Propyl triethoxysilane isocyanate (IPTS) is used for impregnating glass fibers and inorganic silicon-containing fillers, which can improve the performance of various composite materials. Isocyanate propyl triethoxysilane (IPTS) is an excellent glass fiber treatment agent, which enhances the mechanical strength, electrical properties and anti-aging performance of composite materials. It is widely used in the surface treatment of glass fibers in polyethylene crosslinking: unsaturated resins, polyethylene, polypropylene resins and other glass fiber reinforced plastics, as well as in the synthesis of special coatings. Adhesive, surface moisture-proof treatment of electronic components, surface treatment of inorganic silicon fillers.