Description
Carboxymethyl cellulose in Ceramic
Industry
Carboxymethyl cellulose is a
light cream to white free flowing powder or granulate, that readily
dissolves in water to form clear, viscous solutions.
Our designated CMC are
particularly suited for use as binders and provide high strength to
the unfired substrate at relatively low addition levels while
producing excellent plasticity,good suspensions,uniform slurries
and low residue upon firing.
Our CMC is used as the most
efficient binders,thickeners and stabilizers in ceramic glazing to
provide:
* Assisting in the formulation
of stable glaze suspensions
* Tailoring the flow and
application to the situation
* Directly controlling the
drying rate of the glaze as it is applied
* Increasing the mechanical
strength of unfired glaze surfaces
* Promoting uniform pigment
dispersions for uniform color
We recommend low to medium
viscosity CMC with typical addition level 0.**0.5% against weight
depending on the final desired characteristics of the
glaze.
Besides glazing,our CMC can be
used in whole process during ceramic production:
|
Ceramic production process
|
Benefits from CMC as additive
|
Recommend dosage
|
|
Dry
pressing
|
Sticky
ceramic dry mix powder,Stabilize the ceramic slip,lower green body
shrinkage and higher accuracy for specification
tolerance
|
0.5%*1.0%
|
|
Slip
casting
|
Stabilizing the ceramic slip
|
0.*0%
|
|
Tape
casting
|
Adjust
viscosity and provide strength to the very thin and sensitive tape
casting
|
6%*7%
|
|
Extrusion
|
Provides plasticity to the substrate in addition
to wet/green strength
|
2%*3%
|
|
Injection molding
|
Provides rheology control during the molding
step,Thermoplastic and less residue during the fire
stage
|
5%**0%
|
Recommend dosage is against weight and adjustable depending on the final desired
characteristics.
Brief Properties of our CMC for
Ceramic
High Degree of
substitution
High degree of substitution
smooth the rheology of the aqueous solution and give improved
compatibility.
Typical viscosity range
Typical viscosity of some grades
are shown below.Additional types are available or can be
tailor-made to meet customer product request.
|
|
|
Concentration,%
|
mPa.s
|
|
2
|
****0
|
|
2
|
******0
|
|
2
|
*******0
|
Brookfield LVF,*5℃.Spindle
& RPM maybe different in separate conditions.
Physical Properties of our Carboxymethyl
cellulose
Appearance
White or light creamy white powder
Moisture
Max.*0%
Bulk
density
*******0kg/m3
PH(1%)
6.**8.5
Rules & regulations:
CAS: ********4
Packaging:packed in *5kg net multiply paper
bags,shrinkwrapped on pallets or as per customer requested
design.
Storage: keep original packaging sealed,stored in
water-proof,clean and dry conditions.
Shelf life: 2years after production stored as above
requested
More product and detailed specs available upon
request. We dedicated to develop product to meet customer demand
properly
