Ceramics

Hydroxypropyl Methylcellulose (HPMC) in Ceramics

HPMC plays a crucial role in the ceramics industry as a binder, plasticizer, thickener, and water retention agent. It enhances the workability, strength, and shaping properties of ceramic materials during processing.

Key Functions of HPMC in Ceramics:

  1. Binding Agent – Improves the adhesion of ceramic powders, ensuring uniformity and preventing cracks or deformation during shaping.
  2. Plasticizer – Enhances the plasticity of ceramic pastes and slurries, making them easier to mold and shape.
  3. Thickener & Rheology Modifier – Controls the viscosity of ceramic slurries, ensuring stable suspension and preventing sedimentation.
  4. Water Retention – Reduces water evaporation during drying, minimizing cracking and defects in the final ceramic product.
    Improved Green Strength – Provides mechanical strength before sintering, reducing handling damage and improving production efficiency.

Due to these benefits, HPMC is widely used in ceramic glazes, tile production, sanitary ware, and advanced ceramics, optimizing both processing performance and final product quality.

”Celopro®Cellulose Ether-Multi-functional additives”

Celotech’s cellulose ethers are versatile, water-soluble, and highly efficient. They have excellent burnout characteristics.

In ceramics, they act as binders that gel at high temps to boost cohesion, increase green strength, and prevent binder migration. They also serve as lubricants, emulsifiers, suspending agents, and surfactants.

In the production of honeycomb ceramics, the application of cellulose ether significantly improves the operability and dimensional accuracy of the product, reduces the scrap rate, and improves the overall quality of the product. These properties make cellulose ethers an indispensable additive in the ceramic industry. Celopro® cellulose ethers are mainly used as process auxiliaries for high-performance ceramics, with specific grades depending on the application.

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Frequently Asked Questions

HPMC are produced from natural renewable raw materials, mainly cotton pulp or wood pulp.

Yes. In addition to its application in the ceramic manufacturing process, cellulose ether can also be used for ceramic wastewater treatment. By adding cellulose ether, suspended solids in wastewater can gradually precipitate, achieving the goal of removing impurities. Meanwhile, cellulose ether can combine with organic matter in wastewater to form a complex that is easy to precipitate, improving wastewater treatment efficiency and reducing environmental pollution.
Cellulose ether improves the flowability and formability of ceramic materials through its unique molecular structure and properties, such as thickening, water retention, and bonding, thereby enhancing the physical properties and appearance quality of products. Specifically, cellulose ether forms a viscous solution in water, which can increase the viscosity of ceramic slurry, reduce fluidity and the possibility of collapse, while maintaining moisture and preventing cracks and defects caused by rapid drying
1.Improve the strength of ceramic green embryos:
Cellulose ether, as a water-soluble polymer compound, forms a viscous solution in water and can act as a lubricant and adhesive in the ceramic manufacturing process, improving the strength of ceramic green embryos.
2.Improve the surface quality of ceramics:
Cellulose ether can form a thin film during the manufacturing process, covering the surface of the ceramic body, reducing surface tension, making the surface of the ceramic body smooth and uniform, avoiding cracking, and greatly improving the surface quality of the ceramic.
3.Adjust the fluidity of ceramics:
Cellulose ether has excellent rheological properties, which can effectively regulate the flowability of porcelain slurry, making it have suitable viscosity and flowability, and easy to form and process.

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