ZIRCAR Ceramics’ Alumina Cements Type AL-CEM are single-part water-based adhesives designed for bonding ZIRCAR Ceramics’ fibrous ceramic products to themselves or to other porous refractory materials, such as insulating firebricks and lightweight castables. These products are also useful as coating cements to improve the hardness, oxidation and corrosion resistance of substrates.
TYPE AL-CEM is the highest purity Al₂O₃ cement and exhibits the greatest chemical inertness of this family of cements.
TYPE AL-CEM/XT is based upon AL-CEM and contains a modifier that provides extended working time and extra hardness.
TYPE AL-CEM/XTW is a more aqueous and finer version of AL-CEM/XT, making it more suitable for spray application.
TYPE AL-CEM Super contains additional polycrystalline alumina filler materials.
When stirred, these dilatant suspensions flow. After stirring, AL-CEM and AL-CEM/XT have the consistency of a high -quality latex paint. AL-CEM/XTW has the consistency of heavy cream and AL-CEM Super is more putty-like.
These products form strong bonds upon drying. Curing at 425°C (800°F) or more will render the bond stable to re-exposure to water or humid conditions. ZIRCAR Ceramics’ Alumina Cements are non-flammable, not affected by freezing and are mildly acidic (pH 5). Shelf life is 1 year.