Abstract This paper focuses on the preparation of metallic pigmented powder coatings with high color stability via a self-designed microwave bonding device. With the increasing environmental regulation on the use of traditional metallic paint, there has been a corresponding interest in metallic pigmented powder coating, owing to its zero VOCs emission, high protective property as well as sparkling aesthetic appearance. metallic pigmented powder coatings are mainly composed of two non-compatible ingredients: base powder coating(s) and metallic pigment(s). Bonding the two kinds of materials together is an effective approach to eliminate their non-compatibility problem and ensure color stability. Here, a self-designed bonding device based on microwave heating was invented to bond metallic pigmented powder coatings. Furthermore, a direct and quantitative characterization method, ash test, was first used to reveal the bonding quality by analyzing the mass percentage of metallic pigment in the powders. A comprehensive investigation on non-bonded powder was performed as a control test. The microwave-bonded samples were prepared with the device at various temperatures and rotating speeds followed by evaluation with ash test. After microwave treatment, reliable bonding of base powder coating and metallic pigment were proved via a series of characterizations, such as ash test, SEM, EDS, optical observation and size analysis. Therefore, the microwave bonding method is trusted to be a feasible and effective production method of metallic pigmented powder coatings.

中文翻译：

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使用新方法制备具有高颜色稳定性的铝金属着色粉末涂料：微波粘合

摘要 本文重点研究了通过自行设计的微波键合装置制备具有高颜色稳定性的金属着色粉末涂料。随着对传统金属漆使用的环保法规日益严格，金属有色粉末涂料由于其零VOCs排放、高防护性能以及闪闪发光的美学外观而受到了相应的关注。金属着色粉末涂料主要由两种不相容的成分组成：基础粉末涂料和金属颜料。将两种材料粘合在一起是消除其不相容性问题并确保颜色稳定性的有效方法。在这里，发明了一种基于微波加热的自行设计的粘合装置来粘合金属着色粉末涂料。此外，灰分测试是一种直接的定量表征方法，它首先通过分析粉末中金属颜料的质量百分比来揭示粘合质量。作为对照试验，对非粘结粉末进行了全面调查。用该装置在不同温度和转速下制备微波粘合样品，然后用灰分试验进行评估。微波处理后，通过灰分测试、SEM、EDS、光学观察和尺寸分析等一系列表征证明了基体粉末涂料与金属颜料的可靠结合。因此，微波粘合法被认为是一种可行且有效的金属着色粉末涂料生产方法。首次用于通过分析粉末中金属颜料的质量百分比来揭示粘合质量。作为对照试验，对非粘结粉末进行了全面调查。用该装置在不同温度和转速下制备微波粘合样品，然后用灰分试验进行评估。微波处理后，通过灰分测试、SEM、EDS、光学观察和尺寸分析等一系列表征证明了基体粉末涂料与金属颜料的可靠结合。因此，微波粘合法被认为是一种可行且有效的金属着色粉末涂料生产方法。首次用于通过分析粉末中金属颜料的质量百分比来揭示粘合质量。作为对照试验，对非粘结粉末进行了全面调查。用该装置在不同温度和转速下制备微波粘合样品，然后用灰分试验进行评估。微波处理后，通过灰分测试、SEM、EDS、光学观察和尺寸分析等一系列表征证明了基体粉末涂料与金属颜料的可靠结合。因此，微波粘合法被认为是一种可行且有效的金属着色粉末涂料生产方法。用该装置在不同温度和转速下制备微波粘合样品，然后用灰分试验进行评估。微波处理后，通过灰分测试、SEM、EDS、光学观察和尺寸分析等一系列表征证明了基体粉末涂料与金属颜料的可靠结合。因此，微波粘合法被认为是一种可行且有效的金属着色粉末涂料生产方法。用该装置在不同温度和转速下制备微波粘合样品，然后用灰分试验进行评估。微波处理后，通过灰分测试、SEM、EDS、光学观察和尺寸分析等一系列表征证明了基体粉末涂料与金属颜料的可靠结合。因此，微波粘合法被认为是一种可行且有效的金属着色粉末涂料生产方法。