Method of making microscopic particles containing imbedded fluor

Details Method of making microscopic particles containing imbedded fluor Method of making microscopic particles containing imbedded fluor

1992-01-21

1993-07-20

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264 5, B29B 910

Patent

active

052290417

ABSTRACT:
Microscopic, neutrally buoyant particles containing fluorescing compounds used for tracers of large scale turbulent flows. The particles are generated by dissolving acrylics in a solvent and mixing the solution with fluorescing dyes. This mixture is sprayed into a heated chamber where the solvent evaporates, and the solid acrylic with the imbedded dye settles on the bottom of the chamber. The dust is collected, and the particles are separated according to size using a filter. Dye residue on the particles' surface is washed leaving the dye imbedded within the particles. The particles are then used within flow fields.

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Chemical Engineers' Handbook, 5th Ed. pp. 20-58 to 20-59.

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