Chang Yijuan, Wu Zhihui
College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China.
Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
Polymers (Basel). 2023 Jun 27;15(13):2835. doi: 10.3390/polym15132835.
This study aimed to investigate the impact of different sandpaper sanding meshes on the mechanical and optical properties of microencapsulated sp. film. An orthogonal experiment revealed that sanding between primers had the most significant effect. Furthermore, an independent experiment implied that increasing the mesh size resulted in decreased surface roughness and decreased color difference, elongation at break, and gloss after liquid resistance. In the aging test, the color difference of the paint film increased with the aging time, and the gloss tended to stabilize. Additionally, the anti-aging gloss of 240 mesh sandpaper used between primers remained relatively stable. The paint film sanded with 240 mesh sandpaper between primers displayed small and regular cracks after temperature and UV aging. Overall, the paint film demonstrated good comprehensive performance when sanded with 240 mesh between primers, 240 mesh between primer/topcoat, and 1000 mesh for topcoat. Self-repairing microcapsules showed better repair efficacy on the coating. This study provides a technical reference for the development of self-repairing coatings.
本研究旨在探讨不同砂纸打磨目数对微胶囊化sp. 漆膜力学性能和光学性能的影响。正交试验表明底漆之间的打磨影响最为显著。此外，独立试验表明，增大目数会导致表面粗糙度降低，耐液后色差、断裂伸长率和光泽度下降。在老化试验中，漆膜的色差随老化时间增加，光泽度趋于稳定。此外，底漆之间使用240目砂纸的抗老化光泽度相对稳定。底漆之间用240目砂纸打磨的漆膜在温度和紫外线老化后出现细小且规则的裂纹。总体而言，底漆之间用240目、底漆/面漆之间用240目、面漆用1000目砂纸打磨时，漆膜表现出良好的综合性能。自修复微胶囊对涂层显示出更好的修复效果。本研究为自修复涂料的开发提供了技术参考。
