| تعداد نشریات | 282 |
| تعداد نشریات سازمان | 80 |
| تعداد شمارهها | 3,208 |
| تعداد مقالات | 35,560 |
| تعداد مشاهده مقاله | 53,005,323 |
| تعداد دریافت فایل اصل مقاله | 92,289,348 |
بررسی امکان ساخت تخته خرده چوب از ساقه شاهدانه | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 7، دوره 33، شماره 1 - شماره پیاپی 62، فروردین 1397، صفحه 63-75 اصل مقاله (841.36 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2018.120845.1463 | ||
| نویسنده | ||
| مسعود رضا حبیبی | ||
| استادیار پژوهش، بخش تحقیقات علوم چوب و فرآوردههای آن، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران | ||
| چکیده | ||
| هدف از این تحقیق، کاربرد ساقه شاهدانه در تولید تختهخرده چوب بوده است. لذا از ساقه شاهدانه و چوب اکالیپتوس با نسبتهای متفاوت شامل 100% و . % ، 50% ، 50% و 0 % و 100% و با استفاده از مقدار مصرف چسب 10 و 12 درصد (بر مبنای وزن خشک خرده چوب) و دو زمان پرس 3 و 4 دقیقه، اقدام به ساخت تختهخرده چوب گردید. ویژگیهای فیزیکی و مکانیکی تختهها شامل جذب آب و واکشیدگی ضخامت پس از 2 و 24 ساعت غوطهوری در آب، مقاومت چسبندگی داخلی تختهها، مقاومت خمشی و مدول الاستیسیته بر طبق استاندارد EN اندازهگیری و کلیه دادهها مورد تجزیه و تحلیل آماری قرار گرفتند. نتایج نشان داد که افزایش ذرات ساقه شاهدانه منجر به بهبود ویژگیهای خمشی (مدول الاستیسیته و مقاومت خمشی) تختهخرده چوب گردید. همچنین افزایش ذرات ساقه شاهدانه منجر به تضعیف مقاومت چسبندگی داخلی و خواص فیزیکی تختهخرده چوب (واکشیدگی ضخامت پس از 2 و 24 ساعت غوطهوری در آب شد. با افزایش زمان پرس، مدول الاستیسیته و واکشیدگی ضخامت پس از 24 ساعت غوطهوری در آب تختهخرده چوب بهبود یافت. با مقایسه خواص مکانیکی تختههای تولید شده با استاندارد ایران، مشخص گردید که با استفاده از ساقه شاهدانه به طور خالص و یا مخلوط، و زمان پرس 3 دقیقه و مقدار مصرف چسب 8 درصد، میتوان تختههای با ویژگی مکانیکی استاندارد تولید نمود، اگرچه ویژگیهای فیزیکی تختهها مقادیر استاندارد را تامین نکرد، که علت این امر عدم میتواند ناشی از عدم استفاده از عوامل محدود کننده جذب آب (پارافین) باشد. | ||
| کلیدواژهها | ||
| ساقه شاهدانه؛ اکالیپتوس؛ تخته خرده چوب؛ مقاومت خمشی؛ چسبندگی داخلی | ||
| عنوان مقاله [English] | ||
| Investigation the possibility of particleboard manufacturing using Hemp stalk | ||
| نویسندگان [English] | ||
| Masoudreza Habibi | ||
| Assistant Prof., Wood and Forest Products Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran | ||
| چکیده [English] | ||
| The purpose of this study was to use of Hemp stalks in particleboard production. Mixtures of Hemp stalk and Eucalyptus wood at the ratios of 0:100, 50:50, 100:0 were used. Also two resin content of 8 and 10% (based on oven dry particle) and 2 press times of 3 and 4 minutes were employed for the production of laboratory particleboard. Physical and mechanical properties including thickness swelling after 2 and 24 hours soaking in water, modulus of rapture, modulus of elasticity and internal bonding were measured data were statistically analyzed. It was observed that the increase in Hemp stalk particles in the mixture resulted in increasing of bending properties (bending strength and modulus of elasticity) and thickness swelling after 2 and 24 hours water soaking. Also the results showed that increase in Hemp stalk particles in the mixture resulted in reduction of internal bonding. As expected, physical and mechanical properties of particleboard improved with increasing resin content. Modulus of elasticity and thickness swelling after 24 hours water soaking were improved with increasing of press time. In general, comparing the produced board mechanical properties with standard of Iran requirements, the board produced using 100% and 50% Hemp stalk, 8% resin content and 3 minutes press time showed that optimal properties. Although the physical properties of the boards did not meet the standard values, the reason for this could not be due to the lack of use of paraffin. | ||
| کلیدواژهها [English] | ||
| Hemp stalk, Eucalyptus, Particleboard, Bending strength, Internal bonding | ||
| مراجع | ||
|
