Disclosed are flexible honeycomb structure and manufacturing method for the flexible honeycomb structure, the flexible honeycomb structure including a plurality of core lattice units, wherein each of the plurality of core lattice units is of a polygonal structure, and the plurality of core lattice units combine with each other to form the flexible honeycomb structure; and each of the plurality of core lattice units is of an inclined structure, two adjacent core lattice units in a first direction have opposite directions of inclination, two adjacent core lattice units in a second direction have a same direction of inclination, and the first direction is perpendicular to the second direction. By an adoption of technical solutions of the disclosure, a problem of a honeycomb structure and a composite material having the honeycomb structure generating a saddle shape during a bending process is solved, and a manufacturing cost for eliminating the saddle shape is reduced.

The present application discloses a thermally insulating aerogel vacuum composite panel and a preparation method thereof. The preparation method includes the following steps: (1) mixing TEOS solution and a metal particle, adding a hydrophobic agent, mixing, adding ammonium trifluoroacetate solution dropwise until completely gelating to obtain a metal aerogel precursor; (2) adding the metal aerogel precursor into an acid replacement solution for replacement for 1-24 h to obtain a gel; (3) washing the gel with deionized water to obtain a neutral gel; (4) soaking the neutral gel obtained in step (3) in a first organic resin solvent; (5) pouring the neutral gel into a substrate with honeycomb structure, and aging for re-gelating to obtain a modified panel; (6) drying the modified panel to obtain a honeycomb panel; and (7) aging the honeycomb panel at room temperature for 1-24 h to obtain the vacuum composite panel.

An acoustic panel (for absorbing sound) includes a first sheet with spaced microperforations, a second sheet with microperforations more widely spaced than the microperforations of the first sheet, and a first cellular core sandwiched between the first sheet and the second sheet. The panel can be spaced from a surface, such as a wall. A second cellular core can be provided between the second sheet and a third sheet. The third sheet is preferably solid without microperforations but can have microperforations. Noise Reduction Coefficient (NRC) can be 0.8.

The present disclosure provides a heat-shielding panel having a heat-shielding function and a heat-isolating function, and a prefabricated building constructed by arranging a plurality of heat-shielding panels adjacently. The heat-shielding panel (1) of the present disclosure includes a pair of sheets (10, 20) and an enclosed space (30). The pair of sheets (10, 20) are provided with an exposed surface respectively, and back faces of the pair of sheets (10, 20) are oppositely arranged at intervals. The pair of sheets (10, 20) are formed by heat-shielding sheets (12). The enclosed space is arranged between the pair of sheets (10, 20). The enclosed space is formed by sandwiching a spacer (31) between the pair of sheets (10, 20). A fluid such as air is enclosed in the enclosed space.

For forming a sound absorption/insulation honeycomb panel by stacking an air-permeable material, a honeycomb material filled with a sound absorption material and a reflector, and adhesively joining these materials, it is hard to join the honeycomb material and the air-permeable material adhesively due to a thin wall surface of the honeycomb material and a resultant line to surface adhesive joint therebetween, causing a problem of low adhesive strength. By using a water absorption honeycomb material, an adhesive joint is formed with an adhesive joint area increased by dipping an end of a wall surface of a cell forming the water absorption honeycomb material into a water-soluble adhesive, making the end flexible over a fixed period of time, and then pressing the end strongly against an air-permeable material as a counterpart of the adhesive joint to deform a tip into an inverted T-shape.

A structural component includes at least one wall surrounding a component interior space. The structural component also includes a first cellular structure positioned within the component interior space. The first cellular structure includes a plurality of cells each having a twelve-cornered cross section including twelve sides and twelve corners creating nine internal angles and three external angles.

Disclosed are a hollow pipe-sandwiching metal plate and applications thereof. The hollow pipe-sandwiching metal plate comprises a first panel, a second panel, and multiple hollow pipes between the first panel and the second panel; gaps are arranged among the hollow pipes, and the hollow pipes are connected to the first panel and the second panel by brazing. The present disclosure further includes the applications of the hollow pipe-sandwiching metal plate. The hollow pipe-sandwiching metal plate has advantages, such as light weight, high strength, low stress, high temperature resistance, pressure bearing, thermal insulation and vibration isolation. The metal plate will not deform due to thermal difference, thereby providing permanent service life of the metal plate.

The present disclosure provides acoustic structures and related systems and methods which may be used to dampen or attenuate sound waves, including, for example, noise generated by or emanating from various aspects or components of turbomachines such as turbine engines. These acoustic structures include oblique polyhedral cellular structures, including converging polyhedral cells and diverging polyhedral cells, and related systems and methods of making and using such acoustic structures.

[Problem to be Solved ] To attain an incombustible sound absorption panel by providing incombustibility to a sound absorption/insulation sandwich panel containing a combustible material as a constituting material. [Solution to Problem] Fine powder of chips generated during cutting of a foam material to fill in a honeycomb material is located in a gap between the foam material and a sound absorption surface material. A gap between fibers of the sound absorption surface material is blocked by the chips having been moved by a flow such as a water vapor flow generated from hydrate of the honeycomb material heated on the occurrence of a fire. As a result, an air flow path is limited. Further, carbon dioxide gas generated from the foam material is trapped to reduce an oxygen amount, thereby inhibiting combustion. Usage of an adhesive as a combustible material is reduced.

A method and system for manufacturing a conical shaped acoustic structure. A sheet of acoustical material is cut to form individual pieces using a cutter system. Each individual piece in the individual pieces has a flat pattern for the conical shaped acoustic structure. An individual piece is positioned around a mandrel with a conical shape using an actuator system. Two edges of the individual piece are positioned for joining. The two edges of the individual piece positioned around the mandrel are joined to form the conical shaped acoustic structure.