Objective Development of the polymide resin system, known as B1, involved producing a newly synthesized monomer, 178A2, as a replacement for methylene dianiline used in the PMR15 system. Production scale quantities of B1 have been produced.B1 composite property data has shown significantly lower weight loss at a high temperature (300 C) than PMR15; similar property retention to PMR15 in interlaminar shear and flexural property tests in a range of 250 C to 300 C for 6000 h; and similar microcracking properties as PMR15. The level of toxicity for the B1 formulation is less than that for PMR15.B1 is currently being worked on in 2 prototypes: the leading cycle section of an Alpha jet tail plane and in a fighter plane engine duct.THE THERMOSETTING POLYIMIDE, PMR-15, IS THE LEADING CONTENDER FOR USE IN POLYMER MATRIX COMPOSITES CAPABLE OF APPLICATION AT TEMPERATURES AROUND 250-300 CELSIUS DEGREES. ALTHOUGH THE PROPERTIES OF PMR-15 ARE GENERALLY GOOD, ITS WIDESPREAD USE IN AIRCRAFT AND AERO ENGINES HAS BEEN HAMPERED BY A NUMBER OF DRAWBACKS. AMONG THESE ARE MICROCRACKING DUE TO THERMAL CYCLING, HIGH TEMPERATURE PROCESSING, IRREPRODUCIBILITY AND THE TOXICITY OF THE CONSTITUENT METHYLENE DIANILINE. THE MAIN AIM OF THE BRITE PROGRAMME IS TO DEVELOP A HIGH TEMPERATURE POLYIMIDE WITH EXCELLENT PROPERTIES FOR CONTINUOUS USE ABOVE 250 CELSIUS DEGREES. FEATURES OF THE NEW SYSTEM SHOULD INCLUDE LOW TOXICITY, EASY PROCESSING, TOUGHNESS AND RESISTANCE TO MICROCRACKING DUE TO THERMAL CYCLING. Fields of science engineering and technologymaterials engineeringcompositesengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraftnatural scienceschemical sciencespolymer sciences Programme(s) FP1-BRITE - Multiannual research and development programme (EEC) in the fields of basic technological research and the applications of new technologies (BRITE), 1985-1988 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator MTU AERO ENGINES GMBH EU contribution No data Address Dachauer Strasse, 665 MUENCHEN Germany See on map Links Website Opens in new window Total cost No data Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all BP Oil International Ltd United Kingdom EU contribution No data Address 1 Finsbury Circus EC2M 7BA London See on map Total cost No data Dornier Luftfahrt GmbH Germany EU contribution No data Address An der Bundesstraße 31 88039 Friedrichshafen See on map Total cost No data ERA TECHNOLOGY LTD United Kingdom EU contribution No data Address Cleeve Road KT22 7SA LEATHERHEAD, SURREY See on map Total cost No data
