Apparently invisible. Chemistry in ceramics.

In the wet preparation of ceramic bodies, dispersants play an essential role in controlling slurry rheology, allowing high solids content to be maintained while ensuring flow properties compatible with the production process.In this episode, we examine the main factors affecting slurry rheology: viscosity and thixotropy, raw material characteristics, composition of the aqueous phase, and the different chemical families and mechanisms of action of deflocculants. We also explore the role of dosage and the deflocculation curve, explaining why there is no universal solution and why the optimal working range must be determined experimentally for each specific ceramic body and process conditions.

The growing use of large ceramic slabs, with increasingly larger formats and reduced thicknesses, has introduced new challenges in terms of processing, handling, installation and safety. In this context, back-meshing is a post-firing process in which a reinforcing mesh is bonded to the back of the slab, helping to retain fragments in the event of breakage while providing additional support during subsequent processing, handling and use.In this episode, we explore the back-meshing process, from mesh selection and the role of the two-component polyurethane adhesive system offered by Z&S Ceramco to different application technologies and the cross-linking stage. A journey through materials, chemistry and application technology to understand how mesh, adhesive and process need to work together to provide effective and reliable reinforcement.

Producing digital inks, glues and ink effects for ceramic decoration is a highly sophisticated process that relies on the careful integration of multiple formulation components. Achieving consistent performance, long-term stability and reliable production quality requires the use of a range of specialized additives, each playing a critical role in ensuring proper product functionality and processability.In this episode, we revisit the concept behind the DECOFLUX DP range: a modular additive platform developed to support ink manufacturers and ceramic companies that produce their own digital inks and glues in-house. From pigment grinding to final dilution, we explore how each element of the platform — from pre-optimized grinding media and universal dispersants to viscosity modifiers and stabilizing agents — has been designed to address the practical and evolving requirements of the formulation

Ceramic grit binders are often regarded as simple fixing agents, but their role within the production process is far more complex. In this episode, we explore how the management of rheology, particle suspension and application behavior directly influences the quality of the final result, and why the selection of a binder cannot be based solely on its adhesive strength.We trace the technological evolution of the GRANICER range, examining the characteristics and application logic behind its different product families. From solutions designed for dry applications to formulations developed for wet grit application, and up to the most recent systems engineered to provide greater flexibility, stability and integration with digital technologies, we analyse how each series was created to address specific production requirements.

This episode addresses the control of bacterial contamination in ceramic processes, a factor that is often invisible yet crucial for the stability of compounds and the quality of the final product. In a production context characterized by the unavoidable presence of organic substances, bacteria can rapidly proliferate, altering rheological properties and causing application defects.The episode analyzes the main intervention strategies, distinguishing between sanitizers, biocides, and preservatives, and presents the role of the PREVENTOL range in controlling contamination throughout the entire process.