COMPOSITE METAL AND POLYMER PART, USE IN PARTICULAR IN THE AUTOMOTIVE FIELD

摘要

17 Composite metal and polymer part, use in particular in the automotive field The invention relates essentially to a composite part comprising at least one sheet of steel coated with at least one polymeric film formed beforehand by extrusion of a polymeric blend comprising at least the following components: - a polymer formed of a dispersion of elastomer nodules in a polypropylene matrix, the proportion of elastomer in the matrix being less than 20% by weight of the combination formed by the matrix and the elastomer, - a first antioxidant from the family of the phenolic antioxidants for a content by weight of greater than or equal to 0.2%, - a second antioxidant from the family of the hydroperoxide-decomposing antioxidants for a content by weight of greater than or equal to 0.1 %, - reinforcing fillers for a content by weight of less than 10%. The invention relates in addition to a process for the manufacture of this composite part and to the application of this composite part in the motor vehicle and transportation fields.