نویسندگان
1 گروه رنگ، رزین و روکشهای سطح، پژوهشگاه پلیمر و پتروشیمی ایران
2 قطب علمی رنگ، موسسه پژوهشی علوم و فناوری رنگ و پوشش
3 دانشکده مهندسی نساجی، دانشگاه صنعتی امیرکبیر
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this work,a dyeable porous Aluminium oxide layer on the 6063 aluminium alloy was prepaired by a chemical or an electrochemical (anodizing) method. Different variables such as concentration oxidizing agent, temperature, pH of solution, oxygen purging in the chemical method and time and temperature in the anodizing methods were evaluated. Formed aluminium oxide layers were then dyed via direct dyestuff and sealed with thermoplastic acrylic clear coating. Physical and chemical properties of dyed and sealed prepared specimens were then studied by different techniques. Results revealed that maximum oxide layer thickness in chemical oxidizing method was achieved at pH=13, at 30 C and in the presence of oxygen gas and the best physical fastness and dyeability were achieved at pH=12. Oxide film thickness in the anodizing method was found to be much thicker as compared with those prepared via chemical solution. However, chemically oxidized specimens revealed better mechanical properties such as flexibility, enhanced uniformity and brilliant colors.
کلیدواژهها [English]
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