Polyimides From a-BPDA and Aromatic DiaminesPolymers having low color and a favorable combination of other properties, including high glass-transition temperature (Tg) and high mechanical properties (strength, tensile modulus, and toughness) will find use in a variety of terrestrial and space applications. Some of the space applications will be in thin films used as membranes on antennas, solar concentrators, coatings on second-surface mirrors, solar sails, sunshades, thermal and optical coatings, and multi-layer thermal insulation blankets. Depending upon the application, the film will be required to exhibit a unique combination of such properties as resistance to degradation by ultraviolet light, visible light, and electrons; low color and/or low solar absorptivity; resistance to tearing and/or wrinkling during packaging and deployment; and high mechanical properties (e.g. high strength, stiffness, and toughness).
Document ID
20100021304
Acquisition Source
Langley Research Center
Document Type
Other - NASA Tech Brief
Authors
Hergenrother, Paul M. (NASA Langley Research Center Hampton, VA, United States)
Smith, Joseph G., Jr. (NASA Langley Research Center Hampton, VA, United States)
Connell, John W. (NASA Langley Research Center Hampton, VA, United States)
Watson, Kent A. (National Inst. of Aerospace Hampton, VA, United States)