Silane coupling agents are typically colorless to pale yellow liquids at room temperature, with a density ranging from approximately 0.8 to 1.2 g/cm³. Their molecular structure is characterized by one end containing hydrolyzable siloxy groups (which form silanols upon reaction with water) and the other end linked to functional groups capable of reacting with organic polymers (such as amino, vinyl, epoxy, etc.). Leveraging this "bridge-like" dual-reactive nature, their core application is to significantly enhance the interfacial adhesion between inorganic materials (e.g., glass fibers, fillers) and organic polymers (e.g., resins, rubbers). As a result, they are widely used in improving the performance of composite materials, surface treatment of fillers, and as adhesion promoters in sealants and coatings.