Bindemiddelskelet

Bindemiddelskelet, or the skeleton of a binder, refers to the structural framework that holds together a binding system in materials such as paints, coatings, adhesives, composites, and construction products. It can be organic, consisting of polymer backbones with crosslinkable groups, or inorganic, formed by hydration or condensation reactions that create a three‑dimensional network. The skeleton largely determines mechanical properties, chemical resistance, and durability.

In polymers, bindemiddelskelet is the network architecture—the backbone and crosslinks that connect monomer units. The density of crosslinks, molecular weight, and topology (linear, branched, network) influence stiffness, elasticity, glass transition temperature, and solvent resistance. In cementitious systems, the skeleton is formed by hydration products such as calcium silicate hydrate and ettringite, which develop a porous yet binding network that holds aggregates together and provides strength.

Formation occurs during curing or hydration: polymerization and crosslinking for organic binders, or cement hydration for inorganic systems. Additives can modify the skeleton by acting as plasticizers, fillers, or coupling agents, altering final properties such as flow, adhesion, and durability.

Functions of the bindemiddelskelet include binding pigments and fillers, transmitting load, and providing adhesion to substrates. The skeleton also governs interaction with the environment, affecting permeability, weathering resistance, and long-term performance. Its structural features are analyzed through rheology, spectroscopy, thermal analysis, and microscopy to predict and optimize material behavior.

Overall, the bindemiddelskelet is central to the performance of binder-containing materials, linking chemical makeup to macroscopic properties and service life.