| Improved UV Stability of Unsaturated Polyester Coatings Reinforced with Graphene Quantum Dots |
| کد مقاله : 1047-ICOC |
| نویسندگان |
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عباس مدحی *1، محمد حسن مدحی2، امیر حسین مدحی2 1پژوهشگر پژوهشگاه رنگ 2مرکز رشدفناوری پژوهشگاه رنگ |
| چکیده مقاله |
| Unsaturated polyester (UP) resins are widely used in coatings and engineering composites due to their low weight, cost-effectiveness, and favorable mechanical properties. However, the aromatic rings in UP are susceptible to color changes, reduced durability, and weakening of mechanical properties caused by UV exposure [1]. Graphene quantum dots (GQDs), owing to their UV-absorbing and blocking capabilities, are a promising additive for protecting UP-based coatings [2-4]. This study examines the impact of incorporating 0.25 wt% GQDs on the color stability, fluorescence emission and mechanical properties of the coating. The results indicate that GQD addition effectively prevents color changes (∆E) and weakening of mechanical properties, significantly enhancing the durability and color stability compared to the neat UP film. |
| کلیدواژه ها |
| Graphene quantum dots, Color stability, Mechanical properties, Unsaturated polyester |
| وضعیت: پذیرفته شده |