Stress and pressure dependent thermo-oxidation response of poly (bis)maleimide resins

Nan An, G. P. Tandon, R. Hall, K. Pochiraju

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thermo-oxidative degradation in high temperature resins can be accelerated by increased oxygen pressure and the stress in the material. While the oxygen pressure increases the adsorbed oxygen concentration on the surface, stress affects the diffusivity. We describe a comprehensive sorption, oxidation (diffusion-reaction) and stress evolution model for polymers and composites and apply the model for oxidation growth prediction in (bis)maleimide resins. The model framework uses a pressure-dependent boundary sorption model and stress-dependent diffusion model. Evolution of thermo-oxidative degradation in a commercially available resin and composite system is experimentally characterized and the results are used for identifying model parameters and model validation. The key contributions are the characterization and validation of a single parameter for stress-diffusion coupling. The parameter value is identified at one stress-level and the oxidation behavior at higher level is simulated. The results show that the effect of substrate stress and the oxygen pressure can be effectively simulated using the developed framework.

Original languageEnglish
Title of host publicationChallenges in Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics
Pages129-137
Number of pages9
DOIs
StatePublished - 2014
Event2013 Annual Conference on Experimental and Applied Mechanics - Lombard, IL, United States
Duration: 3 Jun 20135 Jun 2013

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume2
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference2013 Annual Conference on Experimental and Applied Mechanics
Country/TerritoryUnited States
CityLombard, IL
Period3/06/135/06/13

Keywords

  • Bismaleimide
  • Material behavior parameters
  • Oxidation
  • Pressure-accelerated
  • Stress-accelerated

Fingerprint

Dive into the research topics of 'Stress and pressure dependent thermo-oxidation response of poly (bis)maleimide resins'. Together they form a unique fingerprint.

Cite this