Introduction To The Polyolefin Material Of Pre-insulated Sleeves

pre insulated sleeve typically uses polyolefins as its main constituent inserts. Polyolefins are a class of high-molecular polymers formed by the polymerization of olefin units; polyethylene (PE) and polypropylene (PP) are typical examples.

Polyolefins are easy to process due to their relatively simple chemical structure. This material can be molded into sheathing forms through heat shrinking, cross-linking, and extrusion to cover cables, metal conductors, or other components requiring insulation. For example, in pre insulated junction sleeve, the outer polyolefin layer shrinks and seals upon heating, forming a sheath structure that fits snugly against the internal components.

The linear or slightly branched structure of the polymer chains makes the material stable in both cold and hot environments. For manufacturing insulated joint sleeve, this plastic exhibits good performance in terms of processing flow, molding stability, and durability.