Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
J. Phys. IV France 03 (1993) C7-1559-C7-1564
Behaviour of thermoplastic polymers during explosive decompressions in a petroleum environmentB. DEWIMILLE, J. MARTIN and J. JARRIN
Institut Français du Pétrole, Division Chimie Appliquée, Polymères et Matériaux, Avenue de Bois Préau, BP. 311, 92506 Rueil Malmaison cedex, France
Thermoplastic polymers are used in the field of petroleum where they may encounter very severe conditions. So we are induced to study the ageing behaviour and the effect of rapid decompressions in a gaseous environment. In the latter case our aim is to define the limits of use and to identify the parameters influencing degradations. Such damaging is essentially of two types : (1) local in the form of blisters and (2) under extreme conditions, more homogeneous microscopic damage of the "foaming" type. Damage of the blistering type may threaten the integrity of the polymer part, and the microscopic damage does not necessarily affect the mechanical behaviour, for example the impact strength.
© EDP Sciences 1993