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102.jpg (3709 bytes)  Alumina Rigidizer/Hardener Type AL-R/H

 

GENERAL INFORMATION
ZIRCAR Alumina Rigidizer/Hardener Type AL-R/H is a single part water based colloidal suspension of alumina hydrate. Mainly used for rigidizing and hardening the surfaces of ZIRCAR and other fibrous ceramic products, it also finds use as a coating agent and binder. 

AL-R/H is easily applied by brushing, rolling, dipping, sponging or spraying. It is non flammable and is not affected by freezing. Coverage depends upon the desired hardness. One gallon covers 100 ft sq. if sprayed in a thin coating of approximately 1/16" thick. Stiffening and hardening of flexible materials occurs upon drying. 

Firing to  600C (1110F) is sufficient to remove chemical water from the hydrated alumina to minimize outgassing during use. Due to their high surface area, the alumina particles will readily adsorb water from moist air. This tendency can be minimized by high firing and the resultant reduction in surface area.

CHARACTERISTICS & PROPERTIES

Color

Green

Alumina Purity, %

99+

Alumina Content of Liquid, wt %

28

Surface Area of Solids, m2/gm

~180

Weight per gallon, lbs.

9.8

Specific Gravity, gm/cm3 (pcf)

1.18 (73.7)

pH

4.2

Maximum Use Temperature, C (F)

1650 (3002)

Melting Point, C (F)

2050 (3722)

SUGGESTED APPLICATIONS

Coating surfaces of rigid ZIRCAR fibrous ceramic materials for improved hardness, abrasion & chemical attack resistance.

Forming of shapes (rigid tubes, boats, setters, supports, process fixtures etc.) by rigidization of flexible ZIRCAR fibrous ceramic materials.

Bonding agent in manufacture of high-alumina refractories, composites and laminates.

msds.jpg (1069 bytes)MATERIAL SAFETY DATA SHEETmsds.jpg (1069 bytes)

AVAILABILITY

STANDARD ALUMINA RIGIDIZER/HARDENER

ITEM #

DESCRIPTION

PRICE*

SHIP WT. (lb.)

 A17401  AL-R/H, 1 QT $76.70 5
 A17402  AL-R/H, 1 GAL $177.00 12
 A17403  AL-R/H, 5 GAL $520.00 56
 * Note: Prices shown apply to sales within the United States. Contact us for information regarding international commerce.

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 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 2001  ZIRCAR Ceramics, Inc.