- Doosthoseini, K., 2001. Wood Composite Materials Manufacturing, Applications. Tehran university press, 648p. - Dziurka, D., Mirski, R. and Łęcka, J., 2005. Properties of boards manufactured from rape straw depending on the type of the binding agent. Cellulose, 37: 54-09. - Dziurka, D., Mirski, R. and Łęcka, J., 2010. Rape straw as a substitute of chips in core layers of particleboards resinated with PMDI. Electronic Journal of Polish Agricultural Universities, 13(4). - Emam, M., 1997. The effect of mat and press conditions on the heat transfer. MSc. Thesis. wood and paper faculty. Natural resources and agriculture science Gorgan university. 127p. - EN 310. 1993. Wood based panels, determination of modulus of elasticity in bending and bending strength. European Standardization Committee. Brussells. - EN 317. 1993. Particle boards and fiber boards, determination of swelling in thickness after immersion. European Standardization Committee. Brussells. - EN 319. 1993. Particle boards and fiber boards, determination of tensile strength perpendicular to plane of the board. European Standardization Committee. Brussells. - EN 326-1. 1993. Wood based panels, Sampling, cutting and inspection. Sampling and cutting of test pieces and expression of the test results. European Standardization Committee. Brussells - Guler, C., Bektas, I. and Kalaycioglu, H., 2006. The experimental particleboard manufacture from sunflower stalks (Helianthus annuus L.) and Calabrian pine (Pinus brutia Ten.). Forest Products Journal. 56(4): 56-60. - Habibi, M., Hosseinkhani, H., Mahdavi, S. and Sepidehdam, J., 2011. Effect of wood species on particleboard properties, Iranian Journal of Wood and Paper Science Research. 26(1): 58-71. - Habibi, M., Hosseinkhani, H. and Mahdavi, S., 2012. The potential of Mesquite wood in particleboard production. Iranian Journalof Wood and Paper Science Research. 27(1): 51-67. - Habibi, M., Hosseinkhani, H., Mahdavi, S. and Rezanejad, A., 2013. Utilization of Hemp straw in particleboard industry. Final research project report. Research Division of Wood Science and Forest Products. Research Institute of Forests and Rangelads, 62p. - Habibi, M. and Mahdavi, S., 2016. The effect of wood and nonwood materials mixing ratio on physical properties and internal bond of particleboard. Knowledge and Innovation Conference on Wood and Paper Industry with Environmental Considerations. Faculty of natural resource. Karaj-Iran:1-6. - Kalaycıoglu, H. and Nemli, G., 2006. Producing composite particleboard from kenaf (Hibiscus cannabinus L.) stalks. Industrial crops and products, 24(2): 177-180. - Kamrani, A., yadolahi, s., Kamrani, M., Saraeyan, A. and Lotfi, F., 2016. Investigating the possibility of using rice husk in the particleboard industry. Journal of Renewable Natural Resources Research. 21(1): 95-104. - Guntekin, E., Uner, B., Sahin, H. T. and Karakus, B., 2008. Pepper stalks (Capsicum annuum) as raw material for particleboard manufacturing. Journal of Applied Sciences. 8(12): 2333-2336. - Li, X., Cai, Z., Winandy, J. E. and Basta, A.H., 2010. Selected properties of particleboard panels manufactured from rice straws of different geometries. Bioresource Technology, 101(12): 4662-4666. - Maloney, T. M. 1993. Modern particle board and dry-process fiber board manufacturing, Miller Freeman Publications, San Francisco, CA. - Mirski, R., Boruszewski, P., Trociński, A., and Dziurka, D., 2017. The Possibility to Use Long Fibres from Fast Growing Hemp (Cannabis sativa L.) for the Production of Boards for the Building and Furniture Industry. BioResources, 12(2): 3521-3529. - Nikvash, N., Kraft, R., Kharazipour, A. and Euring, M., 2010. Comparative properties of bagasse, canola and hemp particle boards. European Journal of Wood and Wood Products, 68(3): 323-327. - Rassam, G., Azadifard, M., Kargarfard, A. and Fazeli, F., 2014. Investigation the possibility of particleboard manufacture using corn stalks. , Iranian Journal of Wood and Paper Science Research. 28(4): 609-623. - Shamsi, S. and Vatani, L., 2016. The requirements of wood and paper industry to wood supply and raw material according to applying changes on forest harvesting. Knowledge and Innovation Conference on Wood and Paper Industry with Environmental Considerations. Faculty of natural resource. Karaj-Iran, 1-9. - Suchland. O. and Xu, H., 1989. A simulation of the horizontal density distribution in a flake board. Forest Product Journal. 39(5): 29-33. | ||
|
آمار تعداد مشاهده مقاله: 813 تعداد دریافت فایل اصل مقاله: 550 |
||