ULTRASONIC MISTING. PART 1, EXPERIMENTS ON APPEARANCE CHANGE AND IMPROVEMENT IN BONDING
STEFAN MICHALSKI, & CAROLE DIGNARD
ABSTRACT—Ultrasonic misting is a method of applying consolidation solutions to powdery surfaces that was developed at the Canadian Conservation Institute in 1989. The method was tested with four different consolidants, with water and ethanol carriers, and on binderless powdery paints of seven different pigments. Measurements were made of change in appearance after 1, 4, and 10 applications. Changes in cohesion and adhesion of the paint were measured on three of the pigments. Pigment, solvent, and consolidant all played a significant role in the results. Unacceptable color change can occur after wetting and drying by water alone in clay-type pigments. Gelatin in water gave the widest range of success: acceptable results in all but carbon black.
2. APPEARANCE CHANGE EXPERIMENTS
3. STRENGTH IMPROVEMENT: COHESION AND ADHESION
4. DISCUSSION OF ALL RESULTS: APPEARANCE AND STRENGTH
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