T and solidify in the crack, socoating Hexestrol Autophagy without the need of microcaps expansion ofthe cracks, and also the cracks will continue to expandisunder the con create cracks and damage. Nevertheless, the coating devoid of microcapsules prone to produce the cracks, plus the cracks will continue to expand below the continuous action of environmental elements. It’s straight proved that microcapsules can imp of environmental elements. It’s straight proved that microcapsules can increase the aging resistance thermal stability of waterborne coatings. resistance and and thermal stability of waterborne coatings.Figure 12. 12. SEM images of coatingand with microcapsulesmicrocapsules C in oven: Figure SEM pictures of coating with out without the need of and with right after aging at 120 just after aging (A) without the need of microcapsules,with 6.0 microcapsules. without microcapsules, (B) (B) with 6.0 microcapsules.atAppl. Sci. 2021, 11,15 ofFigure 12. SEM images of coating without and with microcapsules soon after aging at 120 in oven: (A) Figure 12. SEM images of coating without having and with microcapsules following aging at 120 in oven: (A) with no microcapsules, (B) with six.0 microcapsules. without microcapsules, (B) with 6.0 microcapsules.Figure 13. SEM photos of coating devoid of and with microcapsules immediately after aging at 160 in oven: (A) Figure 13. SEM photos of coating with out and with microcapsules soon after aging at at 160 Coven: (A) Figure 13. SEM photos of coating devoid of and with microcapsules just after aging 160 in in oven: with out microcapsules, (B) with 6.0 microcapsules. (A) devoid of microcapsules, (B) with six.0 microcapsules. without having microcapsules, (B) with six.0 microcapsules.Appl. Sci. 2021, 11, x FOR PEER REVIEWFigure 14. SEM photos of coating without and with microcapsules just after aging in UV weather reFigure 14. SEM photos of coating devoid of and with microcapsules soon after aging UV climate reFigure 14. SEM images of coating with out and with microcapsules right after aging in in UV weather sistance test: (A) with out microcapsules, (B) with 6.0 microcapsules. sistance test: (A) with no microcapsules, (B) with six.0 microcapsules. resistance test: (A) devoid of microcapsules, (B) with six.0 microcapsules.16 ofThe change of chemical composition of waterborne coatings with out microcapsules The change of chemical composition of waterborne coatings without the need of microcapsules just Redaporfin site before and soon after aging tests is usually observed in Figure 15. The characteristic absorption just before and soon after aging tests is usually observed in Figure 15. The characteristic absorption peaks of methyl and methylene are at 2943 cm1 and 2875 cm1. The characteristic absorppeaks of methyl and methylene are at 2943 cm1 and 2875 cm1 . The characteristic tion peak of OH is at 1731 cm1, plus the characteristic absorption peak of carbon oxygen absorption peak of OH is at 1731 cm1 , as well as the characteristic absorption peak of carbon 1 single bond in ester group is at 1166is at . The cm1 . The chemical composition with the oxygen single bond in ester group cm 1166 chemical composition from the waterborne coating before and immediately after aging will not aging does not adjust, indicating that the cause waterborne coating just before and after modify, indicating that the aging test is not going to aging chemical not result in chemical reaction of theis the infrared spectrum with the coating with test will reaction on the coating. Figure 16 coating. Figure 16 is definitely the infrared spectrum six.0 microcapsule before and immediately after aging. It is actually observed that the characteristic peak posiof the coating with 6.0 microcapsule ahead of a.
