Bindemedlet

Bindemedlet is a substance that binds particles or components together in a composite material, forming a coherent solid through chemical reaction, crystallization, or evaporation of a solvent. It ensures cohesion and enables stress transfer within the material. Bindemedlet is used wherever particles must be held in place, including mortars, concretes, clays, paints, inks, and papers. Bindemedlet can set through hydraulic reactions (requiring water) or non-hydraulic curing (not relying on water), and may be inorganic or organic.

Inorganic bindemedlet includes cement, lime, gypsum, and hydraulic lime, which harden by hydration or carbonation. Organic bindemedlet includes natural materials such as starch, casein, and gum arabic, as well as synthetic polymers such as polyvinyl acetate, acrylics, epoxy resins, and polyurethanes. Some bindemedlet formulations are designed to be water-resistant, while others are breathable; some set rapidly, others slowly.

Key properties of bindemedlet include adhesive strength, setting time, durability, elasticity, porosity, and chemical compatibility with aggregates or pigments. Environmental and health considerations vary: cement production emits CO2, while certain bio-based or waterborne bindemedlet options can reduce environmental impact.

Applications span construction (cement paste, mortar, concrete, plasters), ceramics and pottery (binders in clay bodies), painting and coatings (binders in pigments), and papermaking (size agents), as well as additive manufacturing (binder jetting) in some processes.

Ongoing developments aim to reduce volatile organic compounds, enhance recyclability, and develop bio-based or waste-derived bindemedlet to improve sustainability without compromising performance.