Description: Alumina Substrates/Sheets/Plates are made by tape casting and dry pressing. General purity degrees of Al2O3 Substrates/Sheets/Plates are 96%, 99% and 99.5%. Purity 96% Alumina Ceramic is the most choice. Ceramic Substrates made of Al2O3 Alumina is much cheaper than Al A ceramic microporous polyolefin battery separator membrane, high in air permeability, low in shrinkage and improved temperature resistance addresses the safety requirements of lithium ion batteries. The separators made by the current invention consists of one or more polyolefin polymers and kaolin fillers comprised of aluminum oxide and ... Epoxy resins were used as matrix material. Para-aramid, carbon, glass fibers, and steel wire sheets were used as reinforcing material. Your One-Stop-Source for "High-Temperature" Insulation Textiles & Accessories for Removable Insulation Jacketing, Fireblanket Applications, Ceramic Fiber, Gasketing and Compressed Packing Products for Industrial Applications. Click on the categories below to find out more about our products.