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مطالعه اثر حفاظتی نانو اکسید روی در مقابل هوازدگی چندسازه چوب-پلی پروپیلن | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 3، دوره 37، شماره 1 - شماره پیاپی 78، فروردین 1401، صفحه 17-27 اصل مقاله (976.17 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2021.353685.1666 | ||
| نویسندگان | ||
| داود رسولی* 1؛ حسین یوسفی2؛ مهدی مشکور2 | ||
| 1استادیار گروه تکنولوژی و مهندسی چوب، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران | ||
| 2دانشیار گروه تکنولوژی و مهندسی چوب، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران | ||
| چکیده | ||
| در این بررسی اثر نانو اکسید روی به‌عنوان جاذب نور فرابنفش بر مقاومت به هوازدگی چندسازه چوب-پلیپروپیلن مطالعه شد. برای این منظور، چندسازههای چوب-پلیپروپیلن با افزودن 0، 1، 2 و 3 درصد نانو اکسید روی به کمک مخلوطکن داخلی و پرس آزمایشگاهی ساخته شدند. سپس آزمون هوازدگی شدت گرفته به مدت 1480 ساعت (در توالیهای 0، 480، 960 و 1480 ساعت) روی آنها انجام شد. برای مطالعه شدت هوازدگی، از آزمونهای مقاومت کششی، سختی، رنگسنجی، تصاویر استریومیکروسکوپ و طیفسنجی FTIR استفاده شد. نتایج نشان داد که هوازدگی موجب تخریب فیزیکی و شیمیایی سطح نمونهها، تغییر رنگ و کاهش مقاومتهای کششی و سختی شده است. وجود نانو اکسید روی در ساختار چندسازه توانست تا حدودی از افت مقاومت کششی و سختی نمونهها و همچنین تخریب سطح آنها جلوگیری کند. درمجموع می‌توان گفت که استفاده از 2 درصد نانو اکسید روی عملکرد بهتری را در برابر هوازدگی نسبت به سایر مقادیر مورد استفاده در این تحقیق داشته است. | ||
| کلیدواژه‌ها | ||
| چندسازه چوب-پلیپروپیلن؛ هوازدگی؛ نانو اکسید روی | ||
| عنوان مقاله [English] | ||
| A study on the protective effect of nano zinc oxide against weathering of wood-polypropylene composite | ||
| نویسندگان [English] | ||
| Davood Rasouli1؛ Hossein Yousefi2؛ Mahdi Mashkour2 | ||
| 1Assistant Prof, Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| 2Associate Prof, Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. | ||
| چکیده [English] | ||
| In this research, the effect of using nano-zinc oxide (nano-ZnO) as a UV absorbent on the weathering resistance of wood- polypropylene composite was investigated. For this purpose, composite samples containing 0, 1, 2 and 3% nano-ZnO were manufactured using an internal mixer and a laboratory press. The prepared specimens were exposed to artificial weathering for 1480 hrs (in the periods of 0 ,480, 960 and 1480 hrs). The weathering degradation of specimens was monitored by tensile strength, hardness, colorimetry, Fourier transform infrared spectroscopy (FTIR), and, stereomicroscope tests. Results showed that weathering caused color changes, tensile strength and hardness loss, physical and chemical degradation on the surface of the samples. The use of nano-ZnO partially prevented tensile strength and hardness loss of samples as well as their surface degradation. In general, the use of 2% nano ZnO has been a better performance against weathering than other values. | ||
| کلیدواژه‌ها [English] | ||
| Wood-PP composite, Weathering, Nano-zinc oxide | ||
| مراجع | ||
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