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Fire test of high temperature polyimide composites

Reference number
Coordinator Swerea SICOMP AB - Swerea SICOMP AB, Mölndal
Funding from Vinnova SEK 300 000
Project duration March 2017 - December 2017
Status Completed
Venture Innovair/SMF

Purpose and goal

The project is part of Innovair SME-Flyg, with the overall aim of contributing to improving the possibilities for Swedish subcontractors to establish themselves as suppliers to the aerospace industry. In this specific project, the purpose has been to evaluate the fire properties of a carbon fiber composite made of a polymer provided by Nexam Chemicals to see if the fire resistance is sufficient for use in aircraft engine applications.

Expected results and effects

The technical results of the project have been in par with expectations, i.e. very good. The composites made with Neximid MHT-R exhibit extremely good fire properties, superior compared to traditional composites. Overall, the results indicate that there are well-motivated conditions for continued evaluation and development of technologies for using these materials in parts of an airplane engine that is subject to fire resistance requirements.

Planned approach and implementation

In the tests, samples have been exposed to 50 and 70 kW / m2 of heat flow in cone calorimeter tests. The results show that at lower heat flux, the materials do not ignite at all while it takes up to 3 minutes for ignition at the higher heat flux. This can be compared with an ignition time of about 40 seconds for conventional carbon fibre composites. Once ignited, the new composites burn with 80% lower intensity than traditional epoxy composite.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 25 November 2019

Reference number 2017-01689

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