نویسندگان
1 گروه پوششهای سطح و خوردگی؛قطب علمی رنگ، موسسه پژوهشی علوم و فناوری رنگ و پوشش
2 گروه پژوهشی پوششهای سطح و خوردگی، مؤسسه پژوهشی علوم و فناوری رنگ و پوشش
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Since the automotive industry has been developed in producing high performance automotive coatings recently, demands for automotive coatings with high UV stability and good appearance in addition to low costs have been increased. For this purpose, in this research two different kinds of UV stabilizers, one hydroxyl phenyl triazine and the other based on Hindered Amine Light Stabilizer (HALS)components were used in clear coats of automotive coatings system. 1 Wt% of these additives were added to the clear coats using mechanical mixer device thereafter the effects of the absorbers on the appearance and some properties of the automotive coatings system were evaluated after exposing the coatings to accelerated weathering in a salt spray and also running a xenon test. Results showed that the presence of small amounts of the UV absorbers can improve the weathering resistance of the automotive coatings, besides it was found that hydroxyl phenyl triazine absorber had better effects than HALS. This can be related to alkaline nature of HALS and retarding effect in curing reactions.
کلیدواژهها [English]
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