Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-1493 - C7-1503
DOI http://dx.doi.org/10.1051/jp4:19937234
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-1493-C7-1503

DOI: 10.1051/jp4:19937234

Tendances de recherche dans le domaine des adhésifs à haute performance

G. RABILLOUD and B. SILLION

CEMOTA, BP. 3, 69390 Vernaison, France


Abstract
The high performance adhesives must exhibit good mechanical properties in a wide range of temperatures in different environments for a long time. The aromatic and heterocyclic structures are needed to obtain chemical and thermal resistance. - The linear polymers offer good mechanical properties in term of fracture toughness, but they require high temperature and high pressure for the processing in order to insure good wettability. In addition, the temperature service is limited by the transition. Some examples of linear polyimide will be discussed. - The crosslinkable systems are telechelic aromatic oligomers with end groups such as maleimides, acetylenes or nadimides. These systems offer good wettability, but the cure cycle is more complicated than the one of linear system. The mechanical properties are maintained up to 370°C for a short period of time. - The blend of linear polymer and crosslinkable oligomers were studied in this case of epoxy resins and elastomers and thermoplastics. Recently, it was mentioned that the blend of linear polyimides and crosslinkable bis-maleimide or bis-nadimide improve the properties of each component, and these semi-IPN'S concept will be presented.



© EDP Sciences 1993