NGHIÊN CỨU ẢNH HƯỞNG CỦA NANOCOMPOSITE AgCu/SiO2 ĐẾN TÍNH CHẤT CƠ LÝ VÀ CHỐNG ĂN MÒN CỦA LỚP PHỦ EPOXY

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Tác giả: Do Dinh Trung, The Hoai Le, Minh Viet Nguyen, Ngoc Linh Nguyen, Van Kien Pham, Dinh Thao Vu

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học & Công nghệ - Trường Đại học Công nghiệp Hà Nội, 2023

Mô tả vật lý: tr.122

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Among organic coatings, epoxy coating is an excellent material for corrosion prevention in structural metals in Vietnam’s tropical marine climate conditions. This article presents some survey results of physico-mechanical properties and anticorrosion of epoxy coating which combined with nanocomposite AgCu/SiO2. The physico-mechanical properties are determined according to international standards, corrosion resistance test of epoxy coating is carried out according to ISO 9227:2017. The survey result showed that, the epoxy coating combined with 1.0% AgCu/SiO2 nanoparticles, adhesion increased by 13.4%, impact resistance increased by 9.1%, hardness of coating increased by 10.5%, abrasion resistance decreased by 20.0%, other properties have not changed much. After 720 hours of testing (30 test cycles), the epoxy coating combined with 1.0% AgCu/SiO2 nanoparticles, the degree of blistering has reached S0, the degree of cracking - S1, the degree of flaking - S2, the degree of rusting - S0 and adhesion is reduced from 5.06 MPa down to 4.91MPa.Trong các loại lớp phủ hữu cơ, lớp phủ epoxy là vật liệu chống ăn mòn tuyệt vời đối với kết cấu kim loại trong điều kiện khí hậu biển nhiệt đới Việt Nam. Bài báo trình bày một số kết quả khảo sát tính chất cơ lý và khả năng chống ăn mòn của màng sơn epoxy kết hợp nanocomposite AgCu/SiO2. Các tính chất cơ lý của lớp sơn được xác định theo tiêu chuẩn quốc tế, thử nghiệm khả năng chống ăn mòn của lớp phủ epoxy được tiến hành theo tiêu chuẩn ISO 9227:2017. Kết quả khảo sát cho thấy, lớp phủepoxy kết hợp với 1,0% nanocomposite AgCu/SiO2 làm tăng độ bám dính lên 13,4%, độ bền va đập tăng 9,1%, độ cứng màng sơn tăng 10,5%, độ mài mòn giảm 20,0%, các tính chất khác thay đổi không nhiều. Sau 720 giờ thử nghiệm (30 chu kỳ), lớp phủ epoxy kết hợp 1,0% nanocomposite AgCu/SiO2, độ phồng rộp đạt mức S0, độ rạn nứt - S1, độ bong tróc - S2, độ gỉ - S0 và độ bám dính giảm từ 5,06MPa xuống 4,91MPa.

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