates and which differ from polyester polyol (a). The invention also relates to a PUR/PIR rigid foam material which can be obtained using a method according to the invention, to a composite element comprising the PUR/PIR rigid foam material according to the invention, at least one cover layer selected from concrete, wood, press board, aluminum, copper, steel, stainless steel, paper, non-wovens, and plastic, and multilayer composites or a combination thereof. The invention also relates to the use of the PUR/PIR rigid foam materials according to the invention or the composite element according to the invention for heat damping.
摘要:
A glass element having a thickness from 25 µm to 125 µm, a first primary surface, a second primary surface, and a compressive stress region extending from the first primary surface to a first depth, the region defined by a compressive stress σI of at least about 100 MPa at the first primary surface. Further, the glass element has a stress profile such that when the glass element is bent to a target bend radius of from 1 mm to 20 mm, with the center of curvature on the side of the second primary surface so as to induce a bending stress σB at the first primary surface, σI + σB
摘要:
The invention relates to line elements (600) consisting of a multi-layer inner element (IE) and an outer element (AE), wherein the inner element (IE) and the outer element (AE) are in contact with each other at points, at lines, over part of the surfaces thereof, or over the full surfaces thereof. Furthermore, a frictional contact protection means extending over the component length is provided, or a frictional layer (121) is provided in the contact region of the inner element (IE) and the outer element (AE). The wear of the outer element (AE) caused by friction can thereby be minimized.
摘要:
A method of coating an expandable item (10) such as a pressure vessel or process vessel used for instance in the off shore oil industry. A compressible flexible intermediate layer (14) is provided on the item (10), and a support member (18) is embedded in the intermediate layer (14). The support member (18) comprises an open framework base (20) and a plurality of projecting members upstanding therefrom and extending out of the intermediate layer (14) away from the item (10). A thermally insulating coating layer (12) is applied over the intermediate layer (14) such that the projecting members (22) extend into the coating layer (12), and are wholly located in the coating layer (12).
摘要:
A system and method are provided for forming body structures including energy filters/shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The filters or components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.
摘要:
A system and method are provided for forming body structures including energy filters/shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The filters or components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.
摘要:
A labeling assembly is shown and described herein. A labeling assembly for laminating labels may include a label sheet, a laminating sheet and an alignment member. The alignment member may allow folding of the label sheet and laminating sheet. The label sheet may include a facestock sheet and a liner sheet. Labels may be pre-cut in the facestock sheet. The laminating sheet may include a laminae film sheet and a liner sheet. Protective covers may be pre-cut in the liner sheet and laminae overlays may be pre-cut in the laminae film sheet. The protective covers may be removed to expose an adhesive portion of the laminae overlay. The label sheet and the laminating sheet may be folded onto each other at the alignment member. The laminae overlay may adhere to the label to form a removable laminated label.
摘要:
An acoustic liner for a turbine engine, the acoustic liner includes a support layer that includes a set of partitioned cavities with open faces, a perforated sheet that includes a set of perforations with corresponding inlets, the perforated sheet supported by the support layer such that perforations are in overlying relationship with the open faces to form paired perforations and cavities that define acoustic resonator cells, and a coating applied to the perforated sheet.
摘要:
The invention relates to a method for producing a pack by means of a packaging machine, wherein a film is sealed on a filled pack box, each pack box being conveyed intermittently, by a specific advancing movement, along the packaging machine. The invention also relates to a packaging machine for producing a pack, comprising a sealing station which seals a film on a pack box and which conveys the pack box intermittently by an advancing movement.