The role of binders in ceramic production

- Apr 15, 2020-

In the preparation of raw materials, mechanical methods such as pulverization and mixing are combined with binding agents and dispersing agents to achieve dispersion, as far as possible without containing aggregated particles. The binding agent is adsorbed on the surface of the raw material particles by the type and molecular weight, the properties of the particle surface and the solubility of the solvent, etc., and plays a role in preventing the powder raw material from agglomerating through the three-dimensional stabilization effect.


In the forming process, the binder gives plasticity to the raw material, has a water-retaining function, and improves the strength and construction workability of the formed body. In general, the binder hinders the sintering of ceramics, so it should be decomposed and volatilized by heating in the degreasing process.


Therefore, it is necessary to select organic materials that can be easily removed and free of harmful inorganic salts and metal ions to ensure product quality.


In the preparation of raw materials, mechanical methods such as pulverization and mixing are combined with binding agents and dispersing agents to achieve dispersion, as far as possible without containing aggregated particles. The binding agent is adsorbed on the surface of the raw material particles by the type and molecular weight, the properties of the particle surface and the solubility of the solvent, etc., and plays a role in preventing the powder raw material from agglomerating through the three-dimensional stabilization effect.


In the forming process, the binder gives plasticity to the raw material, has a water-retaining function, and improves the strength and construction workability of the formed body. In general, the binder hinders the sintering of ceramics, so it should be decomposed and volatilized by heating in the degreasing process.


Therefore, it is necessary to select organic materials that can be easily removed and free of harmful inorganic salts and metal ions to ensure product quality.


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