XLPE
Designation for cross-linked polyethylene. In cross-linking, individual polymer molecules are tied together to form a network structure. Polyethylene can be cross-linked by irradiation or chemical means. The result of either method is a three-dimensional network of resin molecules. The cross-linked material no longer has a true melting point, but is converted to a thermal setting compound. XLPE has excellent insulating characteristics and good heat resistance.