Ceramic Grade Carboxymethyl cellulose Ceramic Grade Carboxymethyl cellulose is a light cream to white free flowing powder or granulate, that readily dissolves in water to form clear, viscous solutions. Our Ceramic Grade CMC is 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 0.1-0.5% against weight depending on the final desired characteristics of the glaze. Besides glazing,our CMC can be used in whole process during ceramic production:
Recommend dosage is against weight and adjustable depending on the final desired characteristics. Brief Properties of our CMC for CeramicHigh Degree of substitutionHigh 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.
|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||0.50%|| |
|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 fire stage||5%-20% || |Brookfield LVF,25ºC.Spindle & RPM maybe different in separate conditions.Physical Properties of our Carboxymethyl celluloseAppearance White or light creamy white powder Moisture Max.10% Bulk density 550-1000kg/m3PH(1%) 6.5-8.5Rules & regulations:CAS: 9004-32-4Packaging: packed in 25kg 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 requestedMore product and detailed specs available upon request. We dedicated to develop product to meet customer demand properly