12 Physical and mechanical properties of Acacia mangium plywood after sanding treatment
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I. Palle
Abstract
The purpose of this studywas to evaluate the effect of sanding treatment on Acacia mangium plywood panel properties. Three layered A. mangium plywood panels were produced from sanded veneer using three different grit sizes: S180, S240 and S320, from medium to ultrafine respectively, with one non-sanded panel as control. Melamine urea formaldehyde resin was unvaryingly used as binder. The outturn of the sanding treatment was observed through a set of evaluations which includes the contact angle test for surface properties, shear strength and static bending for the mechanical properties, and thickness swelling and water absorption rate for the physical properties and dimensional stability. The study shows that almost all of the properties exhibit significant differences at p ≤ 0.05 except for the density and shear test. From the results, the modulus of elasticity of plywood decreases with the increase of grit sizes but shows no significant difference with the control and S240 samples. The S180 samples notably shows an impressive mechanical property with the highest modulus of rupture, albeit the lowest dimensional stability. Nonetheless, the result of this study indicated that the sanding treatment shows a notable increase in the physical, mechanical and dimensional stability of the panel, with the S180 medium grit proving to be adequate and best in improving the plywood panels. As excessive smoothness may negatively affect the wettability itself due to the production of uneven surface and the development of loose fiber that compromises the adherence of the MUF and veneer, the higher grits negatively impacted its treatment on the surface.
Abstract
The purpose of this studywas to evaluate the effect of sanding treatment on Acacia mangium plywood panel properties. Three layered A. mangium plywood panels were produced from sanded veneer using three different grit sizes: S180, S240 and S320, from medium to ultrafine respectively, with one non-sanded panel as control. Melamine urea formaldehyde resin was unvaryingly used as binder. The outturn of the sanding treatment was observed through a set of evaluations which includes the contact angle test for surface properties, shear strength and static bending for the mechanical properties, and thickness swelling and water absorption rate for the physical properties and dimensional stability. The study shows that almost all of the properties exhibit significant differences at p ≤ 0.05 except for the density and shear test. From the results, the modulus of elasticity of plywood decreases with the increase of grit sizes but shows no significant difference with the control and S240 samples. The S180 samples notably shows an impressive mechanical property with the highest modulus of rupture, albeit the lowest dimensional stability. Nonetheless, the result of this study indicated that the sanding treatment shows a notable increase in the physical, mechanical and dimensional stability of the panel, with the S180 medium grit proving to be adequate and best in improving the plywood panels. As excessive smoothness may negatively affect the wettability itself due to the production of uneven surface and the development of loose fiber that compromises the adherence of the MUF and veneer, the higher grits negatively impacted its treatment on the surface.
Chapters in this book
- Frontmatter I
- About the editors V
- Preface IX
- Contents XI
- List of contributing authors XIX
- 1 Polybutylene succinate (PBS)/natural fiber green composites: melt blending processes and tensile properties 1
- 2 Material selection and conceptual design in natural fibre composites 15
- 3 Amine compounds post-treatment on formaldehyde emission and properties of urea formaldehyde bonded particleboard 27
- 4 Manufacturing defects of woven natural fibre thermoset composites 39
- 5 Manufacturing defects and interfacial adhesion of Arenga Pinnata and kenaf fibre reinforced fibreglass/kevlar hybrid composite in boat construction application 57
- 6 Wettability of keruing (Dipterocarpus spp.) wood after weathering under tropical climate 67
- 7 Mechanical performance and failure characteristics of cross laminated timber (CLT) manufactured from tropical hardwoods species 77
- 8 Constructing a framework for selecting natural fibres as reinforcements composites based on grey relational analysis 87
- 9 Thermal properties of wood flour reinforced polyamide 6 biocomposites by twin screw extrusion 99
- 10 Characterization of lignocellulosic S. persica fibre and its composites: a review 111
- 11 An overview of mechanical and corrosion properties of aluminium matrix composites reinforced with plant based natural fibres 131
- 12 Physical and mechanical properties of Acacia mangium plywood after sanding treatment 161
- 13 Effect of sugarcane bagasse on thermal and mechanical properties of thermoplastic cassava starch/beeswax composites 171
- 14 The properties of 3D printed poly (lactic acid) (PLA)/poly (butylene-adipate-terephthalate) (PBAT) blend and oil palm empty fruit bunch (EFB) reinforced PLA/PBAT composites used in fused deposition modelling (FDM) 3D printing 187
- 15 Properties of plybamboo manufactured from two Malaysian bamboo species— 205
- 16 Fundamental study of commercial polylactic acid and coconut fiber/polylactic acid filaments for 3D printing 215
- 17 Flexural analysis of hemp, kenaf and glass fibre-reinforced polyester resin 231
- 18 Effect of stacking sequence on tensile properties of glass, hemp and kenaf hybrid composites 247
- 19 Investigation on impact properties of different type of fibre form: hybrid hemp/ glass and kenaf/glass composites 259
- Index 277
Chapters in this book
- Frontmatter I
- About the editors V
- Preface IX
- Contents XI
- List of contributing authors XIX
- 1 Polybutylene succinate (PBS)/natural fiber green composites: melt blending processes and tensile properties 1
- 2 Material selection and conceptual design in natural fibre composites 15
- 3 Amine compounds post-treatment on formaldehyde emission and properties of urea formaldehyde bonded particleboard 27
- 4 Manufacturing defects of woven natural fibre thermoset composites 39
- 5 Manufacturing defects and interfacial adhesion of Arenga Pinnata and kenaf fibre reinforced fibreglass/kevlar hybrid composite in boat construction application 57
- 6 Wettability of keruing (Dipterocarpus spp.) wood after weathering under tropical climate 67
- 7 Mechanical performance and failure characteristics of cross laminated timber (CLT) manufactured from tropical hardwoods species 77
- 8 Constructing a framework for selecting natural fibres as reinforcements composites based on grey relational analysis 87
- 9 Thermal properties of wood flour reinforced polyamide 6 biocomposites by twin screw extrusion 99
- 10 Characterization of lignocellulosic S. persica fibre and its composites: a review 111
- 11 An overview of mechanical and corrosion properties of aluminium matrix composites reinforced with plant based natural fibres 131
- 12 Physical and mechanical properties of Acacia mangium plywood after sanding treatment 161
- 13 Effect of sugarcane bagasse on thermal and mechanical properties of thermoplastic cassava starch/beeswax composites 171
- 14 The properties of 3D printed poly (lactic acid) (PLA)/poly (butylene-adipate-terephthalate) (PBAT) blend and oil palm empty fruit bunch (EFB) reinforced PLA/PBAT composites used in fused deposition modelling (FDM) 3D printing 187
- 15 Properties of plybamboo manufactured from two Malaysian bamboo species— 205
- 16 Fundamental study of commercial polylactic acid and coconut fiber/polylactic acid filaments for 3D printing 215
- 17 Flexural analysis of hemp, kenaf and glass fibre-reinforced polyester resin 231
- 18 Effect of stacking sequence on tensile properties of glass, hemp and kenaf hybrid composites 247
- 19 Investigation on impact properties of different type of fibre form: hybrid hemp/ glass and kenaf/glass composites 259
- Index 277
