This Ceramic Grade CMC is a functional additive designed specifically for ceramic production processes. It is widely used as a binder and rheology modifier to improve slurry stability, enhance green body strength, and support smooth forming operations. The product provides consistent viscosity control and good dispersion, helping reduce defects such as cracking and deformation during shaping and drying. With stable quality and reliable performance, it is suitable for various ceramic manufacturing methods including pressing, casting, and extrusion.
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It improves green body strength (unfired ceramic), controls slurry viscosity, and ensures uniform shaping—critical for producing ceramics with consistent quality and minimal defects. Its ability to withstand high temperatures during firing while leaving minimal residue makes it indispensable for both traditional (e.g., tiles, sanitaryware) and advanced (e.g., technical ceramics) production processes.
Parameter | Specification |
Appearance | White powder |
Viscosity (2% solution, 25°C) | 10–2000 mPa·s |
Degree of Substitution (DS) | ≥0.8 |
pH Value (1% solution) | 6.5–8.0 |
Moisture Content | ≤10% |
Increases the strength of unfired ceramics by 20–40%, reducing breakage during handling and transportation. Ceramic Grade CMC significantly enhances the mechanical strength of green bodies, reducing breakage and edge damage during handling, drying, and transportation. This helps ceramic manufacturers improve production yield and process stability.
Controls viscosity to prevent solid particle settling, ensuring uniform casting, molding, and extrusion.The product provides reliable viscosity control in ceramic slurries, ensuring uniform particle distribution and smooth flow behavior. Stable rheology supports consistent forming results and reduces defects caused by uneven material distribution.
Burns off cleanly during firing, leaving ≤0.5% residue and avoiding surface defects or structural issues in finished ceramics.CMC decomposes cleanly during firing without leaving harmful residues. It does not negatively affect firing color or final ceramic properties, making it suitable for high-quality ceramic products.
Maintains structural integrity during pre-firing drying stages (up to 120°C).
The product is compatible with commonly used ceramic powders and additives. It integrates easily into existing formulations without disrupting established production processes.
Manufactured under strict quality control, this Ceramic Grade CMC ensures consistent performance between batches. This reliability is critical for continuous ceramic production lines requiring stable formulation behavior.
Slip Casting: Stabilizes ceramic slurries for producing complex shapes such as sanitaryware, ceramic figurines, and technical ceramic components.
Extrusion Molding: Improves plasticity in clay bodies for manufacturing tiles, pipes, and refractory bricks.
Glaze Formulation: Enhances glaze suspension and adhesion to ceramic surfaces, ensuring uniform color and finish.
Q: How does Ceramic Grade CMC affect the firing temperature of ceramics?
A: It decomposes completely below 500°C, so it does not alter the ceramic’s optimal firing temperature or final material properties.
Q: Can Ceramic Grade CMC be used with clay containing high mineral content (e.g., kaolin, feldspar)?
A: Yes, its high DS (≥0.8) ensures strong compatibility with various clay compositions and mineral additives.
Q:Is this CMC suitable for different ceramic forming methods?
A:Yes. It is suitable for pressing, casting, and extrusion processes commonly used in ceramic manufacturing.
Q: Will it affect the firing process or final ceramic color?
A:No. The product burns out cleanly during firing and does not affect final color or ceramic performance when used at recommended levels.
Q: Does it help reduce defects in ceramic production?
A:Yes. By improving green strength and slurry stability, it helps reduce cracking, deformation, and breakage during forming and drying.
When CMC, a unique linear polymer, is added to water, its hydrophilic groups interact with water, forming a solvation layer that gradually disperses CMC molecules. The high molecular weight CMC develops a supporting network structure stabilized by hydrogen bonds and Van der Waals forces, showcasing its bonding capabilities. In the ceramic industry, CMC acts as an excipient, plasticizer, and reinforcement.
