کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7105243 | 1460480 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flow-induced orientation of flakes in metallic coatings - II. The orientation mechanism
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Flow-induced orientation of flakes in metallic coatings - II. The orientation mechanism Flow-induced orientation of flakes in metallic coatings - II. The orientation mechanism](/preview/png/7105243.png)
چکیده انگلیسی
In part I of this article, we derived an expression for the time-dependent orientation of flakes in a metallic coating. Here, this expression is used to investigate the mechanism that makes metallic flakes to orient predominantly parallel to the coating surface. Using numerical examples representative for basecoats, we show that flakes are not oriented already during the impact of paint droplets on the substrate, because the resulting flake motions are quickly damped. Instead, the orientation process takes place mainly during the subsequent spreading of the droplets over the surface. The associated velocity of paint flow was shown to be large enough to orient all flakes parallel to the substrate surface. We also show that in a later stage of the application process the convection flows due to evaporation of solvent are strong enough to affect the orientation of flakes, especially for small flakes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 124, November 2018, Pages 104-109
Journal: Progress in Organic Coatings - Volume 124, November 2018, Pages 104-109
نویسندگان
Eric Kirchner,