Preparation of surface energy controlled automotive clearcoats loaded with functional silicon additives: Studying the resistance against tree gum attack |
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| Affiliation: | 1. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran;2. Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, No. 59, Vafamanesh St., Hosainabad Sq., Lavizan, Tehran, Iran;1. Department of Operative Dentistry and Endodontics, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China;2. Department of Oral and Maxillofacial Surgery, Tianjin Stomatological Hospital, 75 Dagu Road, Heping District, Tianjin 300041, PR China;1. Key Laboratory of Photovoltaic Materials, Department of Physics and Electronics, Henan University, Henan 475004, PR China;2. Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, PR China |
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| Abstract: | The aim of this study is enhancing an automotive clearcoat easy-to-clean property against simulated tree gum (Arabic gum) using hydroxyl-functional silicone polyacrylate additives having different hydroxyl contents. The clearcoat surface, mechanical and chemical properties were studied using a contact angle measuring device, dynamic mechanical thermal analysis (DMTA) and Fourier Transform Infrared spectroscopy (FT-IR) respectively. It was found that additive with lower hydroxyl content gave rise to better easy-to-clean properties of the clearcoat against Arabic gum. This additive also resulted in lower contact angles and higher cross-linking density, tensile stress and work of break of the clearcoat. |
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| Keywords: | Automotive clearcoat Functional additives Arabic gum Surface free energy Tensile |
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