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29 December 1999 Strength degradation of silica fibers by acetone immersion
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Proceedings Volume 3848, Optical Fiber Reliability and Testing; (1999)
Event: Photonics East '99, 1999, Boston, MA, United States
A single-layer UV-curable polyacrylate-coated telecommunications grade fused silica fiber was found to have a significant reduction in two-point bending strength after immersion in acetone. The two-point bending and tensile strengths of this fiber as a function of immersion time in acetone were determined, and this strength loss was not seen for 0.5-m gauge length tensile specimens. SEM and optical fractography was performed on the weak specimens, and the cause of the strength reduction is proposed to arise from particles smaller than 3 micrometers in the coating. These particles could cause surface flaws by sliding contact damage incurred during relative motion between the coating and the glass. This sliding could occur either while flexing the fiber in preparation for a bending strength measurement or due to coating elongation. While it is not clear which mechanism is operating, both are consistent with the observation that degradation is only observed for bending strength measurements.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew T. Taylor, M. John Matthewson, and Charles R. Kurkjian "Strength degradation of silica fibers by acetone immersion", Proc. SPIE 3848, Optical Fiber Reliability and Testing, (29 December 1999);

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