Kết hợp tro bay biến tính silan và oxit sắt trong chế tạo màng sơn epoxy bảo vệ chống ăn mòn thép cacbon

• Tác giả: Văn Trước Bùi, Thùy Dương Nguyễn, Gia Vũ Phạm, Thị Xuân Hằng Tô, Anh Trúc Trịnh, Kế Oánh Vũ
• Ngôn ngữ: vie
• Ký hiệu phân loại: 667.9 Coatings and coating
• Thông tin xuất bản: Hóa học, 2012
• Mô tả vật lý: 502-506
• Bộ sưu tập: Metadata
• ID: 633853

Tóm tắt

Fly ash, a by-product of the Pha Lai thermo-power plan, was modified by 2-aminoetyl-3-aminopropyltrimetoxysilane. Epoxy coatings containing silane modified fly ash and iron oxide were prepared and applied on carbon steel. Structure of modified fly ash was analyzed by infrared spectroscopy and scanning electronic microscopy. Corrosion protection of epoxy coatings was evaluated by electrochemical impedance spectroscopy and adhesion measurements. The results obtained showed that particles of modified fly ash were coved by organic film formed by silane. Corrosion protection of epoxy coatings depends on ratio of fly ash and iron oxide. Epoxy coating containing modified fly ash provides higher corrosion protection than epoxy coating containing iron oxide. Epoxy coating with ration of fly ash and iron oxide of 20/1 0 has higher corrosion protection compared to coatings with ration of fly ash and iron oxide of 10/20.