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بررسی رنگپذیری چوب تیمار حرارتی شده | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 15، دوره 30، شماره 4 - شماره پیاپی 53، دی 1394، صفحه 717-727 اصل مقاله (316.27 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2015.101475 | ||
| نویسندگان | ||
| عبدا... زمانی* 1؛ محمد رضا ماستری فراهانی2 | ||
| 1دانشآموخته کارشناسی ارشد، دانشکده مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، تهران | ||
| 2دانشیار، عضو هیئتعلمی، دانشکده مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| چکیده | ||
| در این تحقیق اثر تیمار حرارتی با روغن کلزا بر عملکرد پوششهای رزین شفاف، آلکیدیمات، سلولزی نیمهشفاف، و آکریلیک مات بر روی صنوبر دلتوئیدس در محیط بیرونی (هوازدگی طبیعی) مورد بررسی واقع شد. برای این منظور نمونههایی بدون عیب از برون چوب صنوبر دلتوئیدس با ابعاد 50×50×2 میلیمتر (طولی× مماسی× شعاعی) تهیه گردید. نمونههای آزمایشی با روغن کلزا در درجه حرارت-های 180، 200، 220 درجه سانتیگراد و در مدت زمان 4 ساعت تیمار شدند. پوششها با ضخامت 150 میکرومتر (ضخامت تر) توسط دستگاه لایه کش بر روی نمونههای آزمونی اعمال گردیدند. میزان چسبندگی پوششها بر طبق استانداردASTM D 4541 و خصوصیات رنگ نمونهها بر طبق استاندارد ASTM D 2244 قبل و بعد از 180 روز قرار گرفتن در معرض هوازدگی طبیعی اندازهگیری شدند. تجزیه و تحلیلهای آماری نتایج آزمون تغییر رنگ نشان دادند که اثر تیمار حرارتی بر روی تغییر رنگ وابسته به نوع پوشش میباشد. همچنین چسبندگی رنگ وابسته به ترکیبی از نوع پوشش، تیمار حرارتی در روغن و هوازدگی میباشد. | ||
| کلیدواژهها | ||
| تیمار حرارتی؛ روغن کلزا؛ صنوبر دلتوئیدس؛ چسبندگی؛ هوازدگی | ||
| عنوان مقاله [English] | ||
| An investigation on paintability of heat treated wood | ||
| نویسندگان [English] | ||
| abdollah zamnai1؛ Mohammad reza Mastari farahani2 | ||
| چکیده [English] | ||
| In this research, the effect of oil heat-treated on the outdoor performance of coatings namely, transparent resin stain, alkydi paint, semi- transparent cellulosic stian, acrylic paint coated on eastern cotton wood was investigated. For this purpose, sound specimens with the dimensions of 50×50×2 mm (Longitudinal × tangential × radial) were prepared from sapwood. Test samples were treated with canola oil at temperatures of 180, 200 and 220 ° C for 4 hours. The coatings were the wet film thickness of 150µm were applied on the specimens using an applicator. The coating adhesion was measured according to ASTM D 4541 standard, and the color characteristics of the coating were measured according to ASTM D 2244 before and after a natural weathering for 180 days. The statistical analysis of the color change data showed that the effect of the oil heat-treatment on the color change depended on coating type. The statistical analysis of the adhesion strength data showed that the adhesion strength depended on the combination of weathering, oil heat-treatment and coating type. | ||
| کلیدواژهها [English] | ||
| heat-treate, Canola oil, populous deltoids, Adhesion, weathering | ||
| مراجع | ||
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