NINGBO INNO PHARMCHEM CO.,LTD. is pleased to offer a comprehensive range of Sodium Carboxymethyl Cellulose (CMC) products tailored for the diverse needs of the ceramic industry. Understanding the different grades of CMC available, particularly concerning viscosity and purity, is crucial for optimizing performance in specific ceramic applications. This guide aims to assist manufacturers in selecting the most suitable CMC for their processes, whether it involves glazes, bodies, or slips.

The primary distinguishing factor among CMC grades is viscosity. Viscosity, typically measured in centipoise (cps) for a specific concentration in water (e.g., 1% or 2% solution), dictates how effectively CMC will thicken a ceramic slurry or binder system. High-viscosity CMC grades are generally preferred for applications requiring substantial thickening, such as in casting slips or heavy-duty binders. These grades help impart excellent plasticity and suspension properties, crucial for preventing particle settling and ensuring uniform consistency. For manufacturers looking to purchase high viscosity CMC, grades offering viscosities from 3000 cps upwards are typically considered.

Conversely, lower-viscosity CMC grades might be more suitable for applications where a lighter body or glaze formulation is desired, or where CMC primarily acts as a dispersant or lubricant. The choice of viscosity also depends on the desired concentration of CMC in the final formulation and the interaction with other components in the ceramic mixture. Experimentation and consultation with a knowledgeable CMC manufacturer are often recommended to determine the optimal viscosity for a specific ceramic product.

Purity is another critical parameter. While technical grades of CMC are widely used in industrial applications, higher purity grades may be beneficial in certain ceramic processes where minimizing inorganic impurities is important. For instance, in advanced ceramics or applications sensitive to color or trace elements, a higher purity CMC can prevent unwanted side reactions or visual defects after firing. Understanding the required purity level for your specific ceramic application will guide the selection process.

Consider the application itself: for tile binders, a balance of viscosity and binding strength is needed to ensure good green strength without excessive slurry viscosity. For glazes, controlling rheology for smooth application and uniform firing is paramount, often favoring grades that provide good suspension and water retention. For slip casting, high viscosity and deflocculation properties are key to achieving dense, defect-free pieces.

NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing ceramic manufacturers with the insights and products needed to succeed. By carefully selecting the appropriate CMC grade based on viscosity, purity, and specific application requirements, you can significantly enhance your ceramic production processes. As a trusted CMC supplier, we offer expert advice to help you leverage the full potential of our products for your unique ceramic needs.