A model for the thermo-oxidative degradation of polyimides Academic Article

abstract

• Polyimides, due to their superior mechanical behavior at high temperatures, are used in a variety of applications that include aerospace, automobile and electronic packaging industries, as matrices for composites, as adhesives etc. In this paper, we extend our previous model in S. Karra and K. Rajagopal (Mech. Mater. 43(1):54-61, 2011), to include thermo-oxidative degradation of these high temperature polyimides. Appropriate forms for the Helmholtz potential and the rate of dissipation are chosen to describe the degradation. The results for a specific boundary value problem, using our model, compares well with the experimental creep data for PMR-15 resin that is aged in air. Springer Science+Business Media, B. V. 2011.

authors

• Rajagopal, Kumbakonam

published proceedings

• MECHANICS OF TIME-DEPENDENT MATERIALS

author list (cited authors)

• Karra, S., & Rajagopal, K. R.

citation count

• 15

complete list of authors

• Karra, Satish||Rajagopal, KR

publication date

• August 2012

publisher

• Springer Nature  Publisher

published in

• Mechanics of Time-Dependent Materials  Journal

keywords

• Aging
• Degradation
• Entropy Production
• Oxidation
• Polyimide
• Viscoelasticity

Digital Object Identifier (DOI)

• 10.1007/s11043-011-9165-6

start page

• 329

end page

• 342

volume

• 16

issue

• 3