Optical properties of polymer-based coatings containing metallic particles: effect of particle shape and binder

IF 2.3 4区材料科学 Q2 Chemistry

Journal of Coatings Technology and Research Pub Date : 2023-04-24 DOI:10.1007/s11998-023-00766-7

Kuilong Song, Ming Xie, Qing Ai

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引用次数: 0

Abstract

Polymer-based coatings containing metallic microparticles are a kind of functional material with effective spectral selectivity. The spectral radiative transfer model of polymer-based coatings is built based on geometrical optics, and the spectral radiative characteristics of the coatings were investigated by Monte Carlo ray-tracing method. The coatings consist of aluminum particles with different shapes as fillers and four kinds of polymer resins as binders, respectively. After verifying the reliability of the method, the effect of particle shape and binder on the infrared emission properties in the range of 8–14 μm is systematically investigated. The results demonstrate that adding flake particles into the coating can obtain lowest infrared emissivity, which is at most 86.79% lower than the coating containing spherical particles when the volume fraction is 30%. The mean emissivity of Al/acrylic resin, Al/polyetherimide (PEI), Al/polymethyl methacrylate, and Al/polystyrene (PS) composite coatings is 0.46, 0.48, 0.41, and 0.22, respectively. Al/PS composite coating has the minimum mean infrared emissivity among these four kinds of polymer-based coatings, which is 54.2% lower than Al/PEI composite coating. The method proposed in this work will provide theoretical guidance for experimental research.

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含金属颗粒聚合物基涂层的光学性能:颗粒形状和粘结剂的影响

含有金属微粒的聚合物基涂层是一种具有有效光谱选择性的功能材料。基于几何光学建立了聚合物基涂层的光谱辐射传递模型，采用蒙特卡罗射线示踪方法研究了涂层的光谱辐射特性。该涂层分别由不同形状的铝颗粒作为填料和四种聚合物树脂作为粘合剂组成。在验证了该方法的可靠性后，系统地研究了颗粒形状和粘结剂对8 ~ 14 μm范围内红外发射性能的影响。结果表明:当涂层体积分数为30%时，片状颗粒的红外发射率比球形颗粒的红外发射率低86.79%;Al/丙烯酸树脂、Al/聚醚酰亚胺(PEI)、Al/聚甲基丙烯酸甲酯和Al/聚苯乙烯(PS)复合涂层的平均发射率分别为0.46、0.48、0.41和0.22。在四种聚合物基涂料中，Al/PS复合涂料的平均红外发射率最小，比Al/PEI复合涂料低54.2%。本文提出的方法将为实验研究提供理论指导。

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来源期刊

Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

4.40

自引率

8.70%

发文量

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.