Outgassing measurements of clad and unclad carbon composite laminates

Mark E. Frink; Lane A. Darnton; Edward M. Silverman

doi:10.1117/12.140730

18 December 1992 Outgassing measurements of clad and unclad carbon composite laminates

Mark E. Frink, Lane A. Darnton, Edward M. Silverman

Proceedings Volume 1754, Optical System Contamination: Effects, Measurement, Control III; (1992) https://doi.org/10.1117/12.140730
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Measured outgassing rates are presented and compared for several laminated carbon/epoxy and carbon/thermoplastic structural materials. Outgassing rates were measured with the samples at 298 K, with a temperature controlled quartz crystal microbalance (TQCM) collector at one of two temperatures. Mass accumulation at 175 K was used to collect primarily large polymeric molecules escaping the composite matrix. Mass accumulation at 100 K was used to collect all significant outgassed species including water. Once characterized, some samples were clad with molecular barrier coatings and retested to determine whether cladding could impede outgassing in space-like conditions. The outgassing test procedures employed are described, and a comparison of these with the ASTM E595 procedure is discussed.

Citation Download Citation

Mark E. Frink, Lane A. Darnton, and Edward M. Silverman "Outgassing measurements of clad and unclad carbon composite laminates", Proc. SPIE 1754, Optical System Contamination: Effects, Measurement, Control III, (18 December 1992); https://doi.org/10.1117/12.140730

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