论文部分内容阅读
采用层层自组装技术将天然聚电解质壳聚糖、海藻酸钠和环保型缓蚀剂聚天冬氨酸交替沉积在纳米SiO_2表面,成功制备出智能纳米容器,将智能纳米容器分散到环氧涂层中构建仿生自愈合涂层。通过扫描电子显微镜(SEM)和傅立叶转换红外线光谱仪(FTIR)对智能纳米容器进行了表征,利用电化学阻抗技术研究了涂层/Q235钢体系在3.5%NaCl溶液中的腐蚀行为。结果表明,自愈合涂层的防腐性能较普通环氧涂层显著提高,且涂层受损后能够自愈合。
A series of self-assembly techniques were used to deposit natural polyelectrolytes chitosan, sodium alginate and polyaspartic acid, an environmentally friendly corrosion inhibitor, alternately on the surface of nano-SiO 2 to prepare intelligent nano-containers. The smart nano-containers were dispersed into epoxy Build bionic self-healing coatings in the coating. The smart nanocomposites were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The corrosion behavior of the coating / Q235 steel in 3.5% NaCl solution was studied by electrochemical impedance spectroscopy. The results show that the anti-corrosion properties of self-healing coatings are significantly higher than those of ordinary epoxy coatings, and the self-healing coating can be self-healing after being damaged.