Abstract: Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally insulating particles distributed within the polymeric network structure, wherein the thermally insulating particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally insulating particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density not greater than 3 g/cm3; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

Abstract: An interlocking wooden mat assembly for roadways in undeveloped areas comprises a three layered lamination of substantially parallel and closely spaced wooden planks forming each layer, which assemblies are rectangular and interlock along one of the longer sides. Selected planks of the bottom layer are offset longitudinally and extend beyond the intermediate layer at one end to provide a male extension on one end and a female recess at the other end. The planks of the bottom layer lie parallel to each other along the shorter dimension of the rectangular mat. The planks of the intermediate lie parallel to each other along the longer dimension of the rectangular mat and terminate at the edges of the rectangle. The top layer has planks extending parallel to each other and to the bottom planks along the shorter dimension of the rectangle comprising two groups of planks spaced toward the edges of the rectangle with the intermediate portion of the intermediate layer of planks being uncovered.

Abstract: An interlocking wooden mat assembly for supporting heavy equipment and vehicles around oil field drilling sites and the like comprises a three layered lamination of substantially parallel and closely spaced wooden planks forming each layer. Selected planks of the top layer are offset longitudinally and extend beyond the intermediate layer at one end to provide a male extension on one end and a female recess at the other end. Selected planks of the intermediate layer are offset laterally to extend beyond the surface and underlying layers at one side to provide a male extension on that side and a female recess at the other side. The surface layer has one less plank than the underlying layer to provide an exposed area on the side of the intermediate layer and to expose recessed areas on one side plank of the underlying layer. The mats may be removably secured together in end-to-end and edge-to-edge relation by the male extensions fitting the female recesses and being nailed together at the point of overlap.