A gypsum-based composite structure is prepared from a slurry comprising a mixture of calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry. The calcium sulfate hemihydrate is hydrated by the water forming a wallboard core reinforced by the cellulose ether additive. The concentration, viscosity grade and degree of substitution of the cellulose ether are selected to give the composite improved nail pull resistance and greater flexural strength.

Gypsum-based composite materials reinforced by cellulose ethers

The present invention discloses a composition of matter for use in wallboard in the construction that has a morphology of pores and a network of interconnected inorganic particles that are coated with a thin layer of organic binder The process used to produce the wallboard can use either hydrophobic or hydrophilic prepolymers or preferably both to create the desired network of coated inorganic particles A preferred embodiment uses at least one hydrophobic constituent and a decomposition reaction that produces a gas to form one or more layers or a gradient of the morphology in one or more layers to create wallboard products with superior properties to those wallboard products now known

Construction board materials with engineered microstructures

A composite pallet member that provides enhanced performance characteristics. A composite pallet member comprising at least one deck member having a first surface and a second surface. The deck member having a plurality of open spaces and a strengthening layer positioned against at least one of the first surface and the second surface.

Composite pallet member

The present invention provides an air-permeable filtration media that includes an air-permeable backing and an adsorbent. The adsorbent is at least partially embedded in the air-permeable backing. The present invention also provides a method of manufacturing an air-permeable filtration media. The present invention also provides a method of substantially removing contaminants form air, employing the air-permeable filtration media.

Air-permeable filtration media, methods of manufacture and methods of use

A method and composition for organic-inorganic composite cementitious construction materials is described The microstructure of the composite includes porosity In one embodiment, a crosslinking component is mixed with a high molecular weight strengthening component and an inorganic cementitious material The addition of the mixture to water causes a crosslinked molecular network to form within the hydrated, composite cementitious construction material Porosity forms during drying and setting or as a result of the introduction of a stabilized foam or foaming agent Both enhanced flexural strength and improved nail-pull resistance are shown, allowing a reduction in weight of the composite cementitious construction material compared to cementitious construction materials made according to other known methods

Method and composition for polymer-reinforced composite cementitious construction material

The insulation barrier is formed of a body of expanded polystyrene which is impregnated with sodium silicate. In addition, a coating formed of a metallic-based inorganic material is applied over at least one surface of the body. The sodium silicate is applied in solution form and maintained within the body by a wetting agent in the solution. The coating is be applied by a coating roller either before or after drying of the impregnated polystyrene body.

Burton P. Gendron

Papers

Insulation barrier and a method of making and insulation barrier for a roof insulation system