摘要
硅烷化处理是以硅烷偶联剂为主要原料的新型表面处理技术,常用于涂装前处理以提高金属基体与有机涂层的结合力或将其直接作为防腐蚀涂层。单纯的硅烷膜膜层较薄、表面有缺陷及裂纹,影响了其对金属的防护性能,需要对其进一步改性。综述了近年来国内外对硅烷化处理改性工艺的研究,详述了各种改性工艺对硅烷膜性能的影响,对耐蚀机理进行阐述,指出各种改性工艺存在的不足并提出进一步的研究方向。双层硅烷膜、添加纳米粒子、无机缓蚀剂、有机缓释剂以及硅烷与树脂复配等工艺明显提高了硅烷膜的性能,将多种改性工艺相结合可得到综合性能更加优异的硅烷膜。但还需要进一步研究改性机理,提高硅烷膜对不同基体的适用性及与涂装体系的配套性。
Silanization treatment which used the silane coupling agent as the main material had become a new type of surface treatment technology.It was commonly utilized in coating pretreatment to improve the adhesion between the metallic substrate and the organic coating or directly used as the anticorrosion film.However,pure silane film showed poor corrosion resistance because of the thin thickness and the defects/cracks on the surface.As a result,further modifications of the silane-based films were necessary before the application.In this paper,various modifications of the silanization treatments in the world such as the double-layer silane film,addition of nanoparticles,inorganic/organic corrosion inhibitor and silane/resin composite were summarized.Effects of different modifications on the performance of the silane-based films and the relevant corrosion resistance mechanisms were discussed in detail and the disadvantages of various modification methods were also indicated.The modification mechanisms should be further studied in depth,to improve the corrosion resistance performance,the applicability to different substrates and the compatibility with the coating system of the silane-based film.
作者
刘颖
王修春
江荣岩
Liu Ying;Wang Xiuchun;Jiang Rongyan(School of Material Science and Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Provincial Key Laboratory of Highstrength Lightweight Metallic Materials,Advanced Materials Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China)
出处
《山东化工》
CAS
2021年第3期72-78,共7页
Shandong Chemical Industry
基金
山东省科学院产学研协同创新基金(2018CXY-26)。
关键词
硅烷化处理
改性处理
纳米粒子
缓蚀剂
耐蚀性
silanization
modification treatment
nanoparticles
corrosion inhibitor
corrosion resistance
