Abstract: Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.

Abstract: Edge stiffened corrugated polymeric sheet material can be utilized as storm panels for mounting about a perimeter surface of an opening so as to protect the opening from wind and impact loads. The panels can include a corrugated sheet material having a corrugated contiguous band horizontally extending at about an end of the top and the bottom, wherein the corrugated contiguous band is complementary and contiguous to the plurality of corrugations of the corrugated sheet panel. The complementary and contiguous corrugated band can be configured to sandwich the sheet material. The panel may also include, individually or in combination, a contiguous band sandwiching the polymeric sheet material at a terminal end of each side and extending vertically from the top to the bottom. The panels provide wind and impact load protection for the opening.

Abstract: Edge stiffened corrugated polymeric sheet material can be utilized as storm panels for mounting about a perimeter surface of an opening so as to protect the opening from wind and impact loads. The panels can include a corrugated sheet material having a corrugated contiguous band horizontally extending at about an end of the top and the bottom, wherein the corrugated contiguous band is complementary and contiguous to the plurality of corrugations of the corrugated sheet panel. The complementary and contiguous corrugated band can be configured to sandwich the sheet material. The panel may also include, individually or in combination, a contiguous band sandwiching the polymeric sheet material at a terminal end of each side and extending vertically from the top to the bottom. The panels provide wind and impact load protection for the opening.

Abstract: Polymeric foams having nanocellular morphology are formed from a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compound. The foams include a plurality of cells having an average diameter of less than 1 micron. Processes for forming the foams include melting a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compounds; diffusing a blowing agent into the polymeric material to form a mixture; nucleating bubbles in the mixture is at a sufficient temperature and pressure to enable the production of cells having an average diameter of less than 1 micron; stabilizing the cells; and forming the mixture into a desired shape.

Abstract: A nano-cellular polymer foam is disclosed, which has an average pore size from about 10 nanometers to about 500 nanometers; and a foam density that is from about 1 percent to about 50 percent of the bulk density of the material of the nano-cellular foam.

Abstract: A composite material for use in turbine support structures. The composite material may include a first material having a positive coefficient of thermal expansion and a second material having a negative coefficient of thermal expansion, a negative Poisson ratio, or both a negative coefficient of thermal expansion and a negative Poisson ratio.

Abstract: A method of fabricating an exhaust hood is provided for use with a turbine engine. The method includes providing an upper shell casing wherein the upper shell casing is fabricated from a composite material, and coupling the upper shell casing to a lower shell casing such that a turbine is housed within the exhaust hood, the shell casing is fabricated from a composite material. A turbine assembly is also provided.

Abstract: In one embodiment, a multiwall sheet comprises a first sheet comprising an inner surface and an outer surface, a second sheet comprising a first surface and a second surface; and a rib disposed between the inner surface and the first surface. The outer layer can have surface features and has a surface area of greater than or equal to 140% of a planar, flat, non-profiled surface area for a same unit area.

Abstract: Disclosed is a sheet that comprises protrusions comprising a first portion extending from a base by a second portion where a second portion diameter is less than a first portion diameter. Also disclosed is a sheet that comprises a first portion and a second portion extending from a symmetry plane, where the protrusions repeat across a length of the sheet along the symmetry plane where the first portion has a first portion diameter and the second portion has a second portion diameter and where the second portion diameter is less than the first portion diameter. A sheet comprising a plurality of cavities across a width of the sheet where each cavity extends the length of the sheet and the cavity has an opening diameter that is smaller than a body diameter is also disclosed.

Abstract: Disclosed herein is a multiwall sheet that comprises a first wall, a second wall, an intermediate wall disposed between the first wall and the second wall, a first set of ribs disposed between the first wall and the intermediate wall, and a second set of ribs disposed between the second wall and the intermediate wall. No ribs are in direct vertical alignment so as to align from the first wall to the second wall and no ribs are on a side of the first wall opposite the intermediate wall or on a side of the second wall opposite the intermediate wall. Also disclosed is a method for making a multiwall sheet.

