The present invention provides compositions and methods related to aerogel materials, including polyimide-based aerogels. In particular, aerogel materials optimized to have certain physical and chemical properties such as flexural and compressive strength are provided. In some embodiments, the aerogel materials can be at least partially carbonized.

A method of making an aircraft acoustic structural panel (10) begins with preforming a core honeycomb laminate (12) having preformed foam (3) bonded inside cells (14) thereof by a distinct adhesive (2). The preformed honeycomb laminate (12) is then stacked between opposite top and bottom structural outer laminates (16,18). The stacked honeycomb laminate (12) and outer structural laminates (16,18) are then compressed together under heat and pressure into a unitary structural panel (10) having the core honeycomb laminate (12) integrally bonded between outer skins (20,22). The outer laminates (16,18) may include imperforate acoustic septums (4) bounding the core honeycomb laminate (12) followed by an outer honeycomb (5) and structural fiber layers (6,7,8) defining the outer skins (20,22).

An ultra violet stable polyester membrane with a polyacrylic coating on one side and a coated pressure sensitive adhesive coating on its other side capable of allowing water vapor to pass through it. The pressure sensitive adhesive is formed of a copolymer comprising a backbone of n-butyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate which is mixed with at least one surfactant and emulsified to produce air bubbles which form pores when the copolymer is set with about 80% to about 90% of the pore sizes ranging from about 200 microns to about 300 microns and being uniformly distributed to form a flow path through the pressure sensitive adhesive.

A low dielectric, low loss radome comprising microspheres integrated into a matrix. The microspheres reduce overall dielectric constant, whereby the radome has a dielectric constant less than 2.5 through a thickness of the radome.

To provide a decorative molded article that enables clear visual recognition of an arbitrary pattern on a surface of a skin material when a light source is turned on. The decorative molded article is a decorative molded article capable of being illuminated by a light source on a back surface and configured so that a skin material having an OD value of 1 or more and 3.5 or less, a light-shielding layer having an arbitrary pattern, and a transparent molded body are laminated together in sequence, and so that a color difference ΔE between a light emitting unit and a non-light emitting unit of the skin material is 50 or more when the light source is turned on. The decorative molded article may further include a nonwoven fabric between the skin material and the light-shielding layer, or between the light-shielding layer and the molded body.

A method of making an aircraft acoustic structural panel (10) begins with preforming a core honeycomb laminate (12) having preformed foam (3) bonded inside cells (14) thereof by a distinct adhesive (2). The preformed honeycomb laminate (12) is then stacked between opposite top and bottom structural outer laminates (16,18). The stacked honeycomb laminate (12) and outer structural laminates (16,18) are then compressed together under heat and pressure into a unitary structural panel (10) having the core honeycomb laminate (12) integrally bonded between outer skins (20,22). The outer laminates (16,18) may include imperforate acoustic septums (4) bounding the core honeycomb laminate (12) followed by an outer honeycomb (5) and structural fiber layers (6,7,8) defining the outer skins (20,22).

A solid state foaming process for generating a microcellular foam sheet for use in forming a container is provided includes a pre-foaming treatment phase prior to a solid state impregnation and foaming phase. The solid state microcellular foam sheet includes a central foamed section defining a foam layer within the microcellular foam sheet having a first population of cells within which are interspersed a second population of cells.

The disclosure relates to the technical field of air ducts, and in particular to a weather-resistant plant fiber-reinforced air duct with a multi-layer wall, and a preparation method thereof. The weather-resistant plant fiber-reinforced air duct with a multi-layer wall includes an outer isolation layer, a plant fiber-reinforced thermal insulation layer, a moisture-proof layer and a sealing layer that are arranged in sequence from inside to outside. The plant fiber-reinforced thermal insulation layer is prepared by the paving and laminating of surface fiber foam materials and core fiber foam materials or by the winding and molding of glass fibers and plant fibers. An outer isolation layer is adopted to protect the plant fiber-reinforced thermal insulation layer from being damaged by rubbing, and the moisture-proof layer and the sealing layer are adopted to ensure that the air does not leak out.

A laminated foam composite backer board comprising: a foam core; a first adhesive layer on each face of the foam core; a polymeric film layer on the outer face of each first adhesive layer; a second adhesive layer on the outer face of each polymeric film layer; and a non-woven fabric layer on the outer face of each second adhesive layer.

The present animal cooling mat apparatus includes a mat shell, at least one coolant sheet, at least one cushioning pad, and at least one foam pad. The coolant sheet is removably located within the mat shell, with the cushioning pad removably located within the mat shell above the at least one coolant sheet and the insulating pad is located within the mat shell below the at least one coolant sheet. The coolant sheet provides a heat sink to rapidly cool an animal, while the cushioning pad facilitates heat transfer and the insulating pad reduces the amount of ambient heat transferred from the environment. Multiple apparatuses may be combined to accommodate larger animals.