The application of CMC in Ceramic
Sodium carboxymethyl cellulose (CMC) is an anionic cellulose ether with a white or light yellow powder appearance. It is easily soluble in cold or hot water, forming a transparent solution with a certain viscosity. CMC has a wide range of applications in the ceramic industry, primarily in the following areas:
I. Applications in ceramic green bodies
In ceramic green bodies, CMC is primarily used as a shaping agent, plasticizer, and reinforcing agent. It enhances the bonding strength and plasticity of the green body material, making it easier to form. Additionally, CMC increases the flexural strength of green bodies, improves their stability, and reduces breakage rates. Furthermore, the addition of CMC facilitates uniform evaporation of moisture from the body, preventing drying cracks, making it particularly suitable for large-format floor tiles and polished tile bodies.
II. Applications in Ceramic Glaze Slurry
In glaze slurry, CMC serves as an excellent stabilizer and binder, enhancing the adhesion between the glaze slurry and the green body, keeping the glaze in a stable dispersed state. It also increases the surface tension of the glaze, preventing water from diffusing from the glaze into the green body, thereby improving the smoothness of the glaze surface. Additionally, CMC effectively regulates the rheological properties of glaze slurry, facilitating glaze application, and improves the bonding performance between the body and glaze, enhancing glaze surface strength and preventing glaze peeling.
III. Applications in Ceramic Printed Glaze
In printed glaze, CMC primarily leverages its thickening, binding, and dispersing properties. It improves the printability and post-processing effects of printed glazes, ensuring smooth printing, consistent color, and enhanced pattern clarity. Additionally, CMC maintains the stability of printed glazes and infiltrated glazes during storage.
In summary, CMC plays a crucial role in the ceramic industry, demonstrating its unique properties and advantages throughout the process from body to glaze slurry to printed glaze.
Post time: Sep-17-2025