Abstract: In one embodiment, the method for making a polymer article comprises: orienting polymer chains in one direction more than any other direction to form an oriented article, contacting the oriented article with a foaming agent, and foaming the material to form the reflective polymer article comprising planar cell structures having a length “l” and a thickness “t”.

Abstract: A foamable polymeric composition can comprise a polymer, a blowing agent cage material, and a blowing agent. The blowing agent cage material is selected from the group consisting of zeolite imidazolate framework, metal organic framework, carbon cage structure, and combinations comprising at least one of the foregoing. In one embodiment, the composition can be formed by mixing the polymer with the blowing agent cage material to form a mixture, introducing a blowing agent to the mixture, and forming the mixture into pellets.

Abstract: A method of making a reflective polymer article comprising: (a) contacting a polymer material with a foaming agent; (b) foaming in the material under conditions sufficient to form reflective polymer article having gas cells and polymer gas interfaces between the cells; wherein the reflective polymer article has a metallic or reflective property.

Abstract: A nano-cellular polymer foam is disclosed, which has an average pore size from about 10 nanometers to about 500 nanometers; and a foam density that is from about 1 percent to about 50 percent of the bulk density of the material of the nano-cellular foam.

Abstract: Polymeric foams having nanocellular morphology are formed from a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compound. The foams include a plurality of cells having an average diameter of less than 1 micron. Processes for forming the foams include melting a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compounds; diffusing a blowing agent into the polymeric material to form a mixture; nucleating bubbles in the mixture is at a sufficient temperature and pressure to enable the production of cells having an average diameter of less than 1 micron; stabilizing the cells; and forming the mixture into a desired shape.

Abstract: Edge stiffened corrugated polymeric sheet material can be utilized as storm panels for mounting about a perimeter surface of an opening so as to protect the opening from wind and impact loads. The panels can include a corrugated sheet material having a corrugated contiguous band horizontally extending at about an end of the top and the bottom, wherein the corrugated contiguous band is complementary and contiguous to the plurality of corrugations of the corrugated sheet panel. The complementary and contiguous corrugated band can be configured to sandwich the sheet material. The panel may also include, individually or in combination, a contiguous band sandwiching the polymeric sheet material at a terminal end of each side and extending vertically from the top to the bottom. The panels provide wind and impact load protection for the opening.

Abstract: A method of fabricating an exhaust hood is provided for use with a turbine engine. The method includes providing an upper shell casing wherein the upper shell casing is fabricated from a composite material, and coupling the upper shell casing to a lower shell casing such that a turbine is housed within the exhaust hood, the shell casing is fabricated from a composite material. A turbine assembly is also provided.

Abstract: A composite material for use in turbine support structures. The composite material may include a first material having a positive coefficient of thermal expansion and a second material having a negative coefficient of thermal expansion, a negative Poisson ratio, or both a negative coefficient of thermal expansion and a negative Poisson ratio.

Abstract: In one embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a non-uniform cell density. In another embodiment, a multiwall sheet can comprise: non-intersecting polymer walls comprising outer layers and a transverse layer and/or a divider. The transverse layer and/or the divider extends from one of the polymer walls to another of the polymer walls to form cells. The multiwall sheet has a non-uniform cell density. In yet another embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a different number of inner layers, transverse layers, and/or dividers, in different portions of the sheet. The multiwall sheets can be used, for example, in a naturally light structure.

Abstract: Disclosed herein are multiwall panels comprising micro-scale surface features and methods of making the same. In one embodiment, a multiwall panel is disclosed. The multiwall panel comprises, a top sheet, a bottom sheet, a rib disposed between and connected to the top sheet and the bottom sheet, and a micro-scale surface feature disposed on a surface of the multiwall panel, wherein the micro-scale surface feature comprises a width measured at a base of the surface feature, wherein the width is about 30 micrometers to about 3 millimeters. In another embodiment, a process of forming multiwall panels is disclosed. In yet another embodiment, a naturally lit structure is disclosed.