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Real-time measurement system for tracking birefringence, weight, thickness, and surface temperature during drying of solution cast coatings and films
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10.1063/1.3687444
/content/aip/journal/rsi/83/2/10.1063/1.3687444
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/2/10.1063/1.3687444
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Glass substrate with cast polymer solution and projections of measurement location (Pyrometers: P1, P2, P3, P4, and Lasers: L1, L2, L3).

Image of FIG. 2.
FIG. 2.

Casting procedure with Dr. Blade apparatus: before (1) and after casting (2).

Image of FIG. 3.
FIG. 3.

Real-time solution drying platform. From right to left it is numbered as: (1) Hot air blower, (2) connection of blower to the tunnel, (3) vertical baffles, (4) drying sample and sensor location, and (5) open end of the tunnel.

Image of FIG. 4.
FIG. 4.

Sample and sensor location (1) cast iron base, (2) balance and plastic box, (3) small breadboard for optical components, (4) large breadboard for optical components and sensors, (5) laser displacement sensors, (6) visible range light sources, (7) UV light source, and (8) sample platform.

Image of FIG. 5.
FIG. 5.

Substrate with cast sample in position; (1) optical paths and fiber optic cables, (2) pyrometers, (3) honeycomb structured air diffuser, and (4) position of laser displacement sensors.

Image of FIG. 6.
FIG. 6.

Basic schematic of three lasers and thickness measurement of drying solution.

Image of FIG. 7.
FIG. 7.

Sample platform; (1) top of the sample platform where the substrate with the solution is introduced, (2) legs of the sample platform, and (3) Balance in contact with the sample platform for weight measurements.

Image of FIG. 8.
FIG. 8.

GUI of the program, parameters updated real-time for observation during the experiment.

Image of FIG. 9.
FIG. 9.

UV light source modification.

Image of FIG. 10.
FIG. 10.

Effect of honeycomb structured air diffuser at high air speed experiments.

Image of FIG. 11.
FIG. 11.

Real-time drying data of PAI-DMAc solution. Filled stars indicate the offline measurements of thickness (red star), in-plane birefringence (green star), and out-of-plane birefringence (blue star) of dried film. Corresponding stars are located at the end of each curve.

Image of FIG. 12.
FIG. 12.

% solid and % solvent calculated from the initial concentration and real-time weight data. Filled stars indicate the results of TGA for the dried films.

Image of FIG. 13.
FIG. 13.

Propagation of drying front in PEO-water solution traced by camera (air flow direction is from right to left).

Image of FIG. 14.
FIG. 14.

Real-time measurement during UV curing of urethane-acrylate with photo-initiator.

Image of FIG. 15.
FIG. 15.

Real-time drying data of water based black paint.

Image of FIG. 16.
FIG. 16.

Weight (g), thickness (mm), and temperature (°C) data as a function of time (s) for clay-NMP solution drying.

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/content/aip/journal/rsi/83/2/10.1063/1.3687444
2012-02-28
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Real-time measurement system for tracking birefringence, weight, thickness, and surface temperature during drying of solution cast coatings and films
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/2/10.1063/1.3687444
10.1063/1.3687444
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