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Applying microwave energy to fabricate powder coatings with strong and stable metal shine
Progress in Organic Coatings ( IF 6.5 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.porgcoat.2020.105929
Wei Liu , Haiping Zhang , Yuanyuan Shao , Xinping Zhu , Yufu Wei , Hui Zhang , Jesse Zhu

Abstract Metallic pigmented powder coating, composed of coating powders and metallic pigments, has been drawing more attention and occupying more market share with more stringent environmental pressure on traditional metallic solvent paint. To overcome the shortcomings of the thermal bonding method that aims at bonding the two incompatible ingredients, a self-designed microwave bonding device was first developed and tested in the present work. Taking advantage of the heating-selectivity of the microwave, a lower bonding temperature was obtained when compared to the thermal bonding method. Also, through the analysis of bonding rate and color difference, a higher bonding quality and enhanced color stability were found. More bondings between coating particles and Al flakes were clearly observed by SEM and EDS in the microwave-bonded samples. The microwave bonding is proved to be a feasible and efficient method and thus the bonding device has great potential to replace the present bonding machine.

中文翻译:

应用微波能量制造具有强而稳定的金属光泽的粉末涂料

摘要 由涂料粉末和金属颜料组成的金属有色粉末涂料,在对传统金属溶剂涂料的环境压力越来越大的情况下,越来越受到关注,占据了越来越多的市场份额。为了克服热粘合方法将两种不相容的成分粘合在一起的缺点,本工作首先开发并测试了一种自行设计的微波粘合装置。利用微波的加热选择性,与热粘合方法相比,获得了较低的粘合温度。此外,通过对粘合率和色差的分析,发现了更高的粘合质量和增强的颜色稳定性。通过 SEM 和 EDS 在微波结合的样品中可以清楚地观察到涂层颗粒和铝片之间的更多结合。
更新日期:2020-12-01
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