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Một lớp phủ hydrogel vi mạch bền và tự làm sạch với việc cải thiện khả năng sử dụng Cu2+ cho chống bám bẩn trên biển
Tóm tắt
Hydrogel có những ưu điểm như hệ số ma sát thấp và khả năng hấp thụ nước cao, tương tự như lớp nhầy của biểu bì ở các sinh vật biển lớn, do đó nhận được sự chú ý rộng rãi trong lĩnh vực chống bám bẩn trên biển. Trong nghiên cứu này, một lớp phủ chống bám bẩn bền được chuẩn bị bằng cách tích hợp micro-bột PVA/PAAm hydrogel với nhựa epoxy để giải quyết các vấn đề về độ bám dính kém giữa hydrogel và bề mặt sau khi hấp thụ nước cũng như tỷ lệ sử dụng thấp của tác nhân chống bám bẩn Cu2O. Kết quả cho thấy lớp phủ với hàm lượng micro-bột hydrogel thấp khó hình thành các mảng điểm hấp thụ nước dày đặc. Ngược lại, khi hàm lượng micro-bột hydrogel cao, các lỗ để lại sau khi ép hydrogel sau khi hấp thụ nước trở nên có hại cho lớp phủ. Hơn nữa, lớp phủ chống bám bẩn có hàm lượng micro-bột 10% sở hữu hiệu suất toàn diện vượt trội. Bề mặt của nó có thể hình thành các mảng điểm hấp thụ nước dày đặc, và lớp phủ có hiệu suất tự làm sạch tuyệt vời cùng với tính chất chống bám bẩn dựa trên lực bám dính nổi bật với các bề mặt. Hơn nữa, việc trộn tác nhân chống bám bẩn Cu2O với lớp phủ chống bám bẩn cải thiện tỷ lệ sử dụng Cu2+ nhờ cấu trúc vi xốp của hydrogel. Do đó, lớp phủ này có thể cung cấp hướng dẫn kỹ thuật cho việc ứng dụng rộng rãi hydrogel trong lĩnh vực chống bám bẩn trên biển.
Từ khóa
#hydrogel #lớp phủ chống bám bẩn #Cu2+ #hiệu suất tự làm sạch #nhựa epoxyTài liệu tham khảo
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