Guo Mengxue, Li Gang, Cai Minkun, Hou Xingyu, Huang Kaixi, Tang Jigen, Guo Chuan Fei
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
Department of Cultural Heritage Center, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
Nano Lett. 2023 Feb 22;23(4):1371-1378. doi: 10.1021/acs.nanolett.2c04642. Epub 2023 Feb 3.
Pottery is the oldest art and plays a landmark role in human civilization. The repair of ceramic relics often uses acrylic resins and cyanoacrylate adhesives. However, existing adhesives often take hours to get cured, and wet adhesion is not possible. We herein propose a redox initiator-triggered hydrogel adhesive, of which robust (∼700 J m) and wet adhesion with potsherds can be achieved within a few seconds. The high toughness lies in the self-limited delocalized rupture of the porous interface, and the wet adhesion is due to the hydrophilic precursor and its free radical polymerization. The hydrogel adhesive also exhibits high aging resistance for stable preservation of ∼400 annuals. We have applied the adhesive to the restoration of artifacts excavated from Yinxu, Anyang (∼1300 BC) and the Xia Jiao Shan site (∼4000 BC, Neolithic), and the adhesive is expected to be extended to applications beyond archeology.
陶器是最古老的艺术形式，在人类文明中起着里程碑式的作用。陶瓷文物的修复通常使用丙烯酸树脂和氰基丙烯酸酯粘合剂。然而，现有的粘合剂通常需要数小时才能固化，无法进行湿粘接。在此，我们提出一种氧化还原引发剂触发的水凝胶粘合剂，它能在几秒钟内实现与陶片的强力（约700 J/m）和湿粘接。高韧性源于多孔界面的自限性离域断裂，而湿粘接则归因于亲水性前体及其自由基聚合。这种水凝胶粘合剂还具有高耐老化性，可稳定保存约400年。我们已将该粘合剂应用于对从安阳殷墟（约公元前1300年）和夏家山遗址（约公元前4000年，新石器时代）出土文物的修复，并且该粘合剂有望扩展到考古学以外的应用领域。
