Plastic and nonmetallic article shaping or treating: processes – Shaping or treating luminescent material
Patent
1990-08-28
1992-10-27
Johnston, Jill
Plastic and nonmetallic article shaping or treating: processes
Shaping or treating luminescent material
25022714, 264 401, 264 402, 356133, 436 55, 436172, B29C 3502, G01N 2164
Patent
active
051587203
ABSTRACT:
An apparatus and method for in situ monitoring the viscosity and cure of resins using viscosity dependent fluorescence uses a fiber optic waveguide to introduce light to the resin of a wavelength exciting fluorescence and to conduct the emitted light to a monitor. The emitted light parameters correlate to the viscosity and cure conditions of the resin. The apparatus and method may be used to control composite construction and to provide information on the in service condition of composites.
REFERENCES:
patent: 3659974 (1972-05-01), Neugroachl
patent: 3791792 (1974-02-01), Lindsay
patent: 3935053 (1976-01-01), Armstrong, Jr.
patent: 4003707 (1977-01-01), Lubbers, et al.
patent: 4044600 (1977-08-01), Claxton et al.
patent: 4075493 (1978-02-01), Wickersheim
patent: 4215275 (1980-07-01), Wickersheim
patent: 4312228 (1982-01-01), Wohltjen
patent: 4346599 (1982-08-01), McLaughlin et al.
patent: 4440699 (1984-04-01), Smid et al.
patent: 4455268 (1984-06-01), Hinrichs et al.
patent: 4510103 (1985-04-01), Yamaguchi et al.
patent: 4904080 (1990-02-01), Afromowitz
Oster, et al., J. Am Chem. Soc., 78, 1581 (1956) "Fluorescence and Internal Rotation".
Sharafy et al. J. Am. Chem. Soc., 93, 4119 (1971) Viscosity Dependence of Fluorescense Quantum Yields.
Law, Chemical Physics Letters, 75, 545 (1980) Fluorescence Probes for Microenvironments.
Law, Photochemistry and Photobiology, 33, 799 (1981) Fluorescence Probes for Microenvironments.
Loutfy, Macromolecules, 14, 270 (1981) High Conversion Polymerization Fluorescense Probes.
Senturia, et al., J. Adhesion, 15, 69 (1982) In-Situ Measurement of the Properties of Curing Systems.
Forser, et al. Z. Phys. Chem, 75(1-2), 63 (1971) Effect of Viscosity on the Fluorescense Yield of a Dye.
Loutfy, J. Polymer Sci, 20,825 (1982) Fluorescence Probes for Polymerization Reactions.
Loutfy, et al., Macromolecules, 16, 452 (1983) Effect of Polymer Chain Tacticity on Fluorescence.
Levy, Am. Chem Soc. Apr. 1984 Viscosity Dependent Self-Probe Fluorescence of an Epoxy Resin.
Johnston Jill
McDonnell Douglas Corporation
Renner Edward H.
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