Study of mechanical and sound insulation properties of oil palm based fiber boards
In this project, oil palm fibers/mats(OPF) are used for the development of composite boards. Initially, the fibers are pretreated with an aqueous alkaline solution and non-halogenated flame retardants before impregnating with organic/inorganic binders to improve the fire performance. The surface mod...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis-Master by Coursework |
| Language: | English |
| Published: |
Nanyang Technological University
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/137337 |
| _version_ | 1811695143054475264 |
|---|---|
| author | Xmas, Jasmine |
| author2 | Aravind Dasari |
| author_facet | Aravind Dasari Xmas, Jasmine |
| author_sort | Xmas, Jasmine |
| collection | NTU |
| description | In this project, oil palm fibers/mats(OPF) are used for the development of composite boards. Initially, the fibers are pretreated with an aqueous alkaline solution and non-halogenated flame retardants before impregnating with organic/inorganic binders to improve the fire performance. The surface modification of the fiber is accomplished through mercerization and timbor(disodium octaborate tetrahydrate) treatment. Fly ash was also explored as an additive in the boards. This work focuses on investigating the mechanical, water susceptibility and sound absorption properties of two variants of OPF boards with differing compositions. It was shown that with high loading of fly ash, the flexural properties of the boards are unaffected even after immersing the boards in warm water(~60oC) containing excess lime for 56 days. This test was carried out according to ASTM C1185.
Moreover, the impact strength of these boards(with higher content of fly ash) are prominent and can absorb 39% more energy compared to those boards with less loading of fly ash. Crack propagation studies were also carried out to understand the failure mechanisms. Despite the differences in mechanical properties, acoustic properties(sound absorption) of both the board variants have shown good sound absorption with absorption coefficient values of up to 0.82 at lower frequencies. Finally, the results are compared with the other commercially available refractory-based boards, such as gypsum and magnesia. |
| first_indexed | 2024-10-01T07:18:47Z |
| format | Thesis-Master by Coursework |
| id | ntu-10356/137337 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:18:47Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1373372023-03-11T17:43:50Z Study of mechanical and sound insulation properties of oil palm based fiber boards Xmas, Jasmine Aravind Dasari School of Mechanical and Aerospace Engineering aravind@ntu.edu.sg Engineering::Materials::Composite materials In this project, oil palm fibers/mats(OPF) are used for the development of composite boards. Initially, the fibers are pretreated with an aqueous alkaline solution and non-halogenated flame retardants before impregnating with organic/inorganic binders to improve the fire performance. The surface modification of the fiber is accomplished through mercerization and timbor(disodium octaborate tetrahydrate) treatment. Fly ash was also explored as an additive in the boards. This work focuses on investigating the mechanical, water susceptibility and sound absorption properties of two variants of OPF boards with differing compositions. It was shown that with high loading of fly ash, the flexural properties of the boards are unaffected even after immersing the boards in warm water(~60oC) containing excess lime for 56 days. This test was carried out according to ASTM C1185. Moreover, the impact strength of these boards(with higher content of fly ash) are prominent and can absorb 39% more energy compared to those boards with less loading of fly ash. Crack propagation studies were also carried out to understand the failure mechanisms. Despite the differences in mechanical properties, acoustic properties(sound absorption) of both the board variants have shown good sound absorption with absorption coefficient values of up to 0.82 at lower frequencies. Finally, the results are compared with the other commercially available refractory-based boards, such as gypsum and magnesia. Master of Science (Aerospace Engineering) 2020-03-18T04:46:26Z 2020-03-18T04:46:26Z 2019 Thesis-Master by Coursework https://hdl.handle.net/10356/137337 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials::Composite materials Xmas, Jasmine Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title | Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title_full | Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title_fullStr | Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title_full_unstemmed | Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title_short | Study of mechanical and sound insulation properties of oil palm based fiber boards |
| title_sort | study of mechanical and sound insulation properties of oil palm based fiber boards |
| topic | Engineering::Materials::Composite materials |
| url | https://hdl.handle.net/10356/137337 |
| work_keys_str_mv | AT xmasjasmine studyofmechanicalandsoundinsulationpropertiesofoilpalmbasedfiberboards |