The process of wood plasticization and densification has been known for decades. It is used for improvement of mechanical properties of low density wood. The objective of this study is to compare two different methods of wood plasticization. Specimens made of European beech wood (Fagus sylvatica) were plasticized by hot steam or gaseous ammonia and then compressed in tangential direction. Stress-strain behaviour during compression was evaluated. In this study influence of growth ring angle on densification process was also investigated. Gaseous ammonia at a pressure of 0.2 MPa was less efficient than hot steam. The best plasticizing effect was reached by combining these two methods. A growth ring angle of 15° from direction of compression (almost tangential) was evaluated as the best for densification of European beech wood.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:190756 |
| Date | January 2015 |
| Creators | Rousek, Radim |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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