Cao Yangyang, Wang Zheng, Wan Jieru, He Yuzhu, Li Yunqiang, Wang Sheng, Wang Yanli, Song Dalei, Zhang Tao
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
J Colloid Interface Sci. 2024 Sep;669:912-926. doi: 10.1016/j.jcis.2024.05.041. Epub 2024 May 8.
Polyelectrolyte-encapsulated nanocontainers can effectively respond to changes of pH and thus control the on-demand release of corrosion inhibitors. A pH-responsive release system (Phen-Tpp@MTNs-PDDA) was developed based on the cationic polyelectrolyte poly dimethyl diallyl ammonium chloride (PDDA) encapsulated mesoporous TiO nanocontainers (MTNs) loaded with 1,10-phenanthroline (Phen) and tripolyphosphate ions (Tpp) corrosion inhibitors. The epoxy coating (EP) embedded with Phen-Tpp@MTNs-PDDA (Phen-Tpp@MTNs-PDDA/EP) demonstrates superior self-healing properties and confers long-term protection on the metal substrate through the cooperative effect of Phen and Tpp. Simultaneously, this hybrid coating is endowed with corrosion sensing capability based on the color development originating from the interaction of Phen and carbon steel. This self-healing and corrosion-sensing multifunctional coating provides an effective strategy for the corrosion protection of metals.
聚电解质封装的纳米容器能够有效响应pH值变化，从而控制缓蚀剂的按需释放。基于负载有1,10 - 菲啰啉（Phen）和三聚磷酸根离子（Tpp）缓蚀剂的阳离子聚电解质聚二甲基二烯丙基氯化铵（PDDA）封装的介孔TiO纳米容器（MTNs），开发了一种pH响应释放系统（Phen-Tpp@MTNs-PDDA）。嵌入Phen-Tpp@MTNs-PDDA的环氧涂层（EP）（Phen-Tpp@MTNs-PDDA/EP）表现出优异的自愈性能，并通过Phen和Tpp的协同作用为金属基底提供长期保护。同时，这种复合涂层基于Phen与碳钢相互作用产生的显色反应而具备腐蚀传感能力。这种自愈和腐蚀传感多功能涂层为金属腐蚀防护提供了一种有效策略。
