Aging Mechanism Of Epoxy Resin Sleeve After Long-term Contact With Pipeline Medium

In industrial pipeline systems, the interface between materials and the transported medium is constantly exposed to various chemical environments, placing stringent demands on material performance. As a common insulation and protection component, epoxy bushing undergoes changes in its internal polymer structure when exposed to media such as water, acids, alkalis, and salt mixtures for extended periods, leading to performance degradation. epoxy resin bushing is a thermosetting polymer material that forms a three-dimensional cross-linked network after curing. However, during service, external environmental factors can affect its structure.

When in contact with a chemical medium for a long period of time, microscopic chain segment breakage and structural relaxation may occur inside the material network of epoxy resin cast bushing. This is due to the gradual physical or chemical changes that occur in the polymer backbone and side groups under the penetration and diffusion of medium molecules. Acidic and alkaline media, water molecule swelling, and other factors can cause localized volume changes in the resin matrix, altering the original molecular arrangement and interfacial bonding, leading to a gradual decline in the material's mechanical and insulating properties.