(1. 北京科技大學(xué) 新材料技術(shù)研究院，北京 100083；
2. 國網(wǎng)山東省電力公司 電力科學(xué)研究院，濟(jì)南 250002)
摘 要: 基于鋅防護(hù)層修復(fù)及鋼結(jié)構(gòu)防護(hù)的背景，針對一種鋅防護(hù)層修復(fù)涂料，研究其組分(復(fù)合鋅粉、有機(jī)-無機(jī)雜化改性劑)對涂層防護(hù)性能的影響，并與同類進(jìn)口產(chǎn)品對比分析。結(jié)果表明：在顏基比(質(zhì)量比)4:1時，隨復(fù)合鋅粉含量的增加，涂層的附著力增大；有機(jī)-無機(jī)雜化改性劑可有效提高涂層的附著力與耐蝕性；多形態(tài)復(fù)合鋅粉涂層的耐蝕性優(yōu)于球狀復(fù)合鋅粉涂層的。在熱浸鋅、電鍍鋅、Q235(St3)基材上，鋅防護(hù)層修復(fù)涂層耐紫外大于2000 h，耐鹽霧大于3000 h；且在Q235(St2)基材上耐鹽霧大于2000 h，其防護(hù)性能遠(yuǎn)高于同類進(jìn)口產(chǎn)品的。
關(guān)鍵字: 低表面處理涂料；富鋅涂料；鋅防護(hù)層；有機(jī)-無機(jī)雜化；復(fù)合鋅粉
（1. Institute of Advanced Materials and Technology, Beijing University of Science and Technology,
Beijing 100083, China;
2. Shandong Electric Power Research Institute, State Grid Shandong Electric Power Company, Ji’nan 250002, China）
Abstract:Based on the background of protective zinc layer repair and steel protection, one protective zinc layer repairing paint was studied. The influence of the components (compound zinc powder and organic-inorganic hybrid modifier) on coating performance was analyzed and compared. The results indicate that the coating adhesion increases with increasing the content of compound zinc powder at the pigment/binder mass ratio of 4:1, and the organic-inorganic hybrid modifier enhances the coating adhesion and corrosion resistance. Moreover, the coating with compound zinc powder of multiple forms has superior corrosion resistance than that of different spherical diameters. The resistance of UV accelerated aging and neutral salt spray on hot-dip zinc, galvanized steel sheet and Q235(St3) are more than 2000 h and 3000 h, respectively. The neutral salt spray resistance on Q235(St2) is longer than 2000 h, providing that it has higher protective ability than imported products.
Key words: surface-tolerant coating; zinc-rich paint; protective zinc layer; organic-inorganic hybrid; compound zinc powder
