Cerapol (Dispersant & Deflocculant for Ceramic)

Cerapol is a low and medium molecular weight polymer that acts on the molecular structure of clay, causing clay to flow as a liquid without the addition of excessive amount of water. Primarily used in the production of ceramics body slip to creates and maintain fluidity without the increased shrinkage and weakness that excess water will cause in the resulting green ware.

Cerapol is a DEFLOCULANT - used to reduce viscosity and prevent flocculation, keep the body is dispersing form. CERAPOL neutralize positive charge on the clay edges.

CERAPOL thus allow to yield casting slips (slurries) or high solids content (up to ca. 70%) with a low viscosity. Good flow ability and easy process ability. The slurries are stabilized over an extended period of time and synersis can be effectively avoided. Due to reduction of water content less shrinkage in the mold, shorter drying times, and higher green body strength can be achieved.

How Cerapol Works:

A condition in which clays, polymers or other small charged particles become attached and form a fragile structure, a floc in dispersed clay slurries. Flocculation occurs after mechanical agitation ceases and the dispersed clay platelets spontaneously form flocs because of attraction between CERAPOL neutralize positive charge and keep whole body in negative charge thus same sign repel and clay slurry easily pump able for spray drying.

Advantages:

CERAPOL is used to overcome troublesome rheological problems from crowding factors influenced by particles size, shape & interparticle friction and formation of agglomerates.

Its use increases M.O.R. especially in ceramic formulations and eliminates formation of Pin Holes in the furnished articles.

CERAPOL produced slip have higher green strength, no glaze jumping or crowding effect due to its better absorption and penetration into the material.

CERAPOL leaves (No) silica in the pore structure and produces no efflorescence on moulds (spotting).

STPP (polyphosphates) suffer reversion or degradation to Orthophosphates through hydrolysis during grindings in ball mill. Orthophosphates are not the active dispersant. Orthophosphate anions may actually favour flocculation or deposition.

CERAPOL dispersants are minimizing the required energy input and grinding time during the grinding process.

Role of CERAPOL as dispersing agent in aqueous ceramic slurries are superior to maintain a low viscosity of the slurries at the higher dry content for a longer period compare to present traditional inorganic fluidifying agents such as sodium triply phosphate and carbonates. Present traditional inorganic deflocculant require using higher doses than CERAPOL organic polymer. Deflocculating or dispersion is the phenomenon that makes the agglomeration of particles difficult. CERAPOL polymers on being absorbed onto a particle, impart a high negative charge to that particles. When to such particles come near each other, they repel each other.

Doses of Cerapol:-

Typical use level of CERAPOL are 0.2-0.5(as is) based on the amount of dry material. The best suited deflocculant and the minimum viscosity doses depend on the nature and particle size of the clay particles and have to be determined experimentally.

Physical Properties of Cerapol:-

·         Appearance                 : Clear colorless to straw colour liquid.

·         Solid content %           : 40 to 60

·         pH                                : 8 to 8.5

·         Molecular Wt.             : 4500

Important Notice:-

The information and statements herein are believed to be reliable but are not to be construed as a warranty or representation for which we assume legal or representation for which we assume legal responsibility or as an assumption of a duty on our part.

Product Range for Ceramic Industry in upgrade technology:-