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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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-Ayadi, N., Lejeune, F., Charrier, F., Charrier, B. and Merlin, A., 2003. Colour stability of heat treated wood during artificial weathering. Holz Roh-Werkst, 61: 221-226. -ASTM D., 2244 – 07 e1, Standard practice for calculation of color tolerances and color differences from instrumentally measured color coordinates, American Society for Testing and Materials. USA. -ASTM, D. 4541. Standard Test Method for Pull Off Sterngh of Coating Using Portable Adhesion Testers. -Aydemir, D., Gunduz, G., Altuntas, E., Ertas, M., Sahin, H.T. and Alma, M.H., 2011. Investigating changes in the chemical constituents and dimensional stability of heat-treated hornbeam and uludag fir wood. Bio. Resources, 6: 2. 1308-1321. -Baziar, B., Parsapajoh, D., Khademy eslam, H.A. and Hamasi, S.A.H., 2007. Investigation physical properties of Poplar wood treated with hot linseed oil. Sci. Agric. J. 13: 1. 197-206. -Bulian, F., and Graystone, J.A., 2009. Wood coatings-theory and practice. Published by Elsevier B.V. 320p. -Deka, M., Humar, M., Rep, G., Kricej Sentjurc, M. and Petric, M., 2008. Effects of UV light irradiation on colour stability of thermally modified, copper ethanolamine treated and non-modified wood : EPR and DRIFT spectroscopic studies. Wood Sci. Technol. 42: 5-20. -Dahmardeh-Ghalehno, M. and Nazerian, M., 2011. Changes in the Physical and Mechanical Properties of Iranian Hornbeam Wood. (carpinus betulus) with Heat Treatment, Europ. J. Sci. Res. 51: 4. 490-498. -Ekhtera, M.H., Portahmasbi, K. and Karimi, A.N., 2009. Identifying wood- Accurate results with simple tools. Aeeizh Press, 248p. (In Persian) -Feist, W.C. and Hon, D.N.S., 1984. Chemistry of weathering and protection. In: The chemistry of solid wood. Ed. R.M. Rowell. Advancees in chemistry series, no. 207.amirican chemical society, Washington, DC. Pp: 401-405. -Fojutowski, A. N. Kropacz, and Noskowiak, A. J., 2011. The susceptibility of poplar and alder wood to mould fungi attack. Annals of Warsaw University of Life Sciences–SGGW Forestry and Wood Technology 74 2011: 56-62. -Forsythe, P., 2007. Improving Timber cladding For builders and designers. Forest and wood Products Research and Development Corporation, report PN06.1027, Melbourne, Australia. -Ghosh, S.C., Militiz, H. and Mai, C., 2009. Natural weathering of Scots pine (phnus sylvestris L) boards modified with functionalized connercial silicone emulsion, bioresources, 4: 2. 659-673. -Hill, C.A.S., 2006. Wood modification: thermal, chemical and other processes. John Whiley and sons. Ltd. chichester, London, 240p. -Hon, D.N.S., 1981. Photochemcial degradation of lignocellulosic materials, Developments, in Polymer Degradation, N. Grassie (ed.), Appl. Sci. Publ. London, Pp: 229-281. -Jimenez, J.P.Jr., Acda, M.N., Razal, R.A. and Madamba, P.S., 2011. Physico- Mechanical properties and durability of thermally modified malapapaya [polyscias nodosa (blume) seem.] wood. Philippine J. Sci. 140: 1. 13-23. -Militz, H. and Altgen, M., 2014. Processes and Properties of Thermally Modified Wood Manufactured in Europe. American Chemical SocietyIn Deterioration and Protection of Sustainable Biomaterials; Schultz, T., et al.;ACS Symposium Series; American Chemical Society: Washington, DC, 2014. -Moradi. S., 2013, Investigating the effect of nano- zinc oxide treatment on paintability of poplar wood A thesis fulfillment of M.Sc. of College of wood and paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources. -Mehri. S., 2012. Effect of heat treatment on the decay resistance ,A thesis fulfillment of M.Sc. of College of wood and paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources. -Mirshokraei, S.A., 2003. Wood chemistry. Aeeizh Press, 248p. (In Persian) -Nejad, M., Shafaghi, R., Ali, H., and Cooper, P., 2013. Coating performance on oil-heat treated wood for flooring. Bioresources. 8(2): 1881-1892. -Ozcifici, A., Ozpak, A. and Sertan, A., 2008. Impacts of impregnation solutions on the adhesion strength of outer usage varnish coating, Construction and building Materials, 22(4): 513-520. -Podgorski, L., Grull, G., Truskaller, M., Lanvin, J.D., Gerorges, V. and Bollmus, s., 2010. Wet and dry adhesion of coatings on modified and unmodified wood. Conference Biarrits, france. IRG/WP 10- 40524. -Rapp, A.O. and Sailer, M., 2001. Oil heat treatment of wood in Germany-State of the art. In: Review on heat treatments of wood. COST Action E22, Environmental optimisation of wood protection. Proceedings of the special seminar held in Antibes, Forestry and Forestry Products, France, 66p. -Richardson, B.A., 1993. Wood preservation. London, UK: E& FN Spon. -Rowell, R.M., 2005. Handbook of wood chemistry and wood composites. CRC Press. Boca Raton, Londen, Pp: 142-144. -Shahrani. H., 2012. Investigating the effect of nano copper oxide treatment on paintability of poplar wood A thesis fulfillment of M.Sc. of College of wood and paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources. -Tamiz, A., Trezive, N., Eillkenes, M. and Hafren, J., 2007. Effect of accelerated weathering on surface chemistry of modified wood“. Appl. Surf. Sci. 253: 5355-5362. -Tuong, V.M. and Li, J., 2010. Effect of heat treatment on the change in color and dimensional stability of acacia hybrid wood. Bio. Resources, 5: 2. 1257-1267. -White, J. R. 2006. Polymer ageing: physics, chemistry or engineering? Time to reflect. C. R. Chim. 9(11): 1396-1408. -Williams, R.S., Winandy, J.E. and Feist, W.C., 1987. Adhesion of paint to weathered wood, Forest products Journal. 37(11/12): 291-300. | ||
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