Alumina Cement Type AL-CEMYou are here: Home > Products > Cements & Rigidizers > AL-CEM
Alumina Cement Type AL-CEM
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 ZIRCARŽ fibrous ceramic products to themselves
or to back-up thermal insulations, such as porous
firebricks, and fibrous ceramic boards, it also finds application as a coating
cement to improve the hardness and oxidation resistance of substrates.
This high purity cement has the consistency of a thick paint and may be applied using a variety of techniques including dipping, with a brush, paint roller or sprayer. Water may be used to return to its original consistency, if it becomes thickened by evaporation. Alumina Cement is non-flammable, is not affected by freezing and is mildly acidic (pH 5).
AL-CEM 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.
CHARACTERISTICS & PROPERTIES
Color |
White |
Solid Content, % |
70 |
|
Typical Solids Composition (Calcined Basis), wt.% |
|
| Al2O3 | 98.7 |
| SiO2 | 0.55 |
| Na2O | 0.52 |
| TiO2 | 0.064 |
| ZrO2 | 0.051 |
| CaO | 0.030 |
| K2O | 0.025 |
| MgO | 0.010 |
| CuO | 0.001 |
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 by 1 Pint as .010" Layer on Fibrous Ceramic Insulation, sq. ft | 7 |
SUGGESTED APPLICATIONS
Bonding ZIRCAR fibrous ceramic materials together and to other porous surfaces.
Coating surfaces of ZIRCAR boards, blankets and papers for improved hardness, abrasion & chemical attack resistance.
Repairing cracks and openings in furnace walls composed of fibrous ceramic material.
Forming of shapes (rigid tubes, boats, setters, supports, process fixtures etc.) by bonding of rigid and flexible ZIRCAR fibrous ceramic materials.
Bonding agent in manufacture of high-alumina composites and laminates.
|
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). |
AVAILABILITY
STANDARD
CEMENT ITEM # DESCRIPTION SHIP WT. (lb.) C4001 AL-CEM, 1 PT
$108.00 C4002 AL-CEM, 1 QT $192.00 To place your order, please click the respective "ORDER" button
next to the item you wish to purchase. To view your shopping cart click the button to the
right. For more info -click here- Standard items are available for immediate
shipment from stock. Custom preparations, such as "low
silica" and "high purity" variations are available on request. Please contact
us with your special requirements. We are pleased to contact
you if you would like more information or want to discuss custom product availability
and pricing. To Order Standard items: order online or specify
quantity, item # and description. Custom preparations: specify quantity,
product type and description (by supplying written descriptions or material
specifications). Copyright Š
2004 ZIRCAR Ceramics, Inc.
PRICE*
4
6
* Note: Prices
shown apply to sales within the United States. Contact us for information regarding international
commerce.
