Term: Silane Coupling Agents

Category: Chemistry

Definition: Silane coupling agents are organofunctional silanes that serve as molecular linkages that form a connection between inorganic materials (glass, silica, metal oxide, ceramic) and organic polymers/coatings. Their chemical structure will have one silane molecule in the centre, with three alkoxy groups (–OR’) attached to the silane. The alkoxy group reacts with/in contact with a hydroxyl (-OH) group on an inorganic surface, while the organic functional group (R) has an affinity for/reacts with the polymer matrix. Dual reactivity of a silane coupling agent promotes strong bonds between polymers and inorganic materials at the interface, leading to improved mechanical performance, moisture resistance, and durability.

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