1. Minimal usage yields significant improvements in the breaking strength of the green body.
2. Increases processing speed and reduces energy consumption.
3. Exhibits low ignition loss, burns without residue, and does not affect the original color.
4. Facilitates technological processes by preventing issues like crawling and dry spraying.
5. Enhances deagglomeration, increasing glaze fluidity and simplifying glaze application.
6. Serves as an excipient for the raw material, improving clay plasticity and facilitating body shaping.
7. Offers strong resistance to mechanical wear, with minimal disruption to molecular chains during ball milling or mechanical stirring.
8. Functions as a reinforcer for raw materials, increasing breaking strength and stability while reducing damage rates.
9. Demonstrates excellent suspension and dispersion properties, preventing clumping of lean materials and color pastes, ensuring even distribution.
10. Promotes uniform moisture evaporation from raw materials, preventing drying and cracking, particularly effective for larger floor and polished tiles.
CMC acts as a polyelectrolyte, functioning as both a binder and a suspension agent. When incorporated into glaze pulp, water enters the gel, and the hydrophilic groups interact with water, causing it to swell. The gel becomes hydrated within while forming a bound water layer on the exterior. Initially, micelles in the liquid cement are free; however, due to their various sizes and shapes, they cluster together through Van der Waals forces and bond with the water layer, creating a large network structure with enhanced adhesive properties.
1. Rheological properties can be effectively modified with low concentrations, aiding in the enameling process.
2. Improves the bonding capacity of the substrate, significantly enhancing glaze surface strength and preventing peeling.
3. Produces a high gloss finish on the glaze surface and stabilizes the glaze pulp, reducing pinholes post-firing.
4. Exhibits outstanding spreading and colloid protection properties, maintaining stable dispersion of glazing pulp.
5. Increases the surface tension of glaze materials, preventing water absorption into the substrate, thereby enhancing glossiness.
6. Reduces the risk of cracking and damage during transportation by maintaining structural integrity post-enameling.
CMC offers excellent solubility and high transparency in its solutions, leaving no residue. Its shear-thinning and lubrication properties significantly improve the adaptability for printing applications. CMC applied in ceramic printing glazes demonstrates excellent thickening, dispersion, and stabilizing effects:
1. Provides optimal printing rheology for smooth application.
2. Ensures clear patterns and consistent coloration during printing.
3. Achieves a high level of smoothness, good lubrication, and excellent overall results.
4. Features good water solubility with no residue, preventing clogging of screens.
5. Offers high solution transparency and effective net permeability.
6. Demonstrates outstanding thixotropic and lubricating properties, greatly enhancing applicability in ceramic glaze printing.
Penetration glazes often contain soluble salts with partial acidic properties. CMC in these glazes exhibits excellent stability against acid, salt, and maintains consistent viscosity during use or storage, preventing color variations due to viscosity changes, thus greatly enhancing stability.
1. Exhibits good solubility and effective net permeability without clogging.
2. Offers compatibility with glazes, ensuring stability in decorative glazes.
3. Demonstrates good stability against acids, alkalis, and salts, maintaining viscosity in penetration glazes.
4. Provides excellent leveling properties and stability in viscosity, preventing chromatic aberrations from viscosity fluctuations.
Type | Viscosity (mPa.s) | Degree of Substitution (DS) | Purity (%) | pH | Drying loss (%) |
C-1001 | 1%, 400-700 | ≥1.0 | ≥95 | 6.5-8.5 | ≤10 |
C-1002 | 1%, 400-700 | ≥0.95 | ≥95 | ||
C-1592 | 1%, 800-1200 | ≥0.90 | ≥95 | ||
C-0492 | 1%, 200-400 | ≥0.95 | ≥95 | ||
C-1583 | 1%, 800-1200 | ≥0.8 | ≥80 | ||
C-0664 | 2%, 400-700 | ≥0.60 | ≥60 | ||
C-2074 | 1%, 2000-2500 | ≥0.90 | ≥90 | ||
IM8 | 2%, 700-1000 | ≥0.80 | ≥90 | ||
9L | 1%, 30-50 | ≥0.90 | ≥90 |
*We can customize according to the client's required specifications.
