The workability of ceramic bodies – including plasticity, strength, and flowability – directly impacts forming efficiency and product quality. As an essential component of ceramic formulations, binders can significantly improve these properties by adjusting the physical and chemical characteristics of the body. This article presents several practical cases demonstrating the effectiveness of binders in enhancing ceramic body workability.
Case Study 1: Enhancing the Plasticity of High-Alumina Bodies
High-alumina is a commonly used ceramic raw material, but its plasticity is relatively poor, easily leading to cracking during forming. Adding PVA (Polyvinyl Alcohol) as a binder can effectively improve the plasticity of high-alumina bodies. Experimental results show that adding 1.5% PVA increased the flexural strength of the body by 20% and reduced the cracking rate by 15%.
Case Study 2: Improving the Flowability of Slab Bodies
The forming of slab ceramics typically uses slip casting, requiring the slurry to have good flowability. Adding CMC (Carboxymethyl Cellulose) as a binder can reduce slurry viscosity and improve its flowability. Experimental data shows that adding 0.3% CMC increased the slurry flow time by 30% and improved the uniformity of the slab thickness by 10%.
Case Study 3: Strengthening Porous Ceramic Bodies
Porous ceramics, due to their unique structure, often have low strength and are brittle. Adding modified starch as a binder can enhance the bonding force between body particles and increase the body's strength. Experiments proved that adding 2% modified starch increased the compressive strength of the body by 25% and reduced the breakage rate during transportation.
Case Study 4: Optimizing the Forming Performance of Extruded Ceramic Bodies
During extrusion, the body needs to have good extrudability and shape retention. Adding Polyacrylamide (PAM) as a binder can improve the lubrication of the body and reduce extrusion resistance. Experimental results show that adding 0.1% PAM reduced the extrusion pressure by 10% and increased forming efficiency by 5%.
TopTime Ceramics has a professional ceramic materials R&D team that can provide customized binder solutions based on customer-specific needs, helping them improve body workability, enhance product quality, and increase production efficiency.