PSI - Issue 10

I. Iliopoulos et al. / Procedia Structural Integrity 10 (2018) 295–302

300

I. Iliopoulos et al. / Structural Integrity Procedia 00 (2018) 000 – 000

6

5 o C

7 o C

10 o C

Initial

Blank

Epoxy

PU

Acrylic

Fig. 4. Condensation effect at 40 o C (%RH=100), (Red PLA 3D printed protective cover for the thermocouple is visible).

Table 1. Coatings’ features and water collection rates (ml· m -1 · h -1 )

Sample

Primer Thickness

Topcoat thickness

Topcoat Mass

Experimental conditions

20 o C – 100% RH

40 o C – 100% RH

5 o C * 0.262 0.354 0.348 0.313

7 o C * 0.250 0.297 0.357 0.308

10 o C *

5 o C * 1.010 1.790 1.992 1.885

7 o C * 1.093 1.845 1.980 1.838

10 o C *

( μ m)

( μ m)

(mg)

Blank

n/a

n/a

n/a

0.281 0.223 0.380 0.313

1.059 1.845 1.987 1.922

PU

50 55

110 120 150

55 55 60

Epoxy Acrylic

n/a

* Sample temperature

Fig. 5. (a) Potentiodynamic polarization curves of samples and (b) Open current potential (OCP) measurements in 3.5% wt NaCl.