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首页> 外文期刊>RSC Advances >The effect of the surface coating of a strontium mono-aluminate europium dysprosium-based (SrAl2O4:Eu2+,Dy3+) phosphor by polyethylene (PE), polystyrene (PS) and their dual system on the photoluminescence properties of the pigment
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The effect of the surface coating of a strontium mono-aluminate europium dysprosium-based (SrAl2O4:Eu2+,Dy3+) phosphor by polyethylene (PE), polystyrene (PS) and their dual system on the photoluminescence properties of the pigment

机译：聚乙烯（PE），聚苯乙烯（PS）及其双系统对颜料的光致发光性质的锶单 - 铝酸酯的表面涂层（SRAL2O4：EU2 +，DY3 +）磷光体的影响

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SrAl _(2) O _(4) :Eu ~(2+) ,Dy ~(3+) as a known strontium mono-aluminate europium dysprosium-based phosphor is widely used in paints and coating formulations as a photoluminescence pigment. It has two major drawbacks: improper dispersion in organic-based paints and weak water and moisture resistance. To address the above-mentioned drawbacks, the surface coating of phosphors with polyethylene and polystyrene individually and in combination using a solution technique was performed. The FT-IR spectra showed that the used polymers were coated on the phosphor properly. Also, the EDS spectra showed the presence of elemental carbon for the treated phosphors with different amounts. No regular trend was observed for element ratios when the polyethylene content in the coating layer was reduced from 100 to 0%. Based on the XRD patterns, the crystalline structure of the coated phosphors was not affected by the polymeric coated layer. In the SEM micrographs, the sharp and rough edges of the uncoated phosphor changed to a smooth and soft state for the coated phosphors. The brightness of most of the coated phosphors was independent of time and did not change over a period of 5 minutes after UV irradiation. This property makes the polymeric coated phosphors suitable as photoluminescence pigments in all kinds of paints and coatings.
机译：SRAL _（2）O _（4）：EU〜（2+），DY〜（3+）作为一种已知的锶单铝酸核苷铕的磷光体，广泛用于涂料和涂料配方作为光致发光颜料。它有两个主要缺点：在有机基涂料和水中的水分和水分耐水中不当。为了解决上述缺点，使用聚乙烯和聚苯乙烯单独和使用溶液技术组合的磷光体的表面涂层。 FT-IR光谱表明使用的聚合物适当地涂覆在磷光体上。此外，EDS光谱显示出对处理磷光体的元素碳的存在，其量不同。当涂层中的聚乙烯含量从100-0％降低时，对元素比没有观察到常规趋势。基于XRD图案，涂覆磷光体的晶体结构不受聚合物涂层的影响。在SEM显微照片中，未涂覆的磷光体的锋利和粗糙边缘变为涂覆磷光体的平滑和软状态。大多数涂层磷光体的亮度与时间无关，在紫外线照射后5分钟内没有改变。该特性使聚合物涂覆的磷光体适合于各种涂料和涂料中的光致发光颜料。

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