Study on the property of polyolefin cable plastic prepared by electron beam irradiation

Electromechanical products exported to the EC market for wire and cable applications must meet the requirements of the RoHS. Blends consisting of high density polyethylene (HDPE)/ethylene vinyl acetate copolymer (EVA) and magnesium hydroxide (Mg(OH)₂) as a matrix were investigated by electron bean irradiation. The method of cross-linking and adding an auxiliary flame retardant solution overcomes the problem that arises from a high loading of halogen free flame retardant that results in poor material performance. The effects of various components on material performance were analyzed. The established relationship can be used in actual production to provide heat resistance, be Flame retardant, low smoke, halogen free and have irradiation cross-linking to optimize cable material formulation. The main performance index meets the national standard of 125 ℃ heat radiation cross-linking of a low smoke zero halogen flame retardant polyolefin insulation material, as well as related EU requirements. (authors)