CMC For Ceramics

Carboxymethyl Cellulose (CMC) can significantly improve  ceramic body plasticity and strength, prevent  ceramic body cracking and  Improve glaze smoothness.

I. Applications in Ceramic Green Bodies

Low dosage with significant improvement in green body flexural strength

Increases green body processing speed and reduces production energy consumption

Excellent burn-off properties – leaves no residue after firing, does not affect body color

Facilitates process control – prevents glaze defects such as running glaze and glaze skipping

Exhibits deflocculating effect – improves glaze slurry fluidity for easier glazing operations

Acts as a body binder – increases plasticity of clay and sand materials for easier body forming

Strong resistance to mechanical wear – minimal molecular chain degradation during ball milling and mechanical mixing

Functions as a body reinforcement agent – increases green body flexural strength, improves body stability, and reduces breakage rates

Strong suspending and dispersing properties – prevents sedimentation of non-plastic materials and pigment particles, ensuring uniform slurry dispersion

Promotes even moisture evaporation in the body, preventing drying cracks – particularly effective for large-format floor tile bodies and polished tile bodies

II. Applications in Ceramic Glaze Slurries

In glaze slurries, CMC primarily acts as a binder and also functions as a suspending agent:

Effectively regulates glaze slurry rheology at low addition levels for easier glazing application

Improves glaze-to-body bonding performance – significantly enhances glaze surface strength and prevents glaze peeling

Delivers fine glaze surface finish with stable slurry properties – reduces pinhole defects after firing

Excellent dispersing and protective colloid properties – keeps glaze slurry in a stable dispersed state

Effectively increases glaze surface tension – prevents water migration from glaze to body, enhancing glaze smoothness

Prevents cracking and breakage during conveying after glazing – avoids issues caused by reduced green body strength