Manufacturing Process Of Epoxy Resin Sleeve Under Wet Winding Process

The core of the wet winding process is the impregnation and winding of continuous fibers around a mold. A suitable epoxy resin system is brought into full contact with the fiber cloth or fiber bundle, ensuring the resin permeates each fiber. As the mold rotates slowly, the fibers are wound uniformly under tension control, forming a epoxy bushing shape and thickness.

The epoxy resin formulation used in wet winding typically has low viscosity and good fiber wettability. This design helps the resin distribute evenly between the fibers, avoiding interlayer defects caused by uneven resin distribution. The formulation often uses acrylic rubber, reactive diluents, and curing agents, mixed with the base epoxy resin to form a composite system suitable for winding.

During the operation, the resin mixture is heated and mechanically stirred to maintain suitable temperature and uniformity, ensuring good flowability and penetration during the impregnation stage. Subsequently, the impregnated fibers are wound around the mold in multiple layers until the required thickness and structural requirements of epoxy resin bushing are achieved.