Abstract: The present disclosure relates to a multilayer composite that may include a first porous layer, and a first barrier layer overlying the first porous layer. The first barrier layer may include a polyaramid material, a polyimide material, or any combination thereof. The multilayer composite may have a flame resistance rating of at least about 180° C. and a 50% strain compression rating of not greater than about 600 kPa.

Abstract: A mold for forming a porous article can include a first material having a first thermal conductivity and a second material having a second thermal conductivity different from the first thermal conductivity. The first material may be at least partially embedded within the second material and configured to create regions of different thermal conductivity in the body, such as configured to create distinct nucleation regions within a material formed within the mold. A method for forming a porous article can include providing a slurry within a mold and freeze-casting the slurry to form a porous article having a burst-like distribution of porosity. A porous article according to embodiments herein can include a burst-like distribution of porosity.

Abstract: A mold for forming a porous article can include a first material having a first thermal conductivity and a second material having a second thermal conductivity different from the first thermal conductivity. The first material may be at least partially embedded within the second material and configured to create regions of different thermal conductivity in the body, such as configured to create distinct nucleation regions within a material formed within the mold. A method for forming a porous article can include providing a slurry within a mold and freeze-casting the slurry to form a ceramic article having a burst-like distribution of porosity. A porous article according to embodiments herein can include a burst-like distribution of porosity.

Abstract: A mold for forming a ceramic article can include a first material having a first thermal conductivity and a second material having a second thermal conductivity different from the first thermal conductivity. The first material may be at least partially embedded within the second material and configured to create regions of different thermal conductivity in the body, such as configured to create distinct nucleation regions within a material formed within the mold. A method for forming a ceramic article can include providing a slurry within a mold and freeze-casting the slurry to form a ceramic article having a burst-like distribution of porosity. A ceramic article according to embodiments herein can include a burst-like distribution of porosity.

Abstract: A pigment paste composition includes a) a flame retardant including a combination of antimony oxide, zinc borate, and zinc sulfide; b) a coloring agent; c) a solvent comprising a plasticizer; and d) a wetting and dispersing agent. Further included is a fabric including at least one fiber coated with the aforementioned pigment paste composition dispersed within a polymer base.

Abstract: New coaxial ceramic heating elements and methods for manufacture wherein a conductive core region extends into a resistive hot zone at the distal end of the heating element, thereby moving the interface between the core conductive region and the resistive hot zone away from the distal tip of the heating element. Methods comprise bringing together a pre-formed or hardened zone of material with a zone of one or more materials having flow, curing, gelling, drying or otherwise solidifying or hardening the material having flow, and sintering to thereby forming an integral coaxial heating element.