Sokhandan Sorkhabi, T. (2014) Physical and mechanical properties of light weight wood base and poplar layer scrap in core layer. Masters thesis, University of Zabol.
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Abstract
Light weight wooden sandwich panels are widely used in the industry of furniture, doors, walls, wood artifacts and etc. Varese material could be used for production of light weight wooden panels which agricultural and industrial wood factories' waste are large group of them. But unfortunately tones of lingo- cellulosic materials are wasted without any appropriate use, since they can be used in production of low cast panels which can play an important role in decreasing the cost of final products. The purpose of this thesis is to study the effects of different combination ratio of Sunflower stalk waste and poplar layer in the middle section of panel and also the incorporation ratio of Melamine formaldehyde resin and Urea-formaldehyde as the resin in the structure of light weight wooden sandwich panel. For this purpose after production of panel, its physical and mechanical resistance evaluated according to the ASTM standards, and the statistical analysis performed in SPSS (v20) software using factorial test and classification of means with Duncan's multiple range test. The experiment results indicate that by increasing the combination ratio of Sunflower stalk waste and poplar, and the incorporation ratio of Melamine formaldehyde resin and Urea-formaldehyde, model of rapture, elasticity and rigidity, internal bonding and core shear has been increased significantly. And in the case of producing panel with pure poplar, the maximum mentioned resistance has been achieved. The results showed that increasing the proportion of poplar causes improving in the resistance of panel in holding screws and nails and also decrease the water absorption and thickness swelling in 2 and 24 hours. In the compression resistance test, independent effects of resin and contrast effects of resin and middle layer material has not been significantly effective.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Light weight sandwich panel, Sunflower stalk, poplar layer, waste material, Melamine formaldehyde |
| Subjects: | T Technology > TS Manufactures |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 06 Nov 2016 05:57 |
| Last Modified: | 06 Nov 2016 05:57 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/960 |
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