Composite materials having superior material properties useful as impact absorbing devices can be fabricated by embedding a lattice structure (e.g., polymer lattice structure) within a foam, so that the foam reinforces the lattice structure under impact. Materials and dimensions of the foam and the lattice structure may be selected to achieve composite materials having tailored impact absorbing elastic and/or viscoelastic responses over a wide range of temperatures.

An adsorption temporary fixing material comprises an adsorption temporary fixing sheet including a foam layer having an open-cell structure, wherein the adsorption temporary fixing material includes the foam layer in the entirety of the sheet or on at least one surface thereof, wherein a shear adhesive strength of a surface of the foam layer with a SUS304BA plate at 23 C. is 1 N/100 mm.sup.2 or more at a tensile rate of 50 mm/min, wherein a peel strength of the surface of the foam layer from the SUS304BA plate at 23 C. is 1 N/20 mm or less at a peel angle of 180 and a tensile rate of 300 mm/min, and wherein a weight change ratio after the adsorption temporary fixing sheet has been immersed in distilled water for 1 minute and then water droplets have been wiped off the surface thereof is 50% or less.

A polyisocyanurate foam insulation product is produced from an isocyanate component, a polyol-containing component, and a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and one or more surfactants, and the polyisocyanurate foam insulation product has an R-value per inch of at least 5.7 when measured at 40 F. In some formulations, the polylol-containing component may include a fire retardant, a metallo-organic compound, or combinations thereof. The cell size of the foam may be less than 120 microns. The polyol-containing component may include a mixture of polyols having different functionalities.

A gypsum-based acoustic panel wherein in the panel includes a core layer of foamed gypsum, face side and back side layers of non-woven encasing the core layer, and the panel has an alpha.sub.w-value of between 0.4 and 0.7 and specific flow resistances of <15000 Pa s/m, methods for their preparation and their uses.

The invention relates to the field of polymer materials and processing. Provided are a polymer sheet and a manufacturing method and a use thereof. The polymer sheet has a thickness less than its average hole diameter. The polymer sheet is in the form of a cellular board having through holes in the thickness direction, and has a through-hole ratio of 20%-60%, a thickness of 10-500 m, and an average hole diameter of 10-500 m. The manufacturing method comprises a roll material supplying step, a continuous cutting step and a rolling step. The continuous cutting step has a precision error of 0.02 mm. The above method can be used to manufacture a material having a low density, high impact resistance, a high compression rate, and low compression set and capable of serving as a sealing and buffering material for an electronic device.

Co-cured urethane and vinyl ester, epoxy, or unsaturated polyester gel coats having improved toughness and flexibility compared with conventional polyester gel coats are disclosed. The gel coats, which have 10-50 wt. % urethane content, adhere well to structural layers and can be used in a traditional in-mold process. Co-cured elastomeric coatings comprising from 50 to 95 wt. % of a urethane component and an unsaturated polyester, epoxy, or vinyl ester are also disclosed. Unlike conventional urethane coatings, the elastomeric coatings adhere well to structural layers and can be used in a traditional in-mold process. Castings or structural layers comprising a reinforced thermoset of co-cured urethane and vinyl ester, epoxy, or unsaturated polyester components, including 10-95 wt. % of the urethane component, are also described. The invention includes in-mold processes for making laminates that utilize the gel coats, elastomeric coatings, and/or structural layers. The in-mold process gives flexible, durable, urethane-containing laminates having good interlayer adhesion.

Vulcanized tube having at least one foamed layer of elastomer material with a cellular structure with an average cell size in a range between 5 and 200 microns and the number of cells per unit of volume in a range between 1.9?10.sup.5 and 1.4?10.sup.9 cells/cm.sup.3. To form the tube, a forming device is inserted into an unvulcanized tube obtained in a prior initial stage of extrusion. At least one foaming agent is added to the elastomer material of the foamed layer in the initial stage of extrusion, such that the tube is vulcanized and the foamed layer is also simultaneously foamed. The vulcanizing process is carried out under pressure. Finally, in a stage of removal, the already vulcanized and foamed tube is removed from the forming device.

A slurry for manufacturing gypsum board comprises calcined gypsum, water, a foaming agent, and a coalescing agent. The foaming agent imparts a plurality of bubbles in the slurry. Typically, a foam is pre-generated with the foaming agent and the foam is used to form the slurry such that the foam imparts the plurality of bubbles in the slurry. The coalescing agent coalesces the plurality of bubbles imparted by the foam. Typically, the coalescing agent coalesces a plurality of small and partially joined bubbles imparted by the foam to create larger and more discrete bubbles. A gypsum board and method of forming the slurry and the gypsum board are also disclosed. The gypsum board comprises a gypsum layer formed from the slurry. The gypsum layer defines a plurality of bubbles dispersed therein, which are imparted by the foam and coalescing agent of the slurry.

A material arrangement (10) for insulating a building structure (50) in an installed condition, the material arrangement (10) including first and second flexible polymer foam layers (12) and a flexible phase change material layer (16) between the first and second flexible polymer foam layers (12), and at least one flexible reflective layer (14) extending over at least one of the first and second flexible polymer foam layers (12). A method of forming and installing such a material arrangement (10) is also disclosed.

A composite floor mat having an upper layer, a middle layer, and a bottom layer. The upper layer comprises a durable wear surface, the middle layer comprises a plurality of pockets, each filled with an energy dissipative material. The bottom layer is bound to the upper layer and defines a perimeter of the mat and a network of ribs defining the pockets of the middle layer. A mat system comprises a plurality of mat components positioned adjacent one another, including edge mat components, corner mat components, and internal mat components, held together by retaining clips disposed in a channels of the mat components. A process for manufacture of a floor mat assembly, and product produced thereby, are also disclosed.