The effect of some technological production variables on mechanical and physical properties of particleboard manufactured from cotton (Gossypium hirsutum) stalks
| Autor: | Zahra Beyki, Rahiim Mohebbi Gargarii, Morteza Nazerian, Farhad Kool |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Absorption (acoustics)
Materials science Absorption of water 020209 energy Materials Science (miscellaneous) press closing speed Manufactures Young's modulus 02 engineering and technology Bending mechanical properties TS1-2301 Industrial and Manufacturing Engineering particleboard physical properties symbols.namesake chemistry.chemical_compound Flexural strength lcsh:Manufactures 0202 electrical engineering electronic engineering information engineering medicine Chemical Engineering (miscellaneous) Cotton stalks lcsh:Forestry cotton stalks Composite material 040101 forestry Pressing density Urea-formaldehyde Forestry 04 agricultural and veterinary sciences SD1-669.5 chemistry symbols lcsh:SD1-669.5 0401 agriculture forestry and fisheries Swelling medicine.symptom lcsh:TS1-2301 |
| Zdroj: | Maderas. Ciencia y tecnología, Volume: 18, Issue: 1, Pages: 167-178, Published: 2015 Maderas: Ciencia y Tecnología, Vol 18, Iss 1, Pp 167-178 (2016) Maderas. Ciencia y tecnología v.18 n.1 2016 SciELO Chile CONICYT Chile instacron:CONICYT |
| Popis: | The current study aims to improve properties of particleboard manufactured from cotton (Gossium hirsutum) stalks glued with urea formaldehyde. To this aim, panel density (at three levels: 0,5; 0,65 and 0,8 g/cm³), press temperature (at two levels: 150 and 180°C) and press closing speed (at two levels: 4 and 8 mm/s) were selected as independent variables. The mechanical properties consist of modulus of rupture, modulus of elasticity and internal bonding and physical behaviors such as water absorption and thickness swelling of panels were determined. Results showed that with increasing the density of panels and press temperature modulus of rupture, modulus of elasticity and internal bonding of panels increased, while bending strengths of panels were differently affected by press closing speed compared to the internal bonding, so that with increasing the press closing speed modulus of rupture increased, but internal bonding decreased. Moreover, increasing panel density and press temperature, water absorption and thickness swelling of panels decreased. The press closing speed affected the water absorption and thickness swelling, insignificantly. |
| Databáze: | OpenAIRE |
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