Tay, Chen Chiang (2018) Physical, Mechanical and Thermal Properties of Sago Fiber Reinforced Composite Particleboard. PhD thesis, Universiti Malaysia Sarawak (UNIMAS).
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Abstract
In this research, sago particles with adhesive of low emission Urea Formaldehyde (UF) resin with 51.6% solid content are the main focus. The optimum performance of sago urea formaldehyde composite particleboard is determined. The fabrication process is based on JIS A 5908 standard. Sago residues have chemical reactivity with the matrix such as UF or phenol formaldehyde (PF) due to the lignocellulose composition.They are able to be hot-pressed into particleboard. The feasibility of hybrid particleboard made from sago mixed with waste wood was investigated. The processing and material parameters for an optimized board were identified based on the right particle size, weight fraction, density, matrix and hybrid while the effect of parameter was investigated through mechanical, physical and thermal analysis. The results showed composite particleboard with 800 kg/m3 exhibited the optimum strength. The optimul mechanical properties were achieved at 80wt% of sago particles with particles size 1.18mm. Hybrid composite particleboard fabricated with ratio sago 25wt% and waste wood 75wt% able to improve the mechanical and physical propertie. The board performance was determined by the strength of the material, chemical bonding and its density. The interaction between particles depends on the particle and matrix bonding. The structure of the sago particleboard depends on the particle size, packing and the relative ratio. The sago particleboard met the requirement for ANSI A208.1-2009 as the door core, industrial and commercial purpose. The percentage of water absorption and thickness swelling increased with the weight fraction of particles. Composite particleboard made by PF has higher water absorption and thickness swelling compared with composite particleboard made by UF. The percentage of thickness swelling and water absorption can be reduced by impregnating higher loading of UF and PF. Sago UF/PF composite particleboard decomposed in single stage decomposition. The first step of decomposition is determination of moisture content while the second step is dehydration reaction on the polymer chain and final step is residues conversion to carbon.
| Item Type: | Thesis (PhD) |
|---|---|
| Additional Information: | Thesis Ph.D. -- Universiti Malaysia Sarawak, 2018. |
| Uncontrolled Keywords: | Sago composite particleboard, urea formaldehyde, physical and mechanical properties, thermal analysis, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, Postgraduate, research, Universiti Malaysia Sarawak. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Engineering Faculties, Institutes, Centres > Faculty of Engineering |
| Depositing User: | Gani |
| Date Deposited: | 27 Aug 2019 06:48 |
| Last Modified: | 17 Oct 2023 03:02 |
| URI: | http://ir.unimas.my/id/eprint/26582 |
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