ZIRCOCEM is a Zircon based inorganic low-expansion cold setting ceramic cement.

ZIRCOCEM is an ideal adhesive cement for halogen lamp cap fixing, embedding electrical heating elements, insulating and fixing of thermocouples, lining and maintenance of refractories, coating resistors and coils, sealing and assembling parts, which require high resistance to electricity, chemicals and thermal shocks, ZIRCOCEM adheres glass to glass, glass to ceramics, ceramic to ceramics, glass to metals, ceramic to metals etc.

Application

ZIRCOCEM is a two part chemical setting cement consisting part I micro fine dry powder and part II liquid which are mixed together to make a cementing paste. The powder should be thoroughly mixed before using. Part I powder 80% by wt and part II liquid 20% by wt (i.e. to prepare 100 gms ZIRCOCEM cement paste, take 80 gms of part I powder, add 20 gms of part II liquid) Shake thoroughly part II liquid before weighing. Place weighed liquid in a clean mixing container and add powder gradually, mix them thoroughly till smooth uniform (tooth) paste consistancy is obtained. Mixing can be carried out in a mixer at slow speed or by hand with a spatula. ZIRCOCEM can be mixed to thinner consistency by regulating marginal amount of part 11 liquid.

Setting / Curing

ZIRCOCEM cement paste starts internal chemical setting action in 18-24 hrs at ambient temperature. Cement paste working time is approximate 30 minutes at ambient temp. if it is desired to accelerate the cure apply oven drying at (90°C) 194°F Avoid steaming while drying.

Before cementing , porous substrates may require dampening. Apply only part II liquid coat on a substrate surface before applying the cement paste.

If high humidity resistance is required and if it is impractical to heat the cement, to make surface moisture resistant, suggest apply suitable lacquer or silicone coating on the cured ZIRCOCEM exposed cemented surface.

Cleaning

Equipment and contact parts used for processing ZIRCOCEM cement paste should be thoroughly cleaned with soap and water before ZIRCOCEM cement cures.

Caution

Use of excess quantity of liquid part II will reduce the mechanical strength and effect delay in setting time. Failure of cement to adhere indicates that cement adhesive strength is diminished and it should be discarded. Do not attempt to retemper the cement by adding more amount of liquid.

Packaging

ZIRCOCEM adhesive (part I) cement powder is supplied in strong air tight plastic containers, quantity 1 Kg, 5 Kgs and 25 Kgs. ZIRCOCEM (part II) liquid supplied in proportionate qty in strong airtight plastic bottles.

Shelf Life

ZIRCOCEM powder part I and liquid part II have a shelf life of one year, in a closed air tight container, in a dry location at room temperature.

Characteristics
•	Resists water, Oil, Electricity, Most solvents and all acids except H.F.
•	Resists maximum temperature to 1250°C as well as cryogenic conditions
•	Excellent mechanical strength
•	Heat conductive and thermal shock resistant
•	Ceramic like body
•	Odourless
•	Chemical cold setting at ambient temperature

Typical Properties
•	Colour	: Off white
•	Density	: 2.26 gms/cm3
•	Water Absorption	: Approx 10-12 %
•	Compressive Strength	: 274 kgs/cm2
•	Linear Shrinkage	: 0.50% to 0.70%
•	Tensile Strength	: 29 kgs/cm2
•	Maximum Service Temperature	: 2282°F / 1250°C
•	Dielectric constant	: 5.0 - 7.0
•	Dielectric strength
	At 70°F (21°C)	: 980 to 2000 Volts/mm
	At 750°F (399°C)	: 490 to 980 Volts/mm
	At 1475°F (801°C)	: 51 Volts/mm
•	Co-efficient of thermal expansion (25°C - 1000°C)	: 9.10 x 10-6 cm/cm/°C
•	Volume Resistivity
	At 70°F (21°C)	: 107 - 109 ohm-cm
	At 750°F (399°C)	: 104 - 106 ohms - cm
	At 1475°F (810°C)	: 102 - 103 ohms - cm

NOTE : The information gathered in this brochure is based on the results obtained from our R & D laboratory and is believed to be reliable. Since the conditions of application and use of ZIRCOCEM is beyond our control, we cannot stand any warranty or accept representation regarding the results obtained by the use of the product, or that such use will not infringe on any patents. The information is provided in good faith that the user will evaluate the material through testing and determine the suitability of the product. Jyoti ceases the liability for any damage, injury etc., caused by the mishandling of the product. Jyoti disclaims any warranty of merchantability or fitness for particular application.