NDLI: Molecularly Oriented Polymeric Thin Films for Space Applications

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Molecularly Oriented Polymeric Thin Films for Space Applications

Content Provider	Semantic Scholar
Author	Fay, Catharine C. Stoakley, Diane M. Anne K. St. Clair
Copyright Year	1997
Abstract	ABSTRACT The increased commitment from NASA and private industry to the exploration of outer spaceand the use of orbital instrumentation to monitor the earth has focused attention on organicpolymeric materials for a variety of applications in space. Some polymeric materials haveexhibited short-term (3-5 yr) space environmental durability; however, future spacecraft arebeing designed with lifetimes projected to be 10-30 years. This gives rise to concern thatmaterial property change brought about during operation may result in unpredicted spacecraftperformance. Because of their inherent toughness and flexibility, low density, thermalstability, radiation resistance and mechanical strength, aromatic polyimides have excellentpotential use as advanced materials on large space structures. Also, there exists a need forhigh temperature (200-300°C) stable, flexible polymeric films that have high opticaltransparency in the 300-600nm range of the electromagnetic spectrum. Polymers suitable forthese space applications were fabricated and characterized. Additionally, these polymerswere molecularly oriented to further enhance their dimensional stability, stiffness, elongationand strength. Both unoriented and oriented polymeric thin films were also cryogenicallytreated to temperatures below -184°C to show their stability in cold environments anddetermine any changes in material properties.KEY WORDS: Molecular Orientation, Colorless Polyimides, Space Applications, CryogenicTreatmentThis paper is declared a work of the U. S. Government and is not subject to copyrightprotection in the United States.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040110266.pdf
Alternate Webpage(s)	http://www.cs.odu.edu/~mln/ltrs-pdfs/NASA-98-43sampe-ccf.pdf
Alternate Webpage(s)	http://techreports.larc.nasa.gov/ltrs/PDF/1998/mtg/NASA-98-43sampe-ccf.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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