Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Nghiên cứu thực nghiệm ảnh hưởng của chùm elektron đến phân bố điện trường trong vật liệu nano composite polyethylene phân nhánh/ZnO cho cáp trung thế được mô phỏng bằng COMSOL Multiphysics
Tóm tắt
Nghiên cứu này đã điều tra phân bố điện trường của cách điện cáp ngầm trong vật liệu nano oxit kẽm (ZnO) trong polyethylene phân nhánh (XLPE) cho cáp trung thế (MV). Các vật liệu nano ZnO được thu được từ ba phương pháp chế tạo đã được phân loại bằng kính hiển vi điện tử truyền qua (TEM). Các hạt nano ZnO thu được là hình bán cầu với kích thước từ 35–55 nm trên hình ảnh TEM. Các mẫu phim XLPE/ZnO với các tỷ lệ trọng lượng hạt nano ZnO khác nhau (tức là 0, 1, 3 và 5%) đã được chiếu xạ với các liều lượng khác nhau của chùm electron 3-MeV (EB); 0 kGy, 15 kGy, 20 kGy và 25 kGy. Mẫu phim XLPE/5-ZnO tối ưu, có hàm lượng hạt nano ZnO (5 wt%), được chiếu xạ ở 25 kGy, theo độ dẫn điện xoay chiều (AC)/ một chiều (DC) (AC: 1 × 10−4 S/m; DC: 12.44 × 10−2 S/m) và độ điện dung tương đối tối thiểu (2.24), đã được thu nhận. COMSOL Multiphysics đã được sử dụng để mô phỏng phân bố điện trường trong cáp MV với cách điện XLPE/5-ZnO 25-kGy. Điện trường đồng nhất tối đa được tìm thấy ở giữa mẫu phim XLPE/5-ZnO 25-kGy, thay vì ở trên cùng hoặc dưới cùng, điều này có thể được cho là do độ điện dung tương đối thấp đáng kể của mẫu cáp XLPE/5-ZnO 25-kGy mới.
Từ khóa
#cáp trung thế #polyethylene phân nhánh #oxit kẽm #điện trường #mô phỏng #Electron beam #vật liệu nano.Tài liệu tham khảo
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