2.4.5. Gloss Loss Measurements

The gloss of the coatings was measured on the Erichsen Picogloss model 503 equipment at 60◦ angle. The remaining gloss of the coating was determined by the following expression:

$$\text{Remaining glass (\%)} = \text{(G/G\_0)} \times 100\tag{2}$$

where G0 and Gt are gloss of the coating (dried at 60 ◦C in vacuum oven until the constant weight) before and after the aging test, respectively.
