## Abstract The effective thermal conductivity (Ξ»~__e__~) and effective thermal diffusivity (Ο~__e__~) of oilβpalmβfiberβreinforced treated composites were measured simultaneously with the transient plane source technique from 50 to 110Β°C. The fibers of the composites were treated with sodium hydro
Effect of treatment on the thermal conductivity and thermal diffusivity of oil-palm-fiber-reinforced phenolformaldehyde composites
β Scribed by Richa Agrawal; N. S. Saxena; M. S. Sreekala; S. Thomas
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 156 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0887-6266
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β¦ Synopsis
The thermal conductivity and thermal diffusivity of oil-palm-fiber-reinforced untreated (Sample 1) and differently treated composites were measured with the transient plane source technique at room temperature and under normal pressure. All the composites were 40% oil-palm fiber by weight. The fibers were treated with alkali (Composite 2), silane (Composite 3), and acetic acid (Composite 4) and reinforced in a phenolformaldehyde matrix. The thermal conductivity and thermal diffusivity of the composites increased after treatment to different extents. The thermal conductivity of the treated fibers as well as of the untreated fibers was calculated theoretically. The model results show that the thermal conductivity of the untreated fiber was smaller than the thermal conductivity of the treated fibers.
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Thermal behavior of oil palm fiber-reinforced phenol-formaldehyde (PF) resins with different chemical treatments were analyzed using Differential Scanning Calorimeter (DSC). A well-defined peak of crystallization was observed in all the samples. However, in one of them a second exothermic peak also
## Abstract Glass fiber/epoxy composites were thermally conditioned at 50, 100, 150, 200, and 250Β°C for different periods of time and then immediately quenched directly in iceβcold water from each stage of conditioning temperature. The polymerization or depolymerization by thermal conditioning and