CMC for ceramics

The role of CMC in ceramic bodies:

-High plasticity: Adding a small amount of CMC to ceramic bodies can significantly improve the plasticity of the clay, facilitating body shaping.
-Good flexural strength: It can also improve the flexural strength of green bodies and reduce breakage.
-Good ignition loss: No residue after firing.
-Good suspension: CMC has strong suspension properties, which can prevent the agglomeration of lean raw material particles.
-Good abrasion resistance: CMC has strong resistance to mechanical abrasion and causes minimal damage to molecular chains during mechanical stirring.

Ceramic Grade CMC Main Application Areas

1. Daily-use Ceramics
In slip casting or roll forming, CMC can control the viscosity of the slurry, resulting in a dense, uniform, and easily demolded green body, improving the fineness and smoothness of the finished product.
2. Building Ceramics
In the production of wall tiles, floor tiles, and polished tiles, CMC effectively improves the strength of the dry body, reduces the breakage rate, and maintains a uniform glaze distribution.
3. Industrial Structural Ceramics
In high-performance ceramics such as alumina, silicon carbide, and zirconium oxide, CMC participates in the molding process as a temporary binder, maintaining shape stability before high-temperature sintering and preventing deformation or cracking.
4. Electronic and Functional Ceramics
In the field of precision ceramics such as capacitor substrates, ceramic filters, and thermistors, CMC is used to improve slurry dispersibility and film uniformity, ensuring product dimensional accuracy and electrical performance stability.

CMC for Ceramic Industry Development Trends

As the ceramic manufacturing industry moves towards high-performance, low-energy consumption, and green manufacturing, the application of CMC for Ceramic is also constantly upgrading. Future development trends mainly focus on three aspects:

First, customized structure.
Through molecular design and substitution degree control, specialized CMCs suitable for different ceramic systems are being developed, ensuring optimal performance under specific temperature, pH, or electrolyte conditions.
Second, performance compositing.
Sodium carboxmethyl cellulose cerebral grade is increasingly being used in combination with other polymers such as polyvinyl alcohol (PVA) and polyacrylate (PAA) to balance strength, flowability, and sintering performance.
Third, environmental friendliness.
Future CMC products will place greater emphasis on biodegradability and environmental friendliness, meeting the needs of sustainable development in the ceramic industry.