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Oxit graphene biến tính bằng phosphat alkyl như phụ gia giảm ma sát và mài mòn trong dầu
Tóm tắt
Đã thành công trong việc tổng hợp oxit graphene biến tính bằng phosphat alkyl (GON-DDP) sử dụng dodecanol, ethanol amine và oxit graphene (GO) tự chế làm tiền chất. Cấu trúc và hình thái của GON-DDP đã được xác định bằng các phương pháp FT-IR, XPS, TG/DSC, SEM và TEM. Kết quả xác định cho thấy các chuỗi phosphat alkyl dài đã được gắn thành công trên bề mặt GO, điều này đảm bảo khả năng phân tán của GON-DDP trong dầu nền hydroisomer hóa dewax (VHVI8). Sau đó, các tính chất ma sát của GON-DDP với vai trò là phụ gia giảm ma sát và chống mài mòn trong VHVI8 đã được đánh giá trên máy thử bốn quả cầu và hệ thống thử nghiệm SRV. Kết quả cho thấy hệ số ma sát và đường kính vết mài mòn đã giảm lần lượt 22,7% và 30,3% so với dầu nền VHVI8 nguyên bản. Hơn nữa, tải trọng không bị kẹt của VHVI8 đã được nâng lên đáng kể bằng cách thêm GON-DDP. Cuối cùng, cơ chế bôi trơn đã được đề xuất dựa trên phân tích Raman trên bề mặt bị mài mòn của các quả cầu thép.
Từ khóa
#Oxit graphene #phosphat alkyl #phụ gia giảm ma sát #mài mòn #dầu nền #VHVI8Tài liệu tham khảo
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