TANK HAVING A COMPOSITE WALL INCLUDING AN ORGANIC LAYER

摘要

The invention relates to a tank which can be used to house corrosive liquids, for example for hot water production, the wall of which is insensitive to chemical attack, and, in particular, to oxidation and chlorine. More specifically, the invention relates to a tank having a composite wall including a steel outer shell, an organic layer and an inner layer based on a thermoplastic polymeric compound modified by 10 % - 50 % of a diacid. Advantageously, the polymeric compound includes electronegative polar groups. For example, one such composite wall can include a steel outer shell, an intermediate epoxy resin layer and an inner layer comprising maleic anhydride-modified polypropylene. The invention also relates to a method for producing a composite walled tank, in which known techniques are used to apply an organic layer to the inner face of the steel shell in order to form an intermediate layer and subsequently the polymeric powder compound is melted in the metallised shell driven by a biaxial rotation system until a continuous polymeric layer is formed, which solidifies on cooling.