CMC for tile production
- Commodity name: CMC for tile production
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Sodium carboxymethyl cellulose (CMC) in ceramic tile production primarily improves product quality by enhancing slurry properties, strengthening the body, and optimizing glaze adhesion. Its specific functions are as follows:
Improving Slurry Rheology:CMC dissolves in water to form a stable colloidal solution, regulating the viscosity and flowability of the slurry, preventing particle sedimentation, and improving molding efficiency. Its polymer structure helps the slurry disperse evenly, reducing defects during the molding process.
Enhancing Body Strength and Plasticity: CMC enhances the adhesion between powder particles through its network structure between molecular chains, improving the mechanical strength of the green body and reducing cracking and breakage during drying and sintering. Simultaneously, its water-retention properties extend working time, adapting to different molding processes such as slurry casting and pressure filtration.
Optimizing Glaze Properties:In glazes, CMC acts as a thickener and suspending stabilizer, increasing glaze slurry viscosity, preventing sagging and accumulation, and ensuring uniform glaze adhesion. Its electrostatic repulsion improves glaze dispersibility, reduces pinholes and bubbles, and enhances glaze smoothness and wear resistance.
Reducing Production Defects :CMC's water-retention properties control the uniform evaporation of moisture in the body, preventing dry cracking caused by excessively rapid drying. During high-temperature firing, its film-forming protective glaze components are released stably, reducing glaze surface defects.
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