Alumina Cement Type AL-CEM           한글 문서

GENERAL INFORMATION ZIRCAR Alumina Cement Type AL-CEM is a single part water based adhesive containing milled alumina fibers combined with fillers plus organic and inorganic binders. Principally used for bonding ZIRCAR® fibrous ceramic products to themselves, it also finds application as a coating cement to improve the hardness and oxidation resistance of substrates. AL-CEM is mildly acidic (pH 5) and forms a strong bond upon drying. Curing at 425°C (800 °F) or more will render the bond stable to re-exposure to water or humid conditions.  Application Instructions: 1) Clean surfaces to be joined or coated, making certain they are free of oil, starch, etc.. 2) Mix contents thoroughly before using. 3) Apply cement thoroughly and evenly to all cleaned surfaces to be joined or coated . Reapply cement as required until surfaces remain wet and fluid. Initially, some wicking into porous materials will occur. 4) When bonding parts, contact wet surfaces using slight pressure to assure match of parts. 5) Dry the joined or coated pieces thoroughly before moving or placing into services. The time required to dry varies from a few minutes to a day or more, depending on the size and ability to dry out the part. Drying may be accelerated  by heating or oven drying at not greater than 90°C (200°F).

CHARACTERISTICS & PROPERTIES  Color White Solid Content, % 70 Typical Solids Composition, %      Al2O3 99.2      SiO2 0.8 Specific Gravity, gm/cc 1.95 Weight Per Pint, lbs 2 Maximum Use Temp.*, °C (°F) 1650 (3002) Melting Point, °C (°F) >1870 (3398) Coverage, area of .010" layer on fibrous ceramic insulation, sq. ft 7

Standard items are available for immediate shipment from stock.

Custom preparations, such as "low silica" and "high purity" variations are available on request.