| 초록 |
ATO (Antimony Tin Oxide) and ITO (Indium Tin Oxide) which are used in existing thermal barrier coating have raised cost and toxicity issues continuously. In this study, instead of ATO and ITO, CaCO3 extracted from oyster shells was used to compensate for the raised issue. Oyster shell is a by-product of oyster production and is subject to the environmental problem as a limitation of technology to treat them. If recycled, it can be used as inexpensive and eco-friendly materials. The particle shape of CaCO3 extracted from the oyster shell was confirmed to have a flake shape through an SEM(Scanning Electron Microscope), physical and chemical properties were confirmed by FT-IR(Fourier Transform Infrared Spectroscopy), TGA(Thermogravimetric Analysis), and Contact Angle. When the CaCO3 is given hydrophobicity on the surface by using a silane coupling agent, it is distributed on the surface of the coating evenly and expected to maximize the infrared reflection effect due to flake shape